110 results on '"Hisashi Matsubara"'
Search Results
2. Effects of angle of incidence of stimulus light on photopic electroretinograms of zebrafish larvae
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Hisashi Matsubara, Shinichiro Chujo, Yoko Mase, Yukiko Muramoto, Kumiko Kato, and Mineo Kondo
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Zebrafish ,Electroretinography ,ERG ,Light stimulation ,Fiber optical cable ,Full-field stimulation ,Medicine ,Science - Abstract
Abstract In electroretinographic (ERG) recordings of zebrafish, the light stimulus is usually delivered by a fiber optic cable. The purpose of this study was to determine whether the angle of incidence of the stimulus light from the fiber optic cable will affect the amplitudes and implicit times of the ERGs of zebrafish larvae. The larvae were positioned on their side with the right eye pointed upward. The light stimuli were delivered by a fiber optic cable from three directions of the larvae: frontal 0° (F0°), dorsal 30°(D30°), and ventral 30°(V30°). Photopic ERGs were recorded from 16 larvae at age 5–6 days post-fertilization. Our results showed that the mean amplitude of the b-wave elicited at D30° and V30° stimulation was significantly smaller than that elicited at F0° stimulation (P = 0.014 and P = 0.019, respectively). In addition, the mean amplitude of the d-wave elicited at D30° and V30° stimulation was significantly smaller than that elicited at F0° stimulation (P
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- 2024
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3. Predicting postoperative visual acuity in epiretinal membrane patients and visualization of the contribution of explanatory variables in a machine learning model.
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Akiko Irie-Ota, Yoshitsugu Matsui, Koki Imai, Yoko Mase, Keiichiro Konno, Taku Sasaki, Shinichiro Chujo, Hisashi Matsubara, Hiroharu Kawanaka, and Mineo Kondo
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Medicine ,Science - Abstract
BackgroundThe purpose of this study was to develop a model that can predict the postoperative visual acuity in eyes that had undergone vitrectomy for an epiretinal membrane (ERM). The Light Gradient Boosting Machine (LightGBM) was used to evaluate the accuracy of the prediction and the contribution of the explanatory variables. Two models were designed to predict the postoperative visual acuity in 67 ERM patients. Model 1 used the age, sex, affected eye, axial length, preoperative visual acuity, Govetto's classification stage, and OCT-derived vector information as features to predict the visual acuity at 1, 3, and 6 months postoperatively. Model 2 incorporated the early postoperative visual acuity as an additional variable to predict the visual acuity at 3, and 6 months postoperatively. LightGBM with 100 iterations of 5-fold cross-validation was used to tune the hyperparameters and train the model. This involved addressing multicollinearity and selecting the explanatory variables. The generalized performance of these models was evaluated using the root mean squared error (RMSE) in a 5-fold cross-validation, and the contributions of the explanatory variables were visualized using the average Shapley Additive exPlanations (SHAP) values.ResultsThe RMSEs for the predicted visual acuity of Model 1 were 0.14 ± 0.02 logMAR units at 1 month, 0.12 ± 0.03 logMAR units at 3 months, and 0.13 ± 0.04 logMAR units at 6 months. High SHAP values were observed for the preoperative visual acuity and the ectopic inner foveal layer (EIFL) area with significant and positive correlations across all models. Model 2 that incorporated the postoperative visual acuity was used to predict the visual acuity at 3 and 6 months, and it had superior accuracy with RMSEs of 0.10 ± 0.02 logMAR units at 3 months and 0.10 ± 0.04 logMAR units at 6 months. High SHAP values were observed for the postoperative visual acuity in Model 2.ConclusionPredicting the postoperative visual acuity in ERM patients is possible using the preoperative clinical data and OCT images with LightGBM. The contribution of the explanatory variables can be visualized using the SHAP values, and the accuracy of the prediction models improved when the postoperative visual acuity is included as an explanatory variable. Our data-driven machine learning models reveal that preoperative visual acuity and the size of the EIFL significantly influence postoperative visual acuity. Early intervention may be crucial for achieving favorable visual outcomes in eyes with an ERM.
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- 2024
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4. Case of Repeated Full-Thickness Macular Hole Formations and Spontaneous Closure following Intravitreal Bevacizumab Treatment for Central Retinal Vein Occlusion
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Rika Furukawa, Hisashi Matsubara, Eriko Uchiyama, Masahiko Sugimoto, and Mineo Kondo
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central retinal vein occlusion ,macular hole ,spontaneous closure ,intravitreal injection ,Ophthalmology ,RE1-994 - Abstract
The development of a full-thickness macular hole (FTMH) is a rare complication of intravitreal injections, and only a small subset of eyes with an FTMH has a spontaneous closure. We report a case of repeated FTMH formations and a spontaneous closure following an intravitreal injection of bevacizumab (IVB) for a central retinal vein occlusion (CRVO). A 39-year-old male patient presented with reduced vision in his right eye and was diagnosed with a CRVO. Two months later, neovascular glaucoma and macular edema (ME) developed and IVB was performed. After 2 weeks, optical coherence tomography revealed an improvement of the ME and the formation of an FTMH with a hyperreflective material in the FTMH. Two months later, there was a recurrence of the ME and a closure of the FTMH, but the hyperreflective material was still present in the retina. Then, another IVB and panretinal photocoagulation were performed. One month later, the ME had improved and the FTMH was closed, but the hyperreflective material was still present in the retina. After another 2 months, the ME recurred and a third IVB was performed. The ME improved without a recurrence of an FTMH. After that, there were no recurrences of the ME, but the FTMH recurred with the progression of a posterior vitreous detachment and development of an epiretinal membrane 1 year after the third IVB. We suggest that an FTMH be included as a complication of intravitreal injections, and it may close spontaneously during the course of the primary disease.
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- 2022
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5. Transient Increase of Flicker Electroretinography Amplitudes after Cataract Surgery
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Kumiko Kato, MD, PhD, Ryunosuke Nagashima, Hisashi Matsubara, MD, PhD, Kengo Ikesugi, MD, PhD, Hideyuki Tsukitome, MD, PhD, Yoshitsugu Matsui, MD, PhD, Takayasu Nunome, MD, Masahiko Sugimoto, MD, PhD, Daphne L. McCulloch, OD, PhD, and Mineo Kondo, MD, PhD
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Aqueous flare value ,Cataract surgery ,Central macular thickness ,Electroretinography ,Inflammation ,Ophthalmology ,RE1-994 - Abstract
Purpose: To determine the characteristics and cause of the increase in the amplitude of flicker electroretinography (ERG) after cataract surgery. Design: Prospective, observational clinical study. Participants: Thirty patients who underwent cataract surgery. Methods: Flicker ERGs were recorded with the RETeval system without mydriasis. The central macular thickness (CMT) was measured by OCT and the aqueous flare value (AFV) by laser flare-cell photometry. These examinations were performed before surgery and 1 day, 1 week, 1 month, 2 months, and 3 months after surgery. Linear regression analysis through the origin was used to compare the correlations between the relative changes in flicker ERG amplitudes and the changes in the CMT and AFV at different times after the surgery. Main Outcome Measures: The amplitude of flicker ERGs, CMT, and AFV. Results: The mean amplitude of flicker ERGs increased significantly by 31% at 1 week after surgery (P
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- 2023
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6. Intraocular Inflammation Secondary to Intravitreal Brolucizumab Injection for Neovascular Age-Related Macular Degeneration in a Patient with Cognitive Impairment
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Natsuki Ueji, Yoko Mase, Akiko Kubo, Hisashi Matsubara, Shinichiro Chujo, Yoshitsugu Matsui, and Mineo Kondo
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age-related macular degeneration ,AMD ,intraocular inflammation ,IOI ,brolucizumab ,dementia ,Medicine (General) ,R5-920 - Abstract
Background and Objectives: Brolucizumab (IVBr) is a recently introduced anti-vascular endothelial growth factor (anti-VEGF) which has been found to be very effective in treating neovascular age-related macular degeneration (nAMD). We reported our findings in a case of nAMD that developed intraocular inflammation (IOI) after IVBr injections. Materials and Methods: A 79-year-old man was referred to our hospital complaining of reduced vision in both eyes of one-month’s duration. His decimal best-corrected visual acuity (BCVA) was 0.9 in the right eye and 1.0 in the left eye. He was diagnosed with nAMD in the left eye and was treated with intravitreal aflibercept (IVA). Despite the three-monthly IVA injections, the serous retinal pigment epithelial detachment (PED) and subretinal fluid (SRF) remained, and the VA gradually decreased to 0.1. Because of the patient being refractory to aflibercept treatment, we switched to 3-monthly IVBr injections. The BCVA gradually improved to 0.3 and optical coherence tomography (OCT) showed an absence of the serous PED and SRF. Three weeks after his third IVBr, he returned to our hospital with a complaint of reduced vision in his left eye that he first noted two weeks earlier. Our examination of the left eye showed signs of IOI mainly in the anterior chamber. The inflammation improved with topical steroids but the treatment of the IOI was delayed for two weeks. The patient was instructed that it was important to begin the treatment as soon as the symptoms of IOI developed. We then performed the Mini-Mental State Examination (MMSE), and his score indicated that he had cognitive impairment. Conclusions: We concluded that before beginning IVBr treatment in nAMD patients, a careful assessment must be made of the cognitive status of the patient.
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- 2023
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7. Cerebral trauma-induced dyschromatopsia in the left hemifield: case presentation
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Yoko Mase, Yoshitsugu Matsui, Eriko Uchiyama, Hisashi Matsubara, Masahiko Sugimoto, Akiko Kubo, and Mineo Kondo
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Acquired cerebral color anomaly ,Cerebral dyschromatopsia ,Hemilateral dyschromatopsia ,SWAP ,GCC thinning ,Retrograde transsynaptic degeneration ,Ophthalmology ,RE1-994 - Abstract
Abstract Background Acquired color anomalies caused by cerebral trauma are classified as either achromatopsias or dyschromatopsias (Zeki, Brain 113:1721–1777, 1990). The three main brain regions stimulated by color are V1, the lingual gyrus, which was designated as human V4 (hV4), and the fusiform gyrus, designated as V4α. (Zeki, Brain 113:1721–1777, 1990). An acquired cerebral color anomaly is often accompanied by visual field loss (hemi- and quadrantanopia), facial agnosia, prosopagnosia, visual agnosia, and anosognosia depending on the underlying pathology (Bartels and Zeki, Eur J Neurosci 12:172–193, 2000), (Meadows, Brain 97:615–632, 1974), (Pearman et al., Ann Neurol 5:253–261, 1979). The purpose of this study was to determine the characteristics of a patient who developed dyschromatopsia following a traumatic injury to her brain. Case presentation The patient was a 24-year-old woman who had a contusion to her right anterior temporal lobe. After the injury, she noticed color distortion and that blue objects appeared green in the left half of the visual field. Although conventional color vision tests did not detect any color vision abnormalities, short wavelength automated perimetry (SWAP) showed a decrease in sensitivity consistent with a left hemi-dyschromatopsia. Magnetic resonance imaging (MRI) detected abnormalities in the right fusiform gyrus, a part of the anterior temporal lobe. At follow-up 14 months later, subjective symptoms had disappeared, but the SWAP abnormalities persisted and a thinning of the sectorial ganglion cell complex (GCC) was detected. Conclusion The results indicate that although the subjective symptoms resolved early, a reduced sensitivity of SWAP remained and the optical coherence tomography (OCT) showed GCC thinning. We conclude that local abnormalities in the anterior section of fusiform gyrus can cause mild cerebral dyschromatopsia without other symptoms. These findings indicate that it is important to listen to the symptoms of the patient and perform appropriate tests including the SWAP and OCT at the early stage to objectively prove the presence of acquired cerebral color anomaly.
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- 2021
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8. Efficacy of Psychiatric Treatment to Treat a Specific Phobia of Intravitreal Injections in a Patient with Neovascular Age-Related Macular Degeneration
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Atsuta Ozaki, Hisashi Matsubara, Masahiko Sugimoto, Manami Kuze, Mineo Kondo, and Takashi Shiroyama
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specific phobia ,intravitreal injection ,psychiatric treatment ,retinal angiomatous proliferation ,cognitive-behavioral therapy ,Ophthalmology ,RE1-994 - Abstract
Intravitreal injection of anti-vascular endothelial growth factor (anti-VEGF) is essential for the treatment of macular diseases such as wet age-related macular degeneration and macular edema. Although continued treatment is needed to maintain good vision, some patients cannot continue such injections for various reasons, including specific phobias. Here, we report a case of a patient with a specific phobia of intravitreal injections who could resume treatment after undergoing combined drug and cognitive-behavioral therapy (CBT). A 74-year-old Japanese man diagnosed with retinal angiomatous proliferation by fluorescein angiography and indocyanine green angiography was treated with intravitreal anti-VEGF injection. However, at 8 months after the first treatment, he became difficult to treat because of a phobia of injections. He was treated with photodynamic therapy, but his macular edema did not improve. After a psychiatric consultation, he was diagnosed with a specific phobia of intravitreal injections. Combined drug and CBT enabled him to resume receiving intravitreal injections. This case demonstrates that a specific phobia of intravitreal injections may benefit from combined drug and CBT. In this regard, some patients with high anxiety and fear of intravitreal injections should be referred to a psychiatrist at an early stage.
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- 2021
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9. Effectiveness of Ripasudil, a Rho-Associated Coiled/Coil-Containing Protein Kinase Inhibitor, in Improving Retinoschisis and Cystic-Like Foveal Cavities in Eyes with X-Linked Retinoschisis
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Hitomi Suimon, Masahiko Sugimoto, Hisashi Matsubara, and Mineo Kondo
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cystic-like foveal cavities ,retinoschisis ,rho-associated coiled/coil-containing protein kinase inhibitor ,ripasudil hydrochloride hydrate ,x-linked retinoschisis ,Ophthalmology ,RE1-994 - Abstract
This is the first reported case of a successful resolution of cystic-like foveal cavities in eyes with X-linked juvenile retinoschisis (XLRS) treated with topical ripasudil hydrochloride hydrate, a Rho-associated coiled/coil-containing protein kinase (ROCK) inhibitor. A chart review was performed on 1 patient to collect all relevant clinical information and the optical coherence tomographic (OCT) images. A healthy 18-year-old young man presented with bilateral visual disturbances. The patient was diagnosed with XLRS from the spoke-wheel pattern around the macula, negative electroretinograms, and retinoschisis with cystic-like foveal cavities in the OCT images. Significant reductions of the retinoschisis and cystic-like cavities were observed after treatment with topical ripasudil. This is the first case of XLRS that had a resolution of cystic-like foveal cavities after topical ripasudil, a ROCK inhibitor. Since many XLRS patients have a worsening of their visual acuities due to the progressive nature of retinoschisis and cystic-like foveal cavities, topical ripasudil offers a potential treatment option.
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- 2020
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10. Visual prognosis of submacular hemorrhage secondary to age-related macular degeneration: A retrospective multicenter survey.
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Naomi Inoue, Aki Kato, Takashi Araki, Takeshi Kimura, Takamasa Kinoshita, Fumiki Okamoto, Tomoya Murakami, Yoshinori Mitamura, Taiji Sakamoto, Akiko Miki, Yoshihiro Takamura, Hisashi Matsubara, Hiroki Tsujinaka, Fumi Gomi, and Tsutomu Yasukawa
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Medicine ,Science - Abstract
PurposeTo investigate the clinical features, treatment options, and visual outcomes of submacular hemorrhage (SMH) secondary to neovascular age-related macular degeneration (nAMD).DesignA retrospective, observational case series.MethodsSetting: Multicenter institutional setting. Patient Population: A total of 127 patients (127 eyes; 88 men, 39 women; (mean age, 74.2 years)) diagnosed with AMD-associated SMHs exceeding 2 disc diameters involving the fovea. Observation: The AMD types, previous treatments, treatment options, anatomic findings, and best-corrected visual acuity (BCVA) were assessed. Main Outcome Measures: Clinical features, treatment options, and visual outcomes of SMHs secondary to nAMD.ResultsThirty-two eyes had typical AMD, 94 eyes polypoidal choroidal vasculopathy (PCV), and one eye retinal angiomatous proliferation. Eighty-five eyes were treatment-naïve; 42 eyes were treated previously: anti-vascular endothelial growth factor (VEGF) therapy (n = 26), photodynamic therapy (n = 3), and combined therapy (n = 13). Treatment of SMHs included vitrectomy (36 eyes), pneumatic displacement (49 eyes), and anti-VEGF monotherapy (42 eyes). The final BCVA improved significantly in treatment-naïve cases from 0.86 to 0.62 logarithm of the minimal angle of resolution (logMAR) unit (Snellen equivalent from 20/145 to 20/83) and from 0.80 to 0.56 (Snellen equivalent from 20/126 to 20/73) in PCV cases. Meanwhile, the BCVA logMAR values improved from 1.15 to 0.75 (Snellen equivalent from 20/283 to 20/112) and from 0.87 to 0.63 (Snellen equivalent from 20/148 to 20/85) in eyes that underwent vitrectomy or pneumatic displacement, respectively. In eyes with BCVAs between 20/133 to 20/40 at SMH onset, the final VA in the pneumatic displacement group was better than in the anti-VEGF monotherapy group. One eye had a retinal detachment and 1 eye had a macular hole in the vitrectomy group, and 5 eyes had a vitreous hemorrhage in the pneumatic displacement group.ConclusionsThe recommended treatment for SMHs secondary to nAMD exceeding 2 disc area and with BCVA below 20/40 is vitrectomy or pneumatic displacement for visual improvement.
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- 2022
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11. Differences in clinical characteristics and treatment outcomes of submacular hemorrhage caused by age-related macular degeneration and retinal macroaneurysms: A multicenter survey from the Japan Clinical Retina Study (J-CREST) group.
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Takeshi Kimura, Takashi Araki, Tsutomu Yasukawa, Aki Kato, Soichiro Kuwayama, Takamasa Kinoshita, Fumiki Okamoto, Tomoya Murakami, Yoshinori Mitamura, Taiji Sakamoto, Hiroto Terasaki, Sentaro Kusuhara, Akiko Miki, Yoshihiro Takamura, Mineo Kondo, Hisashi Matsubara, Tetsuo Ueda, Hiroki Tsujinaka, and Fumi Gomi
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Medicine ,Science - Abstract
PurposeTo evaluate the clinical characteristics, treatment trends, and visual prognosis of submacular hemorrhage (SMH) secondary to neovascular age-related macular degeneration (nAMD) and retinal arterial macroaneurysm (RAM).MethodsThis retrospective study enrolled 187 Japanese patients with SMH at 10 institutions from 2015 to 2018. Medical records including SMH etiology, best-corrected visual acuity (BCVA), fundus photographs, optical coherence tomography images, and selected treatments were analyzed.ResultsMajor causes of SMH were typical nAMD (tnAMD) (18%), polypoidal choroidal vasculopathy (PCV) (50%) and RAM (29%). Age, male/female ratio, baseline BCVA, central retinal thickness, and involved retinal layers were significantly different between etiologies (all PConclusionsThe characteristics of, and treatment strategy for, SMH were different between the underlying diseases. Anti-vascular endothelial growth factor treatment with or without expansile gas was mainly chosen for SMH in tnAMD and PCV, whereas vitrectomy with gas was the most common treatment for RAM, and the higher rate for vitrectomy might result in the greater BCVA improvement in the RAM group than in the other groups. Final BCVA was better in PCV, RAM, and tnAMD, in that order, because patients with PCV were younger and had better baseline BCVA.
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- 2022
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12. A Case of Focal Choroidal Excavation Development Associated with Multiple Evanescent White Dot Syndrome
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Hisashi Matsubara, Eriko Uchiyama, Katsuya Suzuki, Yoshito Matsuda, and Mineo Kondo
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Choroidal excavation ,Choroidal thickness ,Multiple evanescent white dot syndrome ,Optical coherence tomography ,Ophthalmology ,RE1-994 - Abstract
Focal choroidal excavation (FCE) is described as an excavated lesion of the choroid that can be detected by optical coherence tomography (OCT). While the exact pathogenesis of FCE remains unclear, it has been proposed in some cases that there is an association with the inflammation in the outer retina. We present a case of FCE development that was detected by spectral domain OCT (SD-OCT) and found to be associated with multiple evanescent white dot syndrome (MEWDS). A 40-year-old Japanese woman was diagnosed with MEWDS based on multiple white dots observed from the posterior pole to the midperiphery, along with yellow granularity in the fovea. SD-OCT revealed separation between the retinal pigment epithelium (RPE) and Bruch’s membrane (BM) and discontinuations of the ellipsoid zone, RPE, and BM. At 4 weeks after onset, several of the white dots disappeared, the yellow granularity in the fovea became small, and we detected nonconforming choroidal excavation under the central fovea. The choroidal excavation gradually deepened and changed to a conforming pattern. These findings suggest that the degree of the impairment caused by inflammation and the plasticity of the BM and RPE complex may be associated with different types of acquired FCE.
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- 2018
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13. A Case of Sustained Intraocular Pressure Elevation after Multiple Intravitreal Injection of Ranibizumab and Aflibercept for Neovascular Age-Related Macular Degeneration
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Hisashi Matsubara, Ryohei Miyata, Maki Kobayashi, Hideyuki Tsukitome, Kengo Ikesugi, and Mineo Kondo
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Age-related macular degeneration ,Anti-vascular endothelial growth factor ,Ranibizumab ,Aflibercept ,Multiple intravitreal injections ,Medication switching ,Intraocular pressure ,Ocular hypertension ,Ophthalmology ,RE1-994 - Abstract
Intravitreal injections of anti-vascular endothelial growth factor (VEGF) agents are widely used to treat neovascular age-related macular degeneration (nAMD). Although these treatments are effective, multiple injections have recently been recommended to ensure that there is a good long-term prognosis. However, sustained intraocular pressure (IOP) elevations have been reported to develop after multiple injections of anti-VEGF agents. We present our findings of a case of uncontrolled and persistent IOP elevation after switching from intravitreal ranibizumab injections to intravitreal aflibercept injections. A 74-year-old Japanese man without a history of glaucoma underwent 22 ranibizumab injections for nAMD and suddenly developed an elevated IOP after the 22nd injection. Although the subsequent medical treatment led to normalization of his IOP, the subretinal fluid under the central fovea remained even after the 25th injection of ranibizumab. Thus, ranibizumab treatment was switched to bimonthly intravitreal aflibercept injections in conjunction with glaucoma medications. His IOP recovered to within the normal range; however, after the 11th aflibercept injection, there was a sudden elevation of his IOP in spite of the continued glaucoma medications. Due to this sustained IOP elevation, his aflibercept injections were suspended for 16 weeks. Because his IOP could not be normalized by a full glaucoma medication regimen, the patient underwent trabeculotomy, which resulted in a lowering of the IOP to normal levels. We conclude that patients who receive serial intravitreal injections of anti-VEGF agents need to be closely monitored because severe and sustained ocular hypertension can develop.
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- 2016
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14. Method of Quantifying Size of Retinal Hemorrhages in Eyes with Branch Retinal Vein Occlusion Using 14-Square Grid: Interrater and Intrarater Reliability
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Yuko Takashima, Masahiko Sugimoto, Kumiko Kato, Maki Kozawa, Kengo Ikesugi, Hisashi Matsubara, and Mineo Kondo
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Ophthalmology ,RE1-994 - Abstract
Purpose. To describe a method of quantifying the size of the retinal hemorrhages in branch retinal vein occlusion (BRVO) and to determine the interrater and intrarater reliabilities of these measurements. Methods. Thirty-five fundus photographs from 35 consecutive eyes with BRVO were studied. The fundus images were analyzed with Power-Point® software, and a grid of 14 squares was laid over the fundus image. Raters were asked to judge the percentage of each of the 14 squares that was covered by the hemorrhages, and the average of the 14 squares was taken to be the relative size of the retinal hemorrhage. Results. Interrater reliability between three raters was higher when a grid with 14 squares was used (intraclass correlation coefficient (ICC), 0.96) than that when a box with no grid was used (ICC, 0.78). Intrarater reliability, which was calculated by the retinal hemorrhage area measured on two different days, was also higher (ICC, 0.97) than that with no grid (ICC, 0.86). Interrater reliability for five fundus pictures with poor image quality was also good when a grid with 14 squares was used (ICC, 0.88). Conclusions. Although our method is subjective, excellent interrater and intrarater reliabilities indicate that this method can be adapted for clinical use.
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- 2016
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15. Changes in outer retinal microstructures during six month period in eyes with acute zonal occult outer retinopathy-complex.
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Yoshitsugu Matsui, Hisashi Matsubara, Shinji Ueno, Yasuki Ito, Hiroko Terasaki, and Mineo Kondo
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Medicine ,Science - Abstract
PURPOSE: To study the changes in the outer retinal microstructures during a six month period after the onset of acute zonal occult outer retinopathy (AZOOR)-complex by spectral-domain optical coherence tomography (SD-OCT). METHODS: Seventeen eyes of 17 patients with the AZOOR-complex were studied. The integrity of the external limiting membrane (ELM), ellipsoid zone (EZ; also called the inner/outer segment junction), and interdigitation zone (IDZ; also called the cone outer segment tips) were evaluated in the SD-OCT images obtained at the initial visit and at six months. The three highly reflective bands were divided into three types; continuous, discontinuous, and absent. The integrity of the outer nuclear layer (ONL) was also assessed. RESULTS: Among the three highly reflective bands, the IDZ was most altered at the initial visit and least recovered at six months. Fifteen of 17 eyes (88%) had a recovery of at least one of the three bands at six months in the retinal area where the ONL was intact, and these areas showed an improvement of visual field. Three eyes (18%) had retinal areas where the ONL was absent at the initial visit, and there was no recovery in both the retinal structures and visual fields in these areas. CONCLUSIONS: Our results indicate that more than 85% eyes with AZOOR-complex show some recovery in the microstructures of the outer retina during a six month period if the ONL is intact. We conclude that SD-OCT is a useful method to monitor the changes of the outer retinal microstructure in eyes with the AZOOR-complex.
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- 2014
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16. Study of specific IgE and IgG4 antibodies to mite antigen in asthmatic children during immunotherapy
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Hiroyuki Matsuoka, Yutaka Atsuta, Hisashi Matsubara, Motoi Adachi, Yukari Matsushita, Toshihide Obe, Katsuhiko Ando, and Yasuo Chinzei
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bronchial asthma ,densitometer ,Dermatophagoides ,IgE ,lgG4 ,immunoblotting ,immunotherapy ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Using immunoblotting and densitometer techniques, we followed the levels of IgE and IgG4 antibodies to Dermatophagoides farinae antigen in the sera of 12 asthmatic children during immunotherapy, repeated injections of house dust extract, for 2 years. The symptoms of asthma were reduced or disappeared by the 6th month after starting immunotherapy in 12 children. Two years later, RAST scores to house dust and D. farinae in each child were still 4 or 5. The levels of IgE antibodies to Der fII in all cases did not change drastically. IgE antibodies to higher molecular weight antigens (Der fI, fIII, fIV etc.) developed in some cases, suggesting that repeated injections of crude extract tended to induce IgE antibodies to alternative molecules in patients. The IgG4 antibody to Der fII increased in 10 cases, while that to Der fI increased in three of 12 cases, indicating that production of IgG4 antibodies to mite antigens started and expanded with repeated injections of house dust extract. The amount of induced IgG4 antibodies to Der fI and Der fII was not enough to inhibit the immunoblot reaction of IgE antibodies to these molecules.
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- 1998
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17. THREE CASES OF ACUTE RETINAL NECROSIS WITH ATYPICAL FUNDUS FINDINGS.
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Shinichiro Chujo, Hisashi Matsubara, Atsushi Ichio, Yoshitsugu Matsui, Masahiko Sugimoto, and Mineo Kondo
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Purpose: To determine the mechanism for the development of segmental granular lesions along the retinal vessels in eyes with acute retinal necrosis. Method: This was a retrospective analysis of the medical records of three eyes of three patients who were diagnosed with acute retinal necrosis that had atypical segmental granular lesions aligned along the retinal vessels. Results: The segmental granular lesions were present on the retinal arteries and veins throughout the retina. Optical coherence tomography showed that the granular lesions protruded into the vitreous cavity. Histopathologic examinations confirmed that the lesions were made up of lymphocytes. Conclusion: We suggest that the granular lesions were formed by a mechanism similar to that of HTLV-1-associated uveitis. We also found that the granular lesions disappeared soon after vitrectomy. [ABSTRACT FROM AUTHOR]
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- 2024
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18. Comparisons of Clinical Characteristics and Surgical Outcomes of Epiretinal Membrane Foveoschisis to Typical Epiretinal Membrane
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Kondo, Taku Sasaki, Yoshitsugu Matsui, Kumiko Kato, Shinichiro Chujo, Satoshi Maeda, Atsuta Ozaki, Kengo Ikesugi, Masahiko Sugimoto, Hisashi Matsubara, and Mineo
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epiretinal membrane ,epiretinal membrane foveoschisis ,sex ,vitrectomy - Abstract
Epiretinal membrane (ERM) foveoschisis is a recently proposed clinical entity. The purpose of this study was to compare the clinical characteristics and surgical outcomes of eyes with ERM foveoschisis to those of typical ERM. The medical records of all patients with ERM-related disorders examined between 2011 and 2020 were reviewed. ERM foveoschisis was defined by the clinical criteria proposed by an international panel of experts on ERMs. The background factors, clinical characteristics, and surgical outcomes of ERM foveoschisis were compared to those of typical ERM. Forty eyes with ERM foveoschisis were compared to 333 eyes with typical ERM. The percentage of women was significantly higher in the ERM foveoschisis group (92.5%) than in the typical ERM group (48.9%, p < 0.001). The central macular thickness (CMT) was significantly thinner in the ERM foveoschisis group (340 ± 110 μm) than in the typical ERM groups (476 ± 111 μm, p < 0.01). The degree of improvement in the best-corrected visual acuity (BCVA) three months after the surgery did not differ between the two groups (p = 0.59). These results suggest that the ERM foveoschisis is more likely to occur in women and that the prognosis after surgery is comparable to typical ERM.
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- 2023
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19. Anti-Vascular Endothelial Growth Factor Treatment for Macular Edema in Eyes with Branch Retinal Vein Occlusion with vs Without Glaucoma – Does Glaucoma Affect Visual Outcome in Eyes with BRVO-ME After antiVEGF Injections?
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Shin Asami, Masahiko Sugimoto, Hideyuki Tsukitome, Kumiko Kato, Hisashi Matsubara, and Mineo Kondo
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Ophthalmology ,Clinical Ophthalmology - Abstract
Shin Asami, Masahiko Sugimoto, Hideyuki Tsukitome, Kumiko Kato, Hisashi Matsubara, Mineo Kondo Department of Ophthalmology, Mie University Graduate School of Medicine, Tsu, Mie, JapanCorrespondence: Masahiko Sugimoto, Department of Ophthalmology, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan, Tel +81-59-231-5027, Fax +81-59-231-3036, Email sugmochi@clin.medic.mie-u.ac.jpPurpose: To compare the therapeutic effects of anti-vascular endothelial growth factor (anti-VEGF) agents in eyes with macular edema associated with branch retinal vein occlusion (BRVO-ME) with glaucoma to those without glaucoma.Patients and Methods: This retrospective study was conducted using the medical records of Mie University Hospital from 2013 to 2017. Patients were recruited if they had received anti-VEGF agents for BRVO-ME treatment and included 30 patients (30 eyes) without glaucoma (G[-] group) and 27 patients (27 eyes) with glaucoma (G[+] group). The central retinal thickness (CRT) and best-corrected visual acuity (BCVA) at 3 months after a single injection of anti-VEGF agents were compared between the two groups.Results: Before treatment, the mean±standard deviation of the CRT was 514.2± 117.3 μm for the G[-] group, which was not significantly different from that for the G[+] group (533.4± 171.4 μm). The CRT in the G[-] and G[+] groups significantly reduced to 321.1± 114.6 μm and 347.8± 134.7 μm, respectively, at 1 month after the injection and to 360.4± 159.5 μm and 352.4± 151.9 μm, respectively, at 3 months after the injection (P< 0.01 for each group). The difference in the degree of CRT reduction between the two groups was not significant. Before treatment, the BCVA was 0.42± 0.32 logMAR units in the G[-] group and 0.57± 0.33 logMAR units in the G[+] group, showing no significant difference. The BCVA in the G[-] and G[+] groups improved significantly to 0.27± 0.26 logMAR units and 0.34± 0.42 logMAR units, respectively, at 1 month, and to 0.18± 0.20 logMAR units and 0.39± 0.34 logMAR units, respectively, at 3 months (P< 0.01). The BCVA in the G[-] group was significantly better than that in the G[+] group at 3 months (P=0.02).Conclusion: The therapeutic response of anti-VEGF agents for BRVO-ME is affected by the presence of glaucoma.Keywords: anti-vascular endothelial growth factor treatment, branch retinal vein occlusion, glaucoma, macular edema
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- 2022
20. Suspension of Anti-VEGF Treatment Does Not Affect Expansion of RPE Atrophy in Neovascular Age-Related Macular Degeneration
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Shinichiro Chujo, Hisashi Matsubara, Yoshitsugu Matsui, Masahiko Sugimoto, and Mineo Kondo
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General Medicine ,age-related macular degeneration ,AMD ,anti-VEGF agent ,intravitreal injection ,treatment suspension ,RPE atrophy - Abstract
Purpose: To determine whether atrophy of the retinal pigment epithelium (RPE) in eyes with neovascular age-related macular degeneration (nAMD), which meets the criteria for the suspension of anti-vascular endothelial growth factor (anti-VEGF) treatment, is associated with anti-VEGF treatments. Methods: Twelve eyes of 12 patients with nAMD who began anti-VEGF treatment and were followed for 1 year after meeting the criteria for the suspension of anti-VEGF were studied. Six eyes of six patients were placed in the continuation group, and six eyes of six patients were placed in the suspension group. The RPE atrophic area at the time of the last anti-VEGF treatment was set as the baseline size and that at 12 months after the baseline (Month 12) was taken as the final size. A comparison of the expansion rate of RPE atrophy between the two groups was made by the square-root transformed differences. Results: The expansion rate of atrophy was 0.55 (0.43, 0.72) mm/year in the continuation group and 0.33 (0.15, 0.41) mm/year in the suspension group. This difference was not significant. (p = 0.29). Conclusions: Suspension of anti-VEGF treatments in eyes with nAMD does not alter the expansion rate of RPE atrophy.
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- 2023
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21. Efficacy, durability, and safety of intravitreal faricimab up to every 16 weeks for neovascular age-related macular degeneration (TENAYA and LUCERNE): two randomised, double-masked, phase 3, non-inferiority trials
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Jeffrey S Heier, Arshad M Khanani, Carlos Quezada Ruiz, Karen Basu, Philip J Ferrone, Christopher Brittain, Marta S Figueroa, Hugh Lin, Frank G Holz, Vaibhavi Patel, Timothy Y Y Lai, David Silverman, Carl Regillo, Balakumar Swaminathan, Francesco Viola, Chui Ming Gemmy Cheung, Tien Y Wong, Ashkan Abbey, Elmira Abdulaeva, Prema Abraham, Alfredo Adan Civera, Hansjurgen Agostini, Arturo Alezzandrini, Virgil Alfaro, Arghavan Almony, Lebriz Altay, Payam Amini, Andrew Antoszyk, Etelka Aradi, Luis Arias, Jennifer Arnold, Riaz Asaria, Sergei Astakhov, Yury Astakhov, Carl C. Awh, Chandra Balaratnasingam, Sanjiv Banerjee, Caroline Baumal, Matthias Becker, Rubens Belfort, Galina Bratko, William Jr. Z Bridges, Jamin Brown, David M. Brown, Maria Budzinskaya, Sylvia Buffet, Stuart Burgess, Iksoo Byon, Carlo Cagini, Jorge Calzada, Stone Cameron, Peter Campochiaro, John Carlson, Angela Carneiro, Clement Chan, Emmanuel Chang, Andrew Chang, Daniel Chao, Nauman Chaudhry, Caroline Chee, Andrew Cheek, Shih-Jen Chen, San-Ni Chen, Gemmy Cheung, Saradha Chexal, Mark Chittum, David Chow, Abosede Cole, Brian Connolly, Pierre Loic Cornut, Stephen Couvillion, Carl Danzig, Vesselin Daskalov, Amr Dessouki, Francois Devin, Michael Dollin, Rosa Dolz, Louise Downey, Richard Dreyer, Pravin Dugel, David Eichenbaum, Bora Eldem, Robert Engstrom, Joan Josep Escobar, Nicole Eter, David W. Faber, Naomi Falk, Leonard Feiner, Alvaro Fernandez Vega, Philip Ferrone, Marta Figueroa, Howard Fine, Mitchell Fineman, Gregory M. Fox, Catherine Francais, Pablo Franco, Samantha Fraser-Bell, Nicholas Fung, Federico Furno Sola, Richard Gale, Alfredo Garcia-Layana, Julie Gasperini, Maciej Gawecki, Faruque Ghanchi, Manjot Gill, Michel Giunta, David Glaser, Michaella Goldstein, Francisco Gomez Ulla, Fumi Gomi, Victor Gonzalez, Jordan Graff, Sunil Gupta, Rainer Guthoff, Robyn Guymer, Anton Haas, Robert Hampton, Katja Hatz, Ken Hayashi, Jeffrey Heier, Ewa Herba, Vrinda Hershberger, Patrick Higgins, Nancy Holekamp, Shigeru Honda, James Howard, Allen Hu, Stephen Huddleston, Tomohiro Iida, Hiroko Imaizumi, Yasuo Ito, Yasuki Ito, Sujit Itty, Golnaz Javey, Cameron Javid, Tatsushi Kaga, Jakub Kaluzny, Se Woong Kang, Kapil Kapoor, Levent Karabas, Tsutomu Kawasaki, Patrick Kelty, Agnes Kerenyi, Arshad Khanani, Ramin Khoramnia, Rahul Khurana, Kazuhiro Kimura, Kendra Klein-Mascia, Namie Kobayashi, Laurent Kodjikian, Hideki Koizumi, Gregg Kokame, Alexey Kulikov, Henry Kwong, Robert Kwun, Timothy Lai, Chi-Chun Lai, Laurent Lalonde, Paolo Lanzetta, Michael Larsen, Adrian Lavina, Won Ki Lee, ji Eun Lee, Seong Lee, Jaime Levy, Lucas Lindsell, Mimi Liu, Nikolas London, Andrew Lotery, David Lozano Rechy, Alan Luckie, David Maberley, Takatoshi Maeno, Sajjad Mahmood, Fuad Makkouk, Dennis Marcus, Alan Margherio, Helene Masse, Hisashi Matsubara, Raj Maturi, Sonia Mehta, Geeta Menon, Jale Mentes, Mark Michels, Yoshinori Mitamura, Paul Mitchell, Quresh Mohamed, Jordi Mones, Rodrigo Montemayor Lobo, Javier Montero, Jeffrey Moore, Ryusaburo Mori, Haia Morori-Katz, Raj Mukherjee, Toshinori Murata, Maria Muzyka-Wozniak, Marco Nardi, Niro Narendran, Massimo Nicolo, Jared Nielsen, Tetsuya Nishimura, Kousuke Noda, Anna Nowinska, Hideyasu Oh, Matthew Ohr, Annabelle Okada, Piotr Oleksy, Shinji Ono, Sengul Ozdek, Banu Ozturk, Luis Pablo, Kyu Hyung Park, D. Wilki Parke, Maria Cristina Parravano, Praveen Patel, Apurva Patel, Sunil Patel, Sugat Patel, Daniel Pauleikhoff, Ian Pearce, Joel Pearlman, Iva Petkova, Dante Pieramici, Nadezhda Pozdeyeva, Jawad Qureshi, Dorota Raczynska, Juan Ramirez Estudillo, Rajiv Rathod, Hessam Razavi, Gayatri Reilly, Federico Ricci, Ryan Rich, Bożena Romanowska-Dixon, Irit Rosenblatt, Jose Maria Ruiz Moreno, Stefan Sacu, Habiba Saedon, Usman Saeed, Min Sagong, Taiji Sakamoto, Sukhpal Sandhu, Laura Sararols, Mario Saravia, Ramin Schadlu, Patricio Schlottmann, Tetsuju Sekiryu, András Seres, Figen Sermet, Sumit Shah, Rohan Shah, Ankur Shah, Thomas Sheidow, Veeral Sheth, Chieko Shiragami, Bartosz Sikorski, Rufino Silva, Lawrence Singerman, Robert Sisk, Torben L. Sørensen, Eric Souied, David-J Spinak, Giovanni Staurenghi, Robert Steinmetz, Glenn Stoller, Robert Stoltz, Eric Suan, Ivan Suner, Yzer Suzanne, Ramin Tadayoni, Kanji Takahashi, Kei Takayama, Alexandre Taleb, James Talks, Hiroko Terasaki, John Thompson, Edit Toth-Molnar, Khoi Tran, Raman Tuli, Eduardo Uchiyama, Attila Vajas, Janneke Van Lith-Verhoeven, Balazs Varsanyi, Gianni Virgili, Gábor Vogt, Michael Völker, David Warrow, Pamela Weber, John A. Wells, Sanjeewa Wickremasinghe, Mark Wieland, Geoff Williams, Thomas Williams, David Wong, King Wong, James Wong, Ian Wong, Robert Wong, Bogumil Wowra, Charles C. Wykoff, Ayana Yamashita, Kanako Yasuda, Gursel Yilmaz, Glenn Yiu, Ai Yoneda, Young Hee Yoon, Barak Yoreh, HyeongGon Yu, Seung Young Yu, Tatiana Yurieva, Alberto Zambrano, Barbara Zatorska, and Carlos Zeolite
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Aged, 80 and over ,Male ,Vascular Endothelial Growth Factor A ,Recombinant Fusion Proteins ,Visual Acuity ,Angiogenesis Inhibitors ,General Medicine ,Drug Administration Schedule ,Angiopoietin-2 ,Macular Degeneration ,Receptors, Vascular Endothelial Growth Factor ,Treatment Outcome ,Double-Blind Method ,Antibodies, Bispecific ,Intravitreal Injections ,Humans ,Female ,Aged - Abstract
Faricimab is a bispecific antibody that acts through dual inhibition of both angiopoietin-2 and vascular endothelial growth factor A. We report primary results of two phase 3 trials evaluating intravitreal faricimab with extension up to every 16 weeks for neovascular age-related macular degeneration (nAMD).TENAYA and LUCERNE were randomised, double-masked, non-inferiority trials across 271 sites worldwide. Treatment-naive patients with nAMD aged 50 years or older were randomly assigned (1:1) to intravitreal faricimab 6·0 mg up to every 16 weeks, based on protocol-defined disease activity assessments at weeks 20 and 24, or aflibercept 2·0 mg every 8 weeks. Randomisation was performed through an interactive voice or web-based response system using a stratified permuted block randomisation method. Patients, investigators, those assessing outcomes, and the funder were masked to group assignments. The primary endpoint was mean change in best-corrected visual acuity (BCVA) from baseline averaged over weeks 40, 44, and 48 (prespecified non-inferiority margin of four letters), in the intention-to-treat population. Safety analyses included patients who received at least one dose of study treatment. These trials are registered with ClinicalTrials.gov (TENAYA NCT03823287 and LUCERNE NCT03823300).Across the two trials, 1329 patients were randomly assigned between Feb 19 and Nov 19, 2019 (TENAYA n=334 faricimab and n=337 aflibercept), and between March 11 and Nov 1, 2019 (LUCERNE n=331 faricimab and n=327 aflibercept). BCVA change from baseline with faricimab was non-inferior to aflibercept in both TENAYA (adjusted mean change 5·8 letters [95% CI 4·6 to 7·1] and 5·1 letters [3·9 to 6·4]; treatment difference 0·7 letters [-1·1 to 2·5]) and LUCERNE (6·6 letters [5·3 to 7·8] and 6·6 letters [5·3 to 7·8]; treatment difference 0·0 letters [-1·7 to 1·8]). Rates of ocular adverse events were comparable between faricimab and aflibercept (TENAYA n=121 [36·3%] vs n=128 [38·1%], and LUCERNE n=133 [40·2%] vs n=118 [36·2%]).Visual benefits with faricimab given at up to 16-week intervals demonstrates its potential to meaningfully extend the time between treatments with sustained efficacy, thereby reducing treatment burden in patients with nAMD.F Hoffmann-La Roche.
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- 2022
22. Effects of suspension of anti-vascular endothelial growth factor treatment for neovascular age-related macular degeneration in clinical setting
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Hisashi Matsubara, Yoshitsugu Matsui, Ryohei Miyata, Atsushi Ichio, Shinichiro Chujo, Hiroko Enomoto, Masahiko Sugimoto, and Mineo Kondo
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Vascular Endothelial Growth Factor A ,genetic structures ,Vascular Endothelial Growth Factors ,Visual Acuity ,Angiogenesis Inhibitors ,Sensory Systems ,Macular Degeneration ,Cellular and Molecular Neuroscience ,Ophthalmology ,Treatment Outcome ,Recurrence ,Ranibizumab ,Intravitreal Injections ,Wet Macular Degeneration ,Humans ,Retrospective Studies - Abstract
Purpose To investigate the outcomes of a suspension of anti-vascular endothelial growth factor (anti-VEGF) treatments in the eyes with neovascular age-related macular degeneration (nAMD). Methods This was a retrospective study that examined eyes having no exudation for 48 weeks while undergoing intravitreal anti-VEGF injections every 12 to 16 weeks. The rate and time of recurrences, best-corrected visual acuity (BCVA), central subfield thickness (CST), number of visits, and reactivity to anti-VEGF were determined after the suspension of the anti-VEGF treatments. Results In 34 eyes of 34 patients, 17 eyes (50.0%) had a recurrence during the 24-month follow-up period. The median time of a recurrence was 10 months. The BCVA was maintained for 24 months after the suspension regardless of the development of any recurrences. In 41.7% of the eyes that resumed treatment, the duration of exudation suppression by the anti-VEGF therapy was shorter than 12 weeks during the 12 months after restarting the anti-VEGF treatments. There was a significant increase in the number of visits during the first year after beginning the suspension versus during the 1 year before the suspension (non-recurrence group; P = 0.007, recurrence group; P = 0.001). Conclusion Although one-half of the eyes had a recurrence within 24 months after a suspension of anti-VEGF treatment, the BCVA was maintained after a resumption of the anti-VEGF treatments. However, the number of hospital visits increases regardless of the recurrences and the lesion stability is altered by the anti-VEGF suspension. Clinicians should explain both the advantages and disadvantages of anti-VEGF suspension to nAMD patients.
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- 2022
23. Disease Generating Model for 3D Display of the Effect of Treatment on 3D Optical Coherence Tomography Images.
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Nguyen Ngoc Anh Huyen, Ai Yamakawa, Dai Kodama, Shinji Tsuruoka, Hiroharu Kawanaka, Haruhiko Takase, Yukitaka Uji, Hisashi Matsubara, and Fumio Okuyama
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- 2013
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24. Extraction of Disease Area from Retinal Optical Coherence Tomography Images Using Three Dimensional Regional Statistics.
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Ikunari Nakahara, Mohd Fadzil bin Abdul Kadir, Shinji Tsuruoka, Haruhiko Takase, Hiroharu Kawanaka, Fumio Okuyama, and Hisashi Matsubara
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- 2013
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25. Multi-directional alignment method for three-dimensional optical coherence tomographic images.
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Naoki Takeno, Kosuke Kagotani, Shinji Tsuruoka, Hiroharu Kawanaka, Haruhiko Takase, Hisashi Matsubara, Fumio Okuyama, and Hisanori Yagami
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- 2012
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26. A proposal of extracting retinal boundaries for optical coherence tomography using three dimensional active grid.
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Naoki Takeno, Shinji Tsuruoka, Hiroharu Kawanaka, Haruhiko Takase, Hisashi Matsubara, Fumio Okuyama, and Hisanori Yagami
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- 2012
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27. Classification of good visual acuity over time in patients with branch retinal vein occlusion with macular edema using support vector machine
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Hisashi Matsubara, Yoko Mase, Yoshitsugu Matsui, Kazuya Imamura, Mihiro Ooka, Mineo Kondo, Hiroharu Kawanaka, and Shinichiro Chujo
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medicine.medical_specialty ,Support Vector Machine ,Visual acuity ,genetic structures ,Visual Acuity ,Angiogenesis Inhibitors ,Macular Edema ,Cellular and Molecular Neuroscience ,Good visual acuity ,Optical coherence tomography ,Pro re nata ,Ophthalmology ,Retinal Vein Occlusion ,medicine ,Humans ,External limiting membrane ,Macular edema ,Retrospective Studies ,medicine.diagnostic_test ,business.industry ,medicine.disease ,eye diseases ,Sensory Systems ,Support vector machine ,Treatment Outcome ,medicine.anatomical_structure ,Intravitreal Injections ,Branch retinal vein occlusion ,sense organs ,medicine.symptom ,business ,Tomography, Optical Coherence - Abstract
To identify the eyes with macular edema (ME) due to a branch retinal vein occlusion (BRVO) that have good visual acuity during the continuous anti-vascular endothelial growth factor (anti-VEGF) treatment based on the patients’ clinical information and optical coherence tomography (OCT) images by using machine learning. Sixty-six eyes of 66 patients received 1 anti-VEGF injection followed by repeated injections in the pro re nata (PRN) regimen for 12 months. The patients were divided into two groups: those with and those without good vision during the 1-year experimental period. Handcraft features were defined from the OCT images at the time of the first resolution of the ME. Variables with a significant difference between the groups were used as explanatory variables. A classifier was created with handcrafted features based on a support vector machine (SVM) that adjusted parameters for increasing maximal precision. The age, best-corrected visual acuity (BCVA) at the baseline, BCVA at the first resolution of the ME, integrity and reflectivity of the external limiting membrane (ELM), the ellipsoid zone (EZ), and area of the outer segments of the photoreceptors were selected as explanatory variables. The classification performance was 0.806 for accuracy, 0.768 for precision, 0.772 for recall, and 0.752 for the F-measure. The use of the SVM of the patient’s clinical information and OCT images can be helpful for determining the prognosis of the BCVA during continued pro re nata anti-VEGF treatment in eyes with ME associated with BRVO.
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- 2021
28. Three cases of acute retinal necrosis with atypical fundus findings
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Shinichiro Chujo, Hisashi Matsubara, Atsushi Ichio, Yoshitsugu Matsui, Masahiko Sugimoto, and Mineo Kondo
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Ophthalmology ,General Medicine - Published
- 2022
29. Impact of the COVID-19 Pandemic on Anti-Vascular Endothelial Growth Factor Therapy for Diabetic Macular Edema in Japan
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Ryohei Komori, Yoshihiro Takamura, Yutaka Yamada, Masakazu Morioka, Hisashi Matsubara, Takao Hirano, Yoshinori Mitamura, Miho Shimizu, Sentaro Kusuhara, Tomoya Murakami, Ryotaro Nihei, Tetsuo Ueda, Hiroshi Kunikata, Tatsuya Jujo, Hiroto Terasaki, Daisuke Nagasato, Kousuke Noda, Rie Osaka, Kazuki Nagai, Shigeo Yoshida, Miho Nozaki, Hidetaka Noma, Gaku Ishigooka, Aya Takahashi, Osamu Sawada, Kazuhiro Kimura, and Masaru Inatani
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anti-VEGF therapy ,COVID-19 ,diabetic macular edema ,General Medicine - Abstract
Anti-vascular endothelial growth factor (VEGF) therapy for diabetic macular edema (DME) improves visual acuity. However, repeated injections during routine outpatient visits are required to maintain this effect. The recent sudden global outbreak of coronavirus disease 2019 (COVID-19) had a major impact on daily life, including medical care, such as the provision of VEGF therapy. We retrospectively investigated the relationship between the number of anti-VEGF injections for DME and the number of new COVID-19-positive patients at 23 centers in Japan. We also surveyed ophthalmologists regarding the impact of the COVID-19 pandemic on anti-VEGF therapy. In the third and fourth waves of the pandemic, when the number of infected patients increased, the number of injections significantly decreased. In the first, third, and fourth waves, the number of injections increased significantly during the last month of each wave. Approximately 60.9% of ophthalmologists reported that the number of injections decreased after the pandemic. Of the facilities, 52.2% extended the clinic visit intervals; however, there was no significant difference in the actual number of injections given between before and after the pandemic. Although the number of injections temporarily decreased, Japanese ophthalmologists maintained the total annual number of anti-VEGF injections for DME during the pandemic.
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- 2022
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30. Optical coherence tomography angiography application to pigmented iris: Could a new index quantify blood flow?
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Cecilia Acuti Martellucci, Stefano Lucentini, Mineo Kondo, Masahiko Sugimoto, Paolo Nucci, Hisashi Matsubara, Yoshitsugu Matsui, Francesco Bonsignore, Kengo Ikesugi, and Saverio Luccarelli
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Miosis ,medicine.medical_specialty ,iris pigmentation ,surrogate marker ,Iris ,Adaptation (eye) ,Pupil ,NO ,03 medical and health sciences ,0302 clinical medicine ,Ophthalmology ,Mydriasis ,Humans ,Medicine ,Scotopic vision ,Fluorescein Angiography ,Iris (anatomy) ,030304 developmental biology ,0303 health sciences ,Anterior segment imaging, iris vasculature, OCTA, iris pigmentation, surrogate marker, pupil size ,business.industry ,pupil size ,Retinal Vessels ,General Medicine ,Blood flow ,Cross-Sectional Studies ,medicine.anatomical_structure ,iris vasculature ,030221 ophthalmology & optometry ,sense organs ,medicine.symptom ,OCTA ,business ,Tomography, Optical Coherence ,Anterior segment imaging ,Photopic vision - Abstract
Purpose: To assess the blood flow and vascular visibility of irises in relation to pigmentation and pupil size, using an anterior segment optical coherence tomography angiography (OCTA). Materials and methods: This is a cross-sectional study. OCTA images were acquired in the nasal and temporal quadrants from a cohort of 30 healthy subjects in photopic (miosis) and scotopic (mydriasis) conditions. Patients were divided according to iris color (less pigmented: group L vs more pigmented: group D). Vascular parameters (vessel density (VD), vessel length density (VLD), fractal dimension (FD)) were applied and compared among groups L and D, location and different pupil status. A novel vascular index called Luminance Index (LI) was developed and applied in order to quantify vascular flow and evaluate its variation in photopic and scotopic conditions. Multivariable analyses were performed to evaluate possible predictors of VD and LI. Results: No differences were found for all vascular measurements (VD, VDL, FD, LI) between nasal and temporal quadrants. All vascular measurements were higher in group L than in group D ( p Conclusions: Pigmentation still remains a major issue for vascular visibility. Quantitative and qualitative vascular changes follow pupil size variation. LI could be a new surrogate to quantify blood flow.
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- 2021
31. Which Explanatory Variables Contribute to the Classification of Good Visual Acuity over Time in Patients with Branch Retinal Vein Occlusion with Macular Edema Using Machine Learning?
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Yoshitsugu Matsui, Kazuya Imamura, Shinichiro Chujo, Yoko Mase, Hisashi Matsubara, Masahiko Sugimoto, Hiroharu Kawanaka, and Mineo Kondo
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optical coherence tomography ,branch retinal vein occlusion ,fovea ,macular ,logistic regression ,machine learning ,clinical prediction models ,General Medicine - Abstract
This study’s goal is to determine the accuracy of a linear classifier that predicts the prognosis of patients with macular edema (ME) due to a branch retinal vein occlusion during the maintenance phase of antivascular endothelial growth factor (anti-VEGF) therapy. The classifier was created using the clinical information and optical coherence tomographic (OCT) findings obtained up to the time of the first resolution of ME. In total, 66 eyes of 66 patients received an initial intravitreal injection of anti-VEGF followed by repeated injections with the pro re nata (PRN) regimen for 12 months. The patients were divided into two groups: those with and those without good vision during the PRN phase. The mean AUC of the classifier was 0.93, and the coefficients of the explanatory variables were: best-corrected visual acuity (BCVA) at baseline was 0.66, BCVA at first resolution of ME was 0.51, age was 0.21, the average brightness of the ellipsoid zone (EZ) was −0.12, the intactness of the external limiting membrane (ELM) was −0.14, the average brightness of the ELM was −0.17, the brightness value of EZ was −0.17, the area of the outer segments of the photoreceptors was −0.20, and the intactness of the EZ was −0.24. This algorithm predicted the prognosis over time for individual patients during the PRN phase.
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- 2022
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32. Transient Increase of Flicker Electroretinography Amplitudes after Cataract Surgery: Association with Postoperative Inflammation
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Kumiko, Kato, Ryunosuke, Nagashima, Hisashi, Matsubara, Kengo, Ikesugi, Hideyuki, Tsukitome, Yoshitsugu, Matsui, Takayasu, Nunome, Masahiko, Sugimoto, Daphne L, McCulloch, and Mineo, Kondo
- Abstract
To determine the characteristics and cause of the increase in the amplitude of flicker electroretinography (ERG) after cataract surgery.Prospective, observational clinical study.Thirty patients who underwent cataract surgery.Flicker ERGs were recorded with the RETeval system without mydriasis. The central macular thickness (CMT) was measured by OCT and the aqueous flare value (AFV) by laser flare-cell photometry. These examinations were performed before surgery and 1 day, 1 week, 1 month, 2 months, and 3 months after surgery. Linear regression analysis through the origin was used to compare the correlations between the relative changes in flicker ERG amplitudes and the changes in the CMT and AFV at different times after the surgery.The amplitude of flicker ERGs, CMT, and AFV.The mean amplitude of flicker ERGs increased significantly by 31% at 1 week after surgery (These results suggest that the increase in the amplitude of flicker ERGs after cataract surgery is a transient phenomenon that has a peak at 1 week after surgery. The increase of flicker ERG amplitude was associated with measures that are frequently used to evaluate postoperative inflammation.Proprietary or commercial disclosure may be found after the references.
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- 2022
33. Efficacy of Psychiatric Treatment to Treat a Specific Phobia of Intravitreal Injections in a Patient with Neovascular Age-Related Macular Degeneration
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Masahiko Sugimoto, Atsuta Ozaki, Hisashi Matsubara, Takashi Shiroyama, Mineo Kondo, and Manami Kuze
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medicine.medical_specialty ,Specific phobia ,Cognitive-behavioral therapy ,genetic structures ,medicine.medical_treatment ,High anxiety ,Case Report ,01 natural sciences ,behavioral disciplines and activities ,03 medical and health sciences ,Retinal angiomatous proliferation ,0302 clinical medicine ,lcsh:Ophthalmology ,Intravitreal injection ,Ophthalmology ,Age related ,mental disorders ,medicine ,0101 mathematics ,Macular edema ,medicine.diagnostic_test ,business.industry ,Psychiatric treatment ,010102 general mathematics ,Macular degeneration ,Fluorescein angiography ,medicine.disease ,Cognitive behavioral therapy ,Psychiatric consultation ,lcsh:RE1-994 ,030221 ophthalmology & optometry ,business - Abstract
Intravitreal injection of anti-vascular endothelial growth factor (anti-VEGF) is essential for the treatment of macular diseases such as wet age-related macular degeneration and macular edema. Although continued treatment is needed to maintain good vision, some patients cannot continue such injections for various reasons, including specific phobias. Here, we report a case of a patient with a specific phobia of intravitreal injections who could resume treatment after undergoing combined drug and cognitive-behavioral therapy (CBT). A 74-year-old Japanese man diagnosed with retinal angiomatous proliferation by fluorescein angiography and indocyanine green angiography was treated with intravitreal anti-VEGF injection. However, at 8 months after the first treatment, he became difficult to treat because of a phobia of injections. He was treated with photodynamic therapy, but his macular edema did not improve. After a psychiatric consultation, he was diagnosed with a specific phobia of intravitreal injections. Combined drug and CBT enabled him to resume receiving intravitreal injections. This case demonstrates that a specific phobia of intravitreal injections may benefit from combined drug and CBT. In this regard, some patients with high anxiety and fear of intravitreal injections should be referred to a psychiatrist at an early stage.
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- 2021
34. A multicentre study of the risk factors associated with recurrence of central serous chorioretinopathy
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Xiaoyin Zhou, Yuki Komuku, Takashi Araki, Kenta Hozumi, Hiroto Terasaki, Akiko Miki, Soichiro Kuwayama, Masanori Niki, Hisashi Matsubara, Takamasa Kinoshita, Tomo Nishi, and Fumi Gomi
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Male ,Adult ,Choroid ,General Medicine ,Middle Aged ,Fluoresceins ,Ophthalmology ,Central Serous Chorioretinopathy ,Risk Factors ,Humans ,Female ,Fluorescein Angiography ,Tomography, Optical Coherence ,Aged ,Retrospective Studies - Abstract
To investigate potential clinical and multimodal imaging factors in central serous chorioretinopathy (CSC) recurrence.The study was performed at nine Japanese medical institutions for patients who had experienced an active CSC episode. Demographic data and medical history were reviewed retrospectively. Significant differences in chronic manifestation, leakage site, leakage point number, leakage intensity, choroidal hyperpermeability, central retinal thickness (CRT) and subfoveal choroidal thickness were analysed between the recurrence and non-recurrence groups.In total, 538 eyes (538 patients) diagnosed with CSC (402 men, 136 women; mean age: 53.4 ± 11.9 years) were enrolled. Among them, 253 eyes (47.0%) developed ≥1 recurrence (follow-up: 15.9 ± 13.5 months, range 3-86 months). Univariate and multivariate analyses indicated that a history of corticosteroid use (odds ratio [OR], 5.52; 95% confidence interval [CI], 1.39-21.92; p = 0.015), bilateral disease (OR, 3.94; 95% CI, 1.47-10.6; p = 0.007), chronic manifestations (OR, 7.12; 95% CI, 2.93-17.28; p 0.001), non-intense fluorescein leakage (OR, 3.34; 95% CI, 1.44-7.75; p = 0.005) and initial CRT (OR, 0.997; 95% CI, 0.993-0.999; p = 0.049) were significantly associated with CSC recurrence. Receiver operating characteristic curves were created, and the area under the curve for the multivariate logistic regression model of these five factors was 0.814.Patients with CSC who received corticosteroids and had bilateral disease, chronic manifestation, non-intense fluorescein leakage on fluorescein angiography or a relatively thinner CRT should be closely monitored to identify whether they are at high risk of recurrence.
- Published
- 2022
35. Ten-year changes in visual acuity at baseline and at 2 years after treatment in a Japanese population with age-related macular degeneration
- Author
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Yoshinori Mitamura, Jiro Kogo, Tsutomu Yasukawa, Hiroko Imaizumi, Tomoko Sawada, Kazuhiro Kimura, Hisashi Matsubara, Masaru Takeuchi, Yoshihiro Takamura, Tomoya Murakami, Hiroto Terasaki, Toshinori Murata, Hiroto Ishikawa, Mariko Yamashita, and Masahito Ohji
- Subjects
Vascular Endothelial Growth Factor A ,medicine.medical_specialty ,Visual acuity ,genetic structures ,VEGF receptors ,Visual Acuity ,Angiogenesis Inhibitors ,Photodynamic therapy ,Macular Degeneration ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,0302 clinical medicine ,Japan ,Ranibizumab ,Age related ,Ophthalmology ,Humans ,Initial treatment ,Medicine ,In patient ,030212 general & internal medicine ,skin and connective tissue diseases ,Anti-vascular endothelial growth factor ,Retrospective Studies ,biology ,business.industry ,Age-related macular degeneration ,Macular degeneration ,Japanese population ,medicine.disease ,eye diseases ,Sensory Systems ,Treatment Outcome ,Intravitreal Injections ,030221 ophthalmology & optometry ,biology.protein ,J-CREST Study group ,sense organs ,Baseline visual acuity ,medicine.symptom ,business ,Tomography, Optical Coherence ,After treatment - Abstract
Purpose: We investigated 10-year changes in baseline best-corrected visual acuity (BCVA), as well as functional and anatomical changes at 1 and 2 years after initial treatment, in eyes with treatment-naïve neovascular age-related macular degeneration (nAMD)., Methods:This retrospective, multicenter, case series reviewed patients with treatment-naïve nAMD who underwent initial treatment from 2006 to 2015, using photodynamic therapy (PDT), anti-vascular endothelial growth factor (VEGF), or a combination of PDT and anti-VEGF. BCVA and central retinal subfield thickness (CRST), were measured at baseline and at 1 or 2 years of follow-up., Results:In total, 3096 eyes of 3096 patients were included from 14 hospitals. Mean BCVA at baseline became significantly better over the 10-year study period (P < 0.001). BCVA at 1 year significantly improved from baseline in patients who underwent initial treatment from 2009 to 2015 (P = 0.001, 2009; P = 0.004, 2010; P = 0.01, 2011; P < 0.001, 2012-2015). BCVA at 2 years significantly improved from baseline in patients who underwent initial treatment from 2012 to 2015 (P < 0.001, 2012; P < 0.001, 2013-2015). CRST at 1 year decreased significantly from CRST at baseline, each year from 2006 to 2015 (P < 0.001, 2006-2015). CRST at 2 years decreased significantly from CRST at baseline, each year from 2006 to 2015 (P = 0.03, 2006; P < 0.001, 2007-2015)., Conclusion:Baseline BCVA with treatment-naïve nAMD tended to become better during the study period. BCVA at 1 year improved in the era of anti-VEGF; BCVA at 2 years improved in patients who underwent initial treatment in 2012 or later; and CRST decreased in each year during the study period.
- Published
- 2020
36. Effects of recording sequence on flicker electroretinographics recorded with natural pupils corrected for pupil area
- Author
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Asako Sugawara, Hisashi Matsubara, Mineo Kondo, Kumiko Kato, Ryunosuke Nagashima, Kengo Ikesugi, Daphne L. McCulloch, and Masahiko Sugimoto
- Subjects
Adult ,Male ,medicine.medical_specialty ,Pupil diameter ,fundamental component ,Visual Acuity ,flicker ERG ,Audiology ,Stimulus (physiology) ,Pupil ,Retina ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Mydriasis ,Medicine ,Humans ,Prospective Studies ,business.industry ,Flicker ,General Medicine ,Original Articles ,RETeval ,Recording system ,Middle Aged ,pupil diameter ,implicit times ,Ophthalmology ,030221 ophthalmology & optometry ,Original Article ,Female ,medicine.symptom ,business ,Erg ,030217 neurology & neurosurgery ,Photic Stimulation ,Photopic vision - Abstract
Background A new handheld electroretinographic (ERG) recording system can record ERGs without mydriasis. However, this RETeval system cannot record ERGs from both eyes simultaneously. Thus, the purpose of this study was to determine whether the sequence of the ERG recordings will alter the results. Methods We studied 30 eyes of 30 healthy subjects. The flicker ERGs were recorded with the RETeval system without mydriasis and were elicited by 8, 16 and 32 photopic Td‐s. The flicker ERGs were recorded at two sessions. Session 1, the ERGs were recorded from the right eye and then the left eye, and Session 2, ERGs were recorded from the left eye then the right eye. We compared the implicit times, amplitudes and pupil diameters of the right eye between these two sessions. Results The implicit time of the flicker ERGs was significantly shorter (p
- Published
- 2020
37. Effectiveness of Ripasudil, a Rho-Associated Coiled/Coil-Containing Protein Kinase Inhibitor, in Improving Retinoschisis and Cystic-Like Foveal Cavities in Eyes with X-Linked Retinoschisis
- Author
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Mineo Kondo, Hisashi Matsubara, Hitomi Suimon, and Masahiko Sugimoto
- Subjects
medicine.medical_specialty ,genetic structures ,medicine.drug_class ,retinoschisis ,Retinoschisis ,Case Report ,chemistry.chemical_compound ,lcsh:Ophthalmology ,Foveal ,Chart review ,Ophthalmology ,medicine ,ripasudil hydrochloride hydrate ,business.industry ,x-linked retinoschisis ,cystic-like foveal cavities ,Treatment options ,Protein kinase inhibitor ,medicine.disease ,rho-associated coiled/coil-containing protein kinase inhibitor ,eye diseases ,chemistry ,lcsh:RE1-994 ,X-linked retinoschisis ,sense organs ,Ripasudil ,business ,After treatment - Abstract
This is the first reported case of a successful resolution of cystic-like foveal cavities in eyes with X-linked juvenile retinoschisis (XLRS) treated with topical ripasudil hydrochloride hydrate, a Rho-associated coiled/coil-containing protein kinase (ROCK) inhibitor. A chart review was performed on 1 patient to collect all relevant clinical information and the optical coherence tomographic (OCT) images. A healthy 18-year-old young man presented with bilateral visual disturbances. The patient was diagnosed with XLRS from the spoke-wheel pattern around the macula, negative electroretinograms, and retinoschisis with cystic-like foveal cavities in the OCT images. Significant reductions of the retinoschisis and cystic-like cavities were observed after treatment with topical ripasudil. This is the first case of XLRS that had a resolution of cystic-like foveal cavities after topical ripasudil, a ROCK inhibitor. Since many XLRS patients have a worsening of their visual acuities due to the progressive nature of retinoschisis and cystic-like foveal cavities, topical ripasudil offers a potential treatment option.
- Published
- 2020
38. Misalignment of foveal pit and foveal bulge determined by ultrahigh-resolution SD-OCT in normal eyes
- Author
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Yoshitsugu Matsui, Eriko Uchiyama, Hisashi Matsubara, Ryohei Miyata, and Mineo Kondo
- Subjects
Fovea Centralis ,Refractive error ,medicine.medical_specialty ,Spectral domain ,050105 experimental psychology ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,0302 clinical medicine ,Foveal ,Bulge ,Ophthalmology ,Healthy volunteers ,Myopia ,medicine ,Humans ,0501 psychology and cognitive sciences ,Physics ,05 social sciences ,medicine.disease ,Healthy Volunteers ,Sensory Systems ,Ultrahigh resolution ,030221 ophthalmology & optometry ,Vertex (curve) ,Software ,Tomography, Optical Coherence - Abstract
The foveal bulge (FB) results from a lengthening of the outer segments of the photoreceptors which then makes the central fovea arcuate in shape. The purpose of this study was to evaluate the morphological features and locations of the FB relative to the foveal pit (FP) in a single B-scan image. One hundred and forty-seven eyes of 147 healthy volunteers were studied. Horizontal and vertical B-scan optical coherence tomographic (OCT) images through the fovea were recorded by an ultrahigh-resolution spectral domain OCT (UHR-SD-OCT) instrument (Bi-μ, KOWA, Japan). The vertex of the FB and the center of the FP were identified with the ImageJ software. The distance between the FB and FP and the height of the FB were measured. In the horizontal images, the vertex of the FB was on the nasal side of the center of the FP in 97 eyes (66%), on the temporal side in 42 eyes (29%), and the same position in 8 eyes (5%). In the vertical images, the vertex of the FB was superior to the center of the FP in 82 eyes (55%), inferior to the center of the FP in 45 eyes (31%), and the same position in 20 eyes (14%). The mean distance (± SD) between the FB and the FP was + 16.8 ± 30.1 μm in the horizontal images and + 8.27 ± 28.0 μm in the vertical images. The mean height (± SD) of the FB was 77.0 ± 4.78 μm in the horizontal images and 77.9 ± 5.05 μm in the vertical images. The height of the FB in the horizontal images was significantly correlated with refractive error in the multiple regression analysis (P = 0.041). These results indicate that the vertex of the FB was not aligned with the center of the FP in the majority of the eyes of normal Japanese individuals in a single B-scan image. Analysis showed that eyes with less severe myopia had the higher height of the FB. This must be considered when interpreting the location of the vertex of the FB and the center of the FP in clinical situations.
- Published
- 2020
39. Multiple evanescent white dot syndrome in highly myopic eye in which fundus autofluorescence was diagnostically useful: A case report
- Author
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Sumine Harada, Kumiko Kato, Yoshitsugu Matsui, Masahiko Sugimoto, Hisashi Matsubara, and Mineo Kondo
- Subjects
General Medicine - Published
- 2023
40. Case of cystoid macular edema induced by systemic administration of paclitaxel: evaluations with electroretinograms
- Author
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Mineo Kondo, Hisashi Matsubara, Kumiko Kato, Ryunosuke Nagashima, Masahiko Sugimoto, and Kengo Ikesugi
- Subjects
Male ,medicine.medical_specialty ,genetic structures ,Paclitaxel ,Visual Acuity ,Macular Edema ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Blurred vision ,Physiology (medical) ,Ophthalmology ,medicine ,Adjuvant therapy ,Electroretinography ,Humans ,Fluorescein Angiography ,Macular edema ,Aged ,Retina ,business.industry ,Retinal ,medicine.disease ,eye diseases ,Sensory Systems ,Discontinuation ,Contact lens ,medicine.anatomical_structure ,chemistry ,030221 ophthalmology & optometry ,sense organs ,medicine.symptom ,business ,030217 neurology & neurosurgery ,Tomography, Optical Coherence - Abstract
To report abnormal full-field electroretinograms (ERGs) in a patient with cystoid macular edema (CME) induced by systemic paclitaxel. This is an observational case report. Full-field ERGs were recorded to evaluate the retinal function using the RETeval system and conventional ERGs using contact lens electrodes with built-in white light-emitting diodes. Optical coherence tomography (OCT) was also used to assess the retinal morphology. A 70-year-old man, who was diagnosed with gastric cancer, had undergone gastrectomy. Subsequently, systemic paclitaxel was administered once a week as an adjuvant therapy. After the tenth course of paclitaxel, he experienced blurred vision in both eyes and visited our department of ophthalmology. OCT revealed the presence of CME in both eyes, and the RETeval flicker ERGs showed a marked reduction in the amplitudes and a prolongation of the implicit times in both eyes. Conventional ERGs showed that the amplitudes of the oscillatory potentials (OPs) were also severely attenuated. The abnormal OCT findings and reduced visual acuity recovered to normal at 1 and 2 months, respectively, after the discontinuation of paclitaxel. However, the flicker ERGs did not recover to normal values until 4 months after the discontinuation of paclitaxel. These results suggest that the ERGs can be used to monitor the changes in the overall retinal function in patients receiving paclitaxel.
- Published
- 2021
41. Fabrication technique of obturator-type sports mouthguard for a patient who had undergone maxillectomy and its speech intelligibility assessment:A case report
- Author
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Hiroshi Churei, Hisashi Matsubara, Abhishekhi Shrestha, Takafumi Otomaru, Toshiaki Ueno, Ruman Uddin Chowdhury, Kairi Hayashi, Tatsu Suzuki, Nafees Uddin Chowdhry, and Yuka I. Sumita
- Subjects
medicine.medical_specialty ,Basketball ,business.product_category ,Oral appliance ,0206 medical engineering ,Football ,American football ,Personal Satisfaction ,02 engineering and technology ,03 medical and health sciences ,0302 clinical medicine ,Swallowing ,Humans ,Medicine ,Dentistry (miscellaneous) ,Mouthguard ,Dental injury ,business.industry ,Speech Intelligibility ,030206 dentistry ,020601 biomedical engineering ,Physical therapy ,Mouth Protectors ,Oral Surgery ,business ,human activities - Abstract
Purpose Wearing a sports mouthguard is not only recommended in collision sports, such as American football, boxing, and rugby football, but also in low-contact sports, such as basketball, handball, and soccer. It is recommended to remove oral prosthetic devices while playing sports to avoid the risk of fracturing the device. However, players with maxillectomy must wear obturator-type prosthetic devices for speech, breathing, and deglutition even while playing sports. Therefore, there is a need for an oral appliance to prevent dental injury while playing sports without the risk of fracturing the device for players who have undergone maxillectomy.In this case, we fabricated and proposed overlay-type and obturator-type customized sports mouthguards for a patient who had undergone maxillectomy and assessments of satisfaction, speech intelligibility, nasopharyngeal closure function, and swallowing function while playing soccer. Results The patient was only satisfied with the obturator-type mouthguard, and the results of the speech intelligibility, nasopharyngeal closure function, and swallowing tests using the obturator-type mouthguard showed no differences compared to those associated with the previously used prosthetic device. Conclusions This case may help highlight the importance of providing obturator-type mouthguards for players who have undergone maxillectomy to prevent dental injury and physical and mental discomfort.
- Published
- 2021
42. Comparison of 2-Year Outcomes between Intravitreal Ranibizumab and Intravitreal Aflibercept for Diabetic Macular Edema with 'Treat-and-Extend' Regimen—Its Usefulness and Problems
- Author
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Hisashi Matsubara, Atsushi Ichio, Ryohei Miyata, Masahiko Sugimoto, Shinichiro Chujo, Mineo Kondo, Kumiko Kato, Taku Sasaki, and Yoshitsugu Matsui
- Subjects
medicine.medical_specialty ,Visual acuity ,genetic structures ,Diabetic macular edema ,lcsh:Medicine ,Article ,03 medical and health sciences ,0302 clinical medicine ,Ophthalmology ,medicine ,ranibizumab ,treat-and-extend regimen ,030304 developmental biology ,Aflibercept ,0303 health sciences ,business.industry ,aflibercept ,lcsh:R ,Retrospective cohort study ,General Medicine ,Diabetic retinopathy ,medicine.disease ,eye diseases ,Regimen ,030221 ophthalmology & optometry ,sense organs ,Intravitreal ranibizumab ,Ranibizumab ,medicine.symptom ,business ,diabetic macular edema ,medicine.drug - Abstract
Background: To compare the effectiveness of intravitreal ranibizumab (IVR) and intravitreal aflibercept (IVA) performed with the treat-and-extend (TAE) regimen on eyes with diabetic macular edema (DME). Patients and methods: This is a retrospective study of 125 eyes of 125 treatment-naï, ve DME patients who received anti-VEGF injections at three consecutive monthly intervals as the loading phase. The changes in the best-corrected visual acuity (BCVA), central retinal thickness (CRT), diabetic retinopathy severity scale (DRSS), and total injection numbers were compared between the two anti-VEGF agents. Results: Among 125 eyes, 26 eyes completed the treatment with the TAE regimen for 24 months (20.8%). Thirteen eyes of 13 patients (mean age, 70.9 ±, 6.0 years) received intravitreal injections of 0.5 mg ranibizumab, and 13 eyes of 13 patients (65.9 ±, 8.6 years) received 2 mg aflibercept. No significant differences were detected in the baseline demographics. At 24 months, BCVA was significantly improved in both groups, from 0.31 ±, 0.19 to 0.10 ±, 0.12 logMAR units for IVR and 0.41 ±, 0.19 to 0.16 ±, 0.28 logMAR units for IVA (p = 1.29 ×, 10&minus, 9). CRT was significantly reduced in both groups, 440.9 ±, 69.3 to 307.5 ±, 66.4 &mu, m for IVR and 473.9 ±, 71.5 to 317.8 ±, 71.2 &mu, m for IVA (p = 3.55 ×, 9). No significant differences were detected in the improvements of BCVA, CRT in both groups, and the total injection numbers for 24 months (11.0 ±, 1.2 for the IVA group and 12.0 ±, 1.0 the IVR group). DRSS was significantly improved in both groups (p = 0.0004 for IVR and p = 0.009 for IVA). Conclusion: No significant differences were detected in the improvements of BCVA or CRT and injection numbers between the IVR and IVA groups treated with the TAE regimen. These results indicate that the results of the treatment with both agents with the TAE regimen were equally effective, but only 20.8% of patients completed 24 months of continuous treatment with the TAE regimen. Synopsis: There are no significant differences regarding effectiveness between the IVR and IVA groups treated with the TAE regimen for DME eyes.
- Published
- 2020
43. Cerebral trauma-induced dyschromatopsia in the left hemifield: case presentation
- Author
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Hisashi Matsubara, Akiko Kubo, Eriko Uchiyama, Masahiko Sugimoto, Yoko Mase, Mineo Kondo, and Yoshitsugu Matsui
- Subjects
Adult ,medicine.medical_specialty ,genetic structures ,Color vision ,Cerebral dyschromatopsia ,Color Vision Defects ,Case Report ,Temporal lobe ,Lingual gyrus ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,lcsh:Ophthalmology ,Ophthalmology ,Retrograde transsynaptic degeneration ,Medicine ,Humans ,GCC thinning ,Quadrantanopia ,Dyschromatopsia ,Visual agnosia ,Fusiform gyrus ,business.industry ,SWAP ,General Medicine ,medicine.disease ,Magnetic Resonance Imaging ,Visual field ,Acquired cerebral color anomaly ,Prosopagnosia ,Hemilateral dyschromatopsia ,lcsh:RE1-994 ,030221 ophthalmology & optometry ,Female ,Occipital Lobe ,Visual Fields ,business ,030217 neurology & neurosurgery - Abstract
Background Acquired color anomalies caused by cerebral trauma are classified as either achromatopsias or dyschromatopsias (Zeki, Brain 113:1721–1777, 1990). The three main brain regions stimulated by color are V1, the lingual gyrus, which was designated as human V4 (hV4), and the fusiform gyrus, designated as V4α. (Zeki, Brain 113:1721–1777, 1990). An acquired cerebral color anomaly is often accompanied by visual field loss (hemi- and quadrantanopia), facial agnosia, prosopagnosia, visual agnosia, and anosognosia depending on the underlying pathology (Bartels and Zeki, Eur J Neurosci 12:172–193, 2000), (Meadows, Brain 97:615–632, 1974), (Pearman et al., Ann Neurol 5:253–261, 1979). The purpose of this study was to determine the characteristics of a patient who developed dyschromatopsia following a traumatic injury to her brain. Case presentation The patient was a 24-year-old woman who had a contusion to her right anterior temporal lobe. After the injury, she noticed color distortion and that blue objects appeared green in the left half of the visual field. Although conventional color vision tests did not detect any color vision abnormalities, short wavelength automated perimetry (SWAP) showed a decrease in sensitivity consistent with a left hemi-dyschromatopsia. Magnetic resonance imaging (MRI) detected abnormalities in the right fusiform gyrus, a part of the anterior temporal lobe. At follow-up 14 months later, subjective symptoms had disappeared, but the SWAP abnormalities persisted and a thinning of the sectorial ganglion cell complex (GCC) was detected. Conclusion The results indicate that although the subjective symptoms resolved early, a reduced sensitivity of SWAP remained and the optical coherence tomography (OCT) showed GCC thinning. We conclude that local abnormalities in the anterior section of fusiform gyrus can cause mild cerebral dyschromatopsia without other symptoms. These findings indicate that it is important to listen to the symptoms of the patient and perform appropriate tests including the SWAP and OCT at the early stage to objectively prove the presence of acquired cerebral color anomaly.
- Published
- 2020
44. Case of lens-induced uveitis associated with supernormal flicker ERG amplitudes after cataract surgery
- Author
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Mineo Kondo, Masahiko Sugimoto, Ryunosuke Nagashima, Hisashi Matsubara, Asako Sugawara, Kengo Ikesugi, Kumiko Kato, and Maki Takeuchi
- Subjects
Male ,medicine.medical_specialty ,genetic structures ,medicine.medical_treatment ,Cataract Extraction ,Cataract ,Uveitis ,03 medical and health sciences ,0302 clinical medicine ,Optical coherence tomography ,Transcriptional Regulator ERG ,Lens-induced uveitis ,Physiology (medical) ,Ophthalmology ,medicine ,Electroretinography ,Humans ,Macular edema ,Aged ,medicine.diagnostic_test ,business.industry ,Flicker ,Cataract surgery ,medicine.disease ,eye diseases ,Sensory Systems ,medicine.anatomical_structure ,Lens (anatomy) ,030221 ophthalmology & optometry ,sense organs ,business ,Erg ,030217 neurology & neurosurgery ,Tomography, Optical Coherence - Abstract
To report our findings in a case of lens fragment-induced uveitis associated with supernormal flicker electroretinograms (ERGs) twenty months after the cataract surgery. This is an observational case report. Full-field flicker ERGs were recorded with the RETeval system. Optical coherence tomography (OCT) and slit-lamp biomicroscopy were used to assess the uveitis during the follow-up period. A 70-year-old man, who had undergone cataract surgery 20 months earlier, visited our hospital with a complaint of decreased vision in his right eye. Slit-lamp biomicroscopy revealed corneal edema and a lens fragment was detected in the inferior part of the anterior chamber. OCT showed cystoid macular edema, and flicker ERGs showed a marked increase in the amplitude and a delay in the implicit time in the right eye. These abnormalities of the flicker ERGs improved gradually after the removal of lens fragment and application of topical anti-inflammatory medications. Our case of lens-induced uveitis had supernormal flicker ERG amplitudes. Clinicians should be aware that eyes with uveitis can have larger-than-normal ERG amplitudes.
- Published
- 2020
45. Correction to: Classification of good visual acuity over time in patients with branch retinal vein occlusion with macular edema using support vector machine
- Author
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Yoshitsugu Matsui, Kazuya Imamura, Mihiro Ooka, Shinichiro Chujo, Yoko Mase, Hisashi Matsubara, Hiroharu Kawanaka, and Mineo Kondo
- Subjects
Cellular and Molecular Neuroscience ,Ophthalmology ,Sensory Systems - Published
- 2022
46. The Handling of High Freshness Freezing Mackerel Providing Safe and Delicious Sashimi, a Grilled Fish
- Author
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Tadashi Takahashi, Ken-ichi Kudoh, Hisashi Matsubara, Gou Kimura, and Megumi Takeuchi
- Subjects
0106 biological sciences ,biology ,Mackerel ,Cold storage ,Raw fish ,04 agricultural and veterinary sciences ,biology.organism_classification ,Fish products ,040401 food science ,01 natural sciences ,Aquatic organisms ,0404 agricultural biotechnology ,010608 biotechnology ,Environmental science ,%22">Fish ,Food science ,Frozen storage ,Food Science - Published
- 2018
47. New clinical ultrahigh-resolution SD-OCT using A-scan matching algorithm
- Author
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Mineo Kondo, Hisashi Matsubara, Yoshitsugu Matsui, Ryohei Mityata, and Eriko Uchiyama
- Subjects
Adult ,Male ,genetic structures ,Computer science ,Spectral domain ,01 natural sciences ,Retina ,010309 optics ,Young Adult ,03 medical and health sciences ,Cellular and Molecular Neuroscience ,0302 clinical medicine ,Optical coherence tomography ,0103 physical sciences ,medicine ,Humans ,Computer vision ,Blossom algorithm ,medicine.diagnostic_test ,business.industry ,Resolution (electron density) ,Visibility (geometry) ,Middle Aged ,Image Enhancement ,Reflectivity ,Healthy Volunteers ,eye diseases ,Sensory Systems ,Ophthalmology ,Ultrahigh resolution ,030221 ophthalmology & optometry ,Female ,sense organs ,Artificial intelligence ,business ,Algorithms ,Tomography, Optical Coherence - Abstract
A new clinical ultrahigh-resolution spectral domain optical coherence tomography (UHR-SD-OCT) system using an original averaging technique named “A-scan matching algorithm” was developed. The aim of this study was to determine whether our new UHR-SD-OCT system can obtain clearer sectional images of the retina than conventional standard resolution SD-OCT systems (SR-SD-OCT). We recorded horizontal B-scan images of 42 normal eyes using our new UHR-SD-OCT device (Bi-μ, Kowa) and a conventional SR-SD-OCT (Spectralis, Heidelberg). To evaluate the clarity of the interdigitation zone (IZ) subjectively, the integrity of IZ was divided into three types by two raters. To evaluate the clarity of the IZ objectively, a peak height score (PHS) was calculated at five different points of the macula using the longitudinal reflectivity profile. The mean (± SD) of the subjective visibility score of the IZ in the UHR-SD-OCT images was 2.64 ± 0.54 which was significantly higher than the 2.46 ± 0.46 in the SR-SD-OCT images (P = 0.02). The PHS was also significantly higher for the UHR-SD-OCT than for the SR-SD-OCT images at all five locations (all P
- Published
- 2018
48. A Case of Focal Choroidal Excavation Development Associated with Multiple Evanescent White Dot Syndrome
- Author
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Katsuya Suzuki, Yoshito Matsuda, Mineo Kondo, Hisashi Matsubara, and Eriko Uchiyama
- Subjects
medicine.medical_specialty ,genetic structures ,Multiple evanescent white dot syndrome ,Posterior pole ,Case Report ,Lesion ,03 medical and health sciences ,0302 clinical medicine ,lcsh:Ophthalmology ,Optical coherence tomography ,Ophthalmology ,medicine ,Retina ,Retinal pigment epithelium ,medicine.diagnostic_test ,business.industry ,Choroidal excavation ,medicine.disease ,eye diseases ,medicine.anatomical_structure ,Choroidal thickness ,lcsh:RE1-994 ,030221 ophthalmology & optometry ,sense organs ,Choroid ,medicine.symptom ,business ,030217 neurology & neurosurgery - Abstract
Focal choroidal excavation (FCE) is described as an excavated lesion of the choroid that can be detected by optical coherence tomography (OCT). While the exact pathogenesis of FCE remains unclear, it has been proposed in some cases that there is an association with the inflammation in the outer retina. We present a case of FCE development that was detected by spectral domain OCT (SD-OCT) and found to be associated with multiple evanescent white dot syndrome (MEWDS). A 40-year-old Japanese woman was diagnosed with MEWDS based on multiple white dots observed from the posterior pole to the midperiphery, along with yellow granularity in the fovea. SD-OCT revealed separation between the retinal pigment epithelium (RPE) and Bruch’s membrane (BM) and discontinuations of the ellipsoid zone, RPE, and BM. At 4 weeks after onset, several of the white dots disappeared, the yellow granularity in the fovea became small, and we detected nonconforming choroidal excavation under the central fovea. The choroidal excavation gradually deepened and changed to a conforming pattern. These findings suggest that the degree of the impairment caused by inflammation and the plasticity of the BM and RPE complex may be associated with different types of acquired FCE.
- Published
- 2018
49. Trends in the Prevalence and Progression of Diabetic Retinopathy Associated with Hyperglycemic Disorders during Pregnancy in Japan
- Author
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Masahiko, Sugimoto, Kohei, Sampa, Hideyuki, Tsukitome, Kumiko, Kato, Hisashi, Matsubara, Shin, Asami, Kaori, Sekimoto, Shigehiko, Kitano, Shigeo, Yoshida, Yoshihiro, Takamura, Takao, Hirano, Toshinori, Murata, Miho, Shimizu, Takamasa, Kinoshita, Sentaro, Kusuhara, Osamu, Sawada, Masahito, Ohji, Rina, Yoshikawa, Kazuhiro, Kimura, Hiroto, Ishikawa, Fumi, Gomi, Hiroto, Terasaki, Mineo, Kondo, Tomoaki, Ikeda, and On Behalf Of The Writing Committee Of Japan-Clinical Retina STudy Group J-Crest
- Subjects
Medicine ,gestational diabetes mellitus ,hyperglycemic disorders during pregnancy ,overt diabetes mellitus ,pre-existing diabetes mellitus ,General Medicine ,Article - Abstract
The aim of this study was to determine the prevalence and progression of diabetic retinopathy (DR) with hyperglycemic disorders during pregnancy (HDPs) in Japan between 2013 and 2018 using two cohorts. The patients with HDPs were classified as those with pre-existing DM (pexD), gestational DM (GDM), and overt DM (ODM). Cohort 1 was obtained from the health claims database whose diseases were classified by the International Classification of Diseases-10. Cohort 2 was derived from a retrospective, multicenter analysis of the medical records of 225 patients from 10 ophthalmological institutions. In Cohort 1, there were 5268 patients with an HDP prevalence of 8.4%. Among them, 73 of 1139 patients had pexD (6.4%) and 61 of 4129 patients with GDM (1.5%) had DR; the overall prevalence of DR was 2.5%. In Cohort 2, 36 of 225 patients (16.0%) had DR, and 149 patients were followed at the early and late stages of pregnancy. Moreover, 10 of the 102 patients with pexD (9.8%) and two of five patients with ODM (40.0%) had a progression of DR. In conclusion, the prevalence and progression of DR in patients with pexD is lower than previously reported. More attention should be given to pexD and ODM.
- Published
- 2021
50. Effectiveness of microperimetry in evaluating anti-vascular endothelial growth factor therapy for diabetic macular edema patients with relatively good vision
- Author
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Masahiko Sugimoto, Yasuko Wakamatsu, Ryohei Miyata, Kumiko Kato, Hisashi Matsubara, and Mineo Kondo
- Subjects
General Medicine - Published
- 2021
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