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Copyright of Anatolian Clinic Journal of Medical Sciences is the property of Hayat Saglik ve Sosyal Hizmetler Vakfi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Medical Journal of Bakirkoy is the property of Galenos Yayinevi Tic. LTD. STI and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: The effects of metabolic changes on neural structures in the later stages of schizophrenia remain unknown. Alterations in glucose and lipid metabolism could impact disease progression. This study aims to investigate the effects of glucose and lipid metabolism on neuronal structures in treatment-resistant schizophrenia using optical coherence tomography (OCT), glycogenic proteins, and cholesterol values. Method: The study included 39 schizophrenia patients with remission, 43 treatment-resistant schizophrenia (TRS) patients, and 40 healthy controls (HC). Optical coherence tomography (OCT) was performed on all participants. Serum samples were collected to determine fasting glucose, Low-Density Lipoprotein (LDL), High-Density Lipoprotein (HDL), triglycerides, total cholesterol, fasting insulin, and Insulin-like Growth Factor 1 (IGF-1) levels. Results: IGF-1 levels in TRS patients were higher than those in the remission group. Additionally, the thickness of the inferior retinal nerve fiber layer (RNFL), superior RNFL, and global RNFL regions was significantly lower in the TRS group than in the HC group. Conclusion: While OCT measurements and elevated IGF-1 levels indicate neural thinning in treatment-resistant schizophrenia, there was no observed effect from lipid and glucose metabolism on this phenomenon. [ABSTRACT FROM AUTHOR]

Objectives: The aim of the study was comparison of wet-type age-related macular degeneration in phakic and pseudophakic patients in terms of anatomical and functional success based on the real-life data of Türkiye. Methods: The multicenter retrospective real-life study data of the. retinal study group were used in this study. Among 867 eyes of 867 patients were included in the study. Patients were divided into two groups according to the status of the lens; phakic group and pseudophakic group. The follow-up period of the two groups, the number of injections at the 1st, 2nd, and 3rd years, and changes in the central macular thickness (CMT, μ) and visual acuity (VA, logMAR) of the patients at the beginning, 6th, 12th, 24th, and 36th months were examined. Results: In our study, the number of injections in the 1st, 2nd, and 3rd years, respectively, was 4.2±2.0, 1.8±1.9, and 1.0±1.7 in the phakic group, and 3.9±2.0, 1.7±1.9, and 0.8±1.4 in the pseudophakic group. When the two groups were compared in terms of the number of injections, there was a statistically significant difference in the 1st year, but there was no significant difference in the 2nd and 3rd years (p=0.001, p=0.350, and p=0.288, respectively). There was no statistically significantdifference between the groups in terms of CMT in the baseline, 6th, 12th, 24th, and 36th months (p=0.991, p=0.327, p=0.652, p=0.599, and p=0.873, respectively). Although there was no difference in VA between groups at the beginning (p=0.052), the phakic group showed statistically better VA in controls at 3rd, 6th, 12th, 24th, and 36th months (p=0.001, p=0.001, p=0.000, p=0.000, and p=0.003, respectively). Conclusion: Differences in the number of injections and visual results between phakic and pseudophakic patients in wet type AMD may necessitate the creation of different treatment and follow-up protocols. [ABSTRACT FROM AUTHOR]

Objectives: The aim of the study was to evaluate binocular vision after adult strabismus surgery and to investigate the predictive factors on improvement stereoacuity. Methods: Patients aged upper from 16 years who underwent strabismus surgery in our hospital reviewed retrospectively. Age, existence of amblyopia, pre-operative and postoperatively fusion ability, stereoacuity, and deviation angle were recorded. Patients were divided into two groups according to final stereoacuity; 200 sn/arc and lower: Good stereopsis (Group 1), upper 200 sn/arc: Poor stereopsis (Group 2). Characteristics were compared between groups. Results: A total of 49 patients, who were 16-56 years of age, were included in the study. The mean follow-up time was 37.8 months (range 12-72 months). Of patients, 26 had improvement in stereopsis scores after surgery (53.0%). Group 1 includes 200 sn/arc and lower (n=18, 36.7%) and Group 2 includes higher than 200 sn/arc (n=31, 63.3%). The presence of amblyopia and higher refraction error was frequent significantly in Group 2 (p=0.01 and p=0.02, respectively). The existence of fusion postoperatively was significantly frequent in Group 1 (p=0.02). Type of strabismus and the amount of deviation angle were not found in a relationship with good stereopsis. Conclusion: In adults, surgical correction of horizontal deviation improves stereoacuity. Having no amblyopia, having fusion after surgery, and low refraction error are predictive for the improvement in stereoacuity. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate the refractive precision of three‐piece versus one‐piece intraocular lenses (IOLs) in eyes with pseudoexfoliation (PXF) and changes in anterior chamber depth (ACD) following cataract surgery. Methods: This prospective, nonrandomized, interventional, comparative case series included PXF eyes, which were implanted with one‐piece acrylic IOL or three‐piece acrylic IOLs (Group A; n = 31, Group B; n = 30). Non‐PXF control eyes were implanted with one‐piece acrylic IOL (Group C; n = 30). Postoperative refractive error (RE) and absolute RE, as well as pre‐ to postoperative ACD changes, were statistically analysed. A p value < 0.05 was considered statistically significant. Results: Changes in ACD (mean ± standard deviation) in Groups A, B and C were 0.9 ± 0.4, 1.0 ± 0.3 and 0.7 ± 0.4 mm, respectively. Significant differences were found between Groups A and C (p = 0.043) and between Groups B and C (p = 0.008). In Groups A, B and C, the median and interquartile (Q1 to Q3) values were 0.3 (−0.8 to 1.0), −0.5 (−0.8 to −0.3) and 0.1 (−0.4 to 0.3) for RE and 1.0 (0.4 to 1.3), 0.5 (0.3 to 0.8) and 0.3 (0.3 to 0.5) for absolute RE, respectively. The RE differences between Group A and B (p = 0.009) and Group B and C (p < 0.001) were statistically significant. For absolute RE, the differences were significant for all comparisons (p < 0.05). Conclusion: Refractive precision in PXF eyes may be better with three‐piece than with one‐piece IOL implantation, but worse than with one‐piece IOL implantation in non‐PXF eyes. Significant changes in ACD in PXF eyes may be related to RE. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate the effects of a single dose of oral 5-mg tadalafil on macular microcirculation as measured using optical coherence tomography (OCT) and angiography (OCTA) in healthy volunteers. Methods: Twenty-two healthy, middle-aged, sexually active, and male health care worker volunteers were included in this prospective study. All volunteers have a history of occasionally using off-label 5 mg tadalafil to enhance sexual performance. Superficial and deep capillary plexus vascular densities, foveal avascular zone parameters, outer retina, and choriocapillaris flow areas were performed using the OCTA, and subfoveal-choroidal thickness (CT) was performed by using the OCT. Measurements were performed preintake, 30 min, 1, 4, 24 h, 2, 3, 4, and 7 days after the intake of tadalafil off-label. Results: Twenty-two eyes of 22 male volunteers were included in the study. The mean age was 37.16 ± 4.52 years. At 30 min, 1 h, and 4 h after intake, a statistically significant increase was observed in the choriocapillaris flow area and CT compared with preintake (Friedman test, P = 0.034 and P < 0.001, respectively). Conclusion: This study showed that a single dose of oral 5-mg tadalafil causes an increase in choriocapillaris flow and CT. To evaluate the effects of tadalafil on the retina and choroid, an OCTA assessment may be helpful. [ABSTRACT FROM AUTHOR]

Objective: The objective of this study is to assess the follow-up and treatment outcomes of eyes with wet age-related macular degeneration (wet AMD) for two years in a real-life clinical practice setting. Methods: In total, 37 eyes of 37 patients with wet AMD treated with 0.5 mg of intravitreal ranibizumab as needed and with at least 2 years of follow-up were retrospectively evaluated. Analyses included best-corrected visual acuity (BCVA) and central foveal thickness measurements (CFT) by optical coherence tomography at baseline, sixth month, first year, and second year along with the number of injections and follow-up visits. Results: A total of 37 eyes of 37 patients (23 women and 14 men) with a mean age of 74.6±7.9 years were evaluated in this study. The mean BCVAs were 58.1±26.7 letters at baseline, 59.9±29.3 letters at the sixth month, 58.8±28.9 letters at the first year, and 59.2±28.5 letters at the second year. No statistically significant difference in BCVA was detected among the scores at baseline, sixth month, first year, and second year (p=0.214, 0.791, and 0.945, respectively). The CFTs averaged 340.6±89.7 μm at baseline, 316.9±87.8 μm at the sixth month, 330.2±95.8 μm at the first year, and 323.4±97.2 μm at the second year. Only the CFT at sixth month showed a statistically significant improvement over the baseline value (p=0.031). Conclusion: Considering the number of injections and follow-up visits, along with the course of outcomes in BCVA and CFT, our real-life outcomes remained far below the outcomes reported in pivotal randomized clinical trials. However, recent papers related to real-life performance in wet AMD show similar results to those of our study. [ABSTRACT FROM AUTHOR]

Objective: To assess the real-life performance and clinical outcomes in patients with diabetic macular edema (DME). Method: The chart records were retrospectively evaluated for 42 eyes of 42 patients with DME, who were followed for two years between October 2013 and October 2016 at the Retina Unit. The patients were treated using intravitreal ranibizumab (0.5 mg/0.05 ml) for two years. Results: The Early Treatment of Diabetic Retinopathy Study (ETDRS) letter score indicated BCVA values of 71.1±22.4 letters at baseline, 74.1±19.1 letters at the sixth month, 76.2±16.2 letters at the first year, and 76.1±21.2 letters at the end of the second year. BCVA at the sixth month and first and second years were not significantly different from the baseline value (p=0.172, p=0.051, p=0.108). The mean CFT were 407.4±140.0 µm at the baseline, 375.5±141.5 µm at the 6th month, 357.0±129.1 µm at the 1st year, and 313.8±108.9 µm at the end of 2nd year. The change in mean CFT compared to the baseline value was not statistically significant at the 6th month, but were statistically significant at the 1st and the 2nd years (p=0.082, p=0.040, and p=0.000, respectively). The mean numbers of injections and follow-ups at the end of the second year were 3.7±2.5 and 9.1±3.1, respectively. Conclusion: The BCVA did not change significantly compared to baseline. The BCVA eye scores improved by 15 or more letters, in agreement with findings of other multi-center studies. However, the eyes with a BCVA loss of 15 or more letters showed a significant difference, which might reflect the smaller number of injections given in the present study compared to the other studies. [ABSTRACT FROM AUTHOR]

Copyright of Turkish Journal of Trauma & Emergency Surgery / Ulusal Travma ve Acil Cerrahi Dergisi is the property of KARE Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To evaluate functional and anatomical changes in branch retinal vein occlusion (BRVO) up to 3 months in early referral BCVA cases. Method: Twenty-three eyes of 23 consecutive BRVO patients diagnosed within 4 weeks of symptom onset were enrolled in this prospective, observational study. Eyes were followed up without treatment. Measurements in best corrected visual acuity (BCVA) and central macular thickness (CMT) at the baseline, 2 weeks, 1 month and 3 months were evaluated. Results: The improvement in mean BCVA from the baseline to 2 weeks (p=0.043), 1 month (p=0.012) and 3 months was found statistically significant (p=0.001). Despite a decrease in central macular thickness (CMT) was observed, the change in CMT from the baseline to 3 months did not reach a clinical significance (p=0.068). Conclusion: Considering the natural course in BRVO, follow-up without treatment may also be acceptable up to the first 3 months. Our results indicate that delaying treatment up to 3 months is not associated with increased CMT or deteriorated BCVA for recent onset early referral BRVO cases. [ABSTRACT FROM AUTHOR]

Objective: To compare distance and near visual acuity along with accommodative amplitude in eyes implanted with the Tetraflex and the Tek-clear accommodating intraocular lenses (AIOLs). Methods: Comparative, prospective, non-randomized study. Thirty-eight eyes of 26 patients implanted with the Tetraflex (17 eyes) and Tekclear (21 eyes) AIOLs were enrolled. Uncorrected distance visual acuity (UCDVA), best-corrected distance visual acuity (BCDVA), uncorrected near visual acuity (UCNVA), distance corrected near visual acuity (DCNVA), best-corrected near visual acuity (BCNVA) and spherical equivalent refraction were the parameters evaluated postoperatively. Also, the accommodative amplitude was assessed with subjective defocus method and objective anterior chamber depth measurement before and after the topical application of pilocarpine using a Scheimpflug-Placido disc topographer at postoperative month 3 and 6. Results: No statistically significant difference was found between the two AIOL types in regards to BCDVA, DCNVA, and BCNVA at months 1, 3, and 6 (p>0.05). The mean UCDVA was significantly better in Tetraflex implanted eyes (p=0.001, p=0.002, p=0.008), whereas the mean UCNVA was significantly better in Tek-clear implanted eyes (p=0.008, p=0.01, p<0.0001) at postoperative month 1, 3, and 6, respectively. Both subjective and objective accommodative amplitude assessments did not display a significant difference between the two groups at month 6 (p>0.05). Conclusion: The Tetraflex accommodative IOL seemed to be better at UCDVA, whereas Tek-clear seemed better at UCNVA. The accommodation range of Tetraflex and Tek-clear lenses was comparable. [ABSTRACT FROM AUTHOR]

Purpose: To quantify and compare the foveal avascular zone (FAZ) and the whole, parafoveal and foveal vessel density of superficial (SCP) and deep capillary plexus (DCP) in amblyopic eyes of adults and age-matched controls. Methods: This cross-sectional study involved 52 eyes from 34 subjects aged 18 to 45 years. Optical coherence tomography angiography (OCTA) was performed to all participants and SCP, DCP and FAZ were evaluated. SPSS (Statistical Package for the Social Sciences) 23 was used for data analysis. Results: Eighteen of 34 subjects (52,9%) were amblyopic and 16 (47,1%) of them controlled. Mean subject age was 31.2 years in the amblyopia group and 28.3 years in the control group. The mean FAZ measurements were 0.28 ± 0.08 in amblyopic eyes, 0.29 ± 0.08 in fellow eyes and 0.3 ± 0.11 in control eyes. The whole, foveal and parafoveal vessel density of SCP in both 3x3-mm and 6x6-mm scans were not statistically different in amblyopic eyes, fellow eyes and control eyes. In 6x6-mm scans, the whole, and parafoveal vessel density of DCP were significantly lower in amblyopic eyes than controls. There was no statistically significant difference in 3x3-mm scans about DCP. Conclusion: OCTA revealed lower vessel density in DCP of amblyopic eyes than fellow eyes and controls in adults. [ABSTRACT FROM AUTHOR]

Purpose: To evaluate qualitative optical coherence tomography (OCT) findings and quantitative parameters, such as central macular thickness (CMT) and subfoveolar choroidal thickness (SFCT), in the eyes of preeclamptic women. Methods: The prospective, comparative, cross-sectional study included 52 eyes of 52 preeclamptic (PE) women and 54 eyes of 54 healthy pregnant women in their second or third trimester. Central macular thickness (CMT), subfoveolar choroidal thickness (SFCT), were evaluated in relation to presence of positive qualitative OCT findings such as any subretinal or intraretinal fluid, irregularity on the external photoreceptor and RPE layer, or presence of pigment epithelial detachment. Results: No significant difference was detected between the PE group and the healthy pregnant group with respect to CMT (P= 0.905), but the mean SFCT value was significantly higher in the PE group than in the healthy pregnant group (391.4 ± 71.1 vs 331.5 ± 53.8 µm, P < 0.001). Receiver operating characteristic analysis revealed that SFCT could predict qualitative OCT findings in preeclampsia, and the optimal cut-off value was 400 µm with a sensitivity of 91% and a specificity of 85%. Conclusion: The eyes of preeclamptic women, and particularly those with positive qualitative OCT findings, showed significantly increased SFCT values. A preliminary cut-off level of 400 µm for SFCT is proposed for the prediction of severe preeclampsia. [ABSTRACT FROM AUTHOR]

Purpose: To quantify the foveal avascular zone and the whole, parafoveal, and foveal vessel density of superficial and deep capillary plexus in amblyopic eyes and agematched controls and to compare the measurements. Methods: This cross-sectional study involved 49 eyes from 17 patients with amblyopia and 21 healthy children (aged 6 to 16 years). Optical coherence tomography angiography was performed for all participants and super- ficial capillary plexus, deep capillary plexus, and foveal avascular zone were evaluated. Data from amblyopic eyes, fellow eyes with unilateral amblyopia, and control eyes were compared using the Mann--Whitney U test. Results: The mean patient age was 8.6 ± 2.5 years in the amblyopia group and 9.6 ± 2.9 years in the control group. The mean foveal avascular zone measurements were 0.251 ± 0.1 mm2 in the amblyopia group and 0.291 ± 0.1 mm2 in the control group. The whole, foveal, and parafoveal vessel densities of superficial capillary plexus were 48.8% ± 3.7%, 23.8% ± 8.8%, and 50.9% ± 4.6% in the amblyopia group and 48.4% ± 2.5%, 19.3% ± 5.4%, and 51.3% ± 2.7% in the control group. The whole, foveal, and parafoveal vessel densities of deep capillary plexus were 51.8% ± 4.3%, 37.6% ± 5.8%, and 54.8% ± 4.2% in the amblyopia group and 54.4% ± 3.2%, 34.9% ± 7.4%, and 56.8% ± 3.2% in the control group. No statistically significant difference was detected in all measurements. Conclusions: Assessment of the foveal avascular zone and vessel density of superficial capillary plexus and deep capillary plexus with optical coherence tomography angiography revealed no difference between amblyopic eyes, controls, and fellow eyes of patients with unilateral amblyopia. [ABSTRACT FROM AUTHOR]

Objectives: To evaluate the potential of selective laser trabeculoplasty (SLT) in two arms (360° vs. 180°) as a replacement for fixed combinations (FCs) with timolol in primary open angle glaucoma over 6 months. Materials and Methods: Of 40 patients in a prospective, comparative, interventional case series, 18 eyes and 22 eyes were randomized to SLT 180° and SLT 360° groups, respectively, along with 40 fellow-control eyes. FC with timolol was discontinued on the day of treatment for the eye to be operated on, while ongoing therapy was not interrupted for the contralateral eye. Eyes were examined for intraocular pressure (IOP) elevation 1 hour and 1 day after SLT. The follow-up visits were then scheduled for 1 week, 1 month, 3 months, and 6 months after, during the which the IOP of both eyes and any possible complications were evaluated. Results: There were no statistically significant differences in mean IOPs through 6 months among the groups with exception of postlaser 1 hour and postlaser 1 day (p<0.001 and p = 0.010, respectively). Multiple comparison analysis showed significantly higher IOP in both SLT 180° and SLT 360° subgroups compared to their controls at postlaser 1 hour (p = 0.007, p<0.001) but significantly lower IOP only in SLT 360° subgroup compared to the controls at postlaser day 1 (p=0.013). Conclusion: SLT offers promising potential as a substitute equivalent to efficacy of FCs with timolol. However, SLT 360° may not achieve additional IOP reduction. [ABSTRACT FROM AUTHOR]

• The decrease in GCC volume and RNFL possibly involved in suicidal attempt. • The GCC and RNFL loss might be related with neurodegeneration in BPD1. • The RNFL global loss was correlated with suicide behavior paremeters. The aim was to investigate the relationship between OCT findings and suicidal behavior (SB) in patients with Bipolar Disorder type 1 (BPD1) in comparison to healthy controls. Forty five euthymic BPD1 patients with previous suicide attempts (BPD1+), 46 euthymic BPD1 patients without previous suicide attempts (BPD1-) and 63 healthy controls were included. The subjects were evaluated with Sociodemographic Data Form, SCID, Suicide Behaviors Questionnaire, Beck Depression Inventory, Young Mania Rating Scale and OCT. All OCT measures were lower in patients with BPD1 than healthy controls (p <0.001). While no significant differences were found between (BPD1+) and (BPD1-) in all GCC levels and inferior RNFL values (p >0.05), the superior RNFL and global RNFL values were found to be lower in the (BPD1+) than in the (BPD1-) (p = 0.037, p = 0.028, respectively). Global RNFL was found to significantly predict suicide risk in a multivariate logistic regression model (p = 0.024 Exp(B):0.930). Neurodegeneration might occur during the course of BPD1 and SB. Decreased RNFL may be important for neurodegeneration related to SB. [ABSTRACT FROM AUTHOR]

• Optical coherence tomography angiography (OCT-A) is a new, noninvasive method. • OCT-A provides the assessment of the retinal and choroidal microvascularisation. • OCT-A could be useful in the management of adult-onset foveomacular vitelliform dystrophy. To evaluate retinal thickness, area of foveal avascular zone (FAZ), flow area and flow density of choriocapillaris, vessel density of both superficial capillary plexus (SCP) and deep capillary plexus (DCP) of eyes with adult-onset foveomacular vitelliform dystrophy (AOFVD) using optical coherence tomography angiography (OCT-A) and compare the results with healthy controls. 17 eyes of 14 patients diagnosed with AOFVD and 17 eyes of 17 healthy subjects were enrolled in this study. All patients underwent a complete ophthalmological examination and a 6 x 6 mm macular OCT-A scanning. Quantiative results of retinal thickness, retinal vessel density of SCP and DCP, FAZ area, flow area and flow density of choriocapillaris were analyzed. No statistically significant differences were noted in the vessel density of the SCP, except for the parafoveal nasal sector (P = 0.048). Similarly, no statistically significant differences were observed in the vessel density of the DCP, except for the parafoveal (P = 0.037) and the parafoveal temporal (P = 0.048) sectors. The choriocapillaris flow area and the flow density were significantly lower in the patients with AOFVD than in the healthy controls (P = 0.001 for both). The mean FAZ area and the retinal thickness measurements were comparable in both groups. Patients with AOFVD show vascular abnormalities that can be detected with OCT-A. OCT-A, as a noninvasive imaging modality, could provide a new perspective for understanding the pathophysiology of AOFVD and could also be useful in the follow-up of these patients and in the management of the disease progression. [ABSTRACT FROM AUTHOR]

Additionally, as stated in our paper, preeclampsia patients - particularly those with severe preeclampsia - are not easily able to be mobilized from the obstetric clinic to the Optical Coherence Tomography (OCT) room once they are stabilized. Patients enrolled in OCT assessment had already been put on a number of antihypertensive medications for many hours as well. Therefore, we believe that the effect of diurnal variation on choroidal thickness under that perturbed circumstance is likely to be negated or masked which needs approval or disapproval by further studies. [Extracted from the article]

Objectives: To evaluate the real-world outcomes of intravitreal anti-vascular endothelial growth factor (anti-VEGF) treatment in neovascular agerelated macular degeneration (nAMD) patients. Materials and Methods: Multicenter, retrospective, interventional, non-comparative study. The records of nAMD patients treated with an anti-VEGF agent on a pro re nata treatment regimen basis between January 2013 and December 2015 were reviewed. The patients who completed a follow-up period of 12 months were included. Primary outcome measures of this study were the visit and injection numbers during the first year. Results: Eight hundred eighty eyes of 783 patients met the inclusion criteria for the study. Mean number of visits at month 12 was 6.9±2.5 (range: 1-15). Mean number of injections at month 12 was 4.1±1.9 (range: 1-11). Mean visual acuity at baseline and months 3, 6, and 12 was 0.90±0.63 LogMAR (range: 0.0-3.0), 0.79±0.57 LogMAR (range: 0.0-3.0), 0.76±0.57 LogMAR (range: 0.0-3.0), and 0.79±0.59 LogMAR (range: 0.0-3.0), respectively. Mean central retinal thickness at baseline and months 6 and 12 was 395±153 μm (range: 91-1582), 330±115 μm (range: 99-975), and 332±114 μm (range: 106-1191), respectively. Conclusion: The numbers of visits and injections were much lower than ideal and were insufficient with the pro re nata treatment regimen. [ABSTRACT FROM AUTHOR]

Objective: To evaluate the ocular effects of "Bonzai", a synthetic cannabinoid (SC), in seropositive and seronegative users., Methods: Sixty eyes of 60 consecutive male patients with a history of "Bonzai" use and 30 eyes of 30 age-matched male healthy controls were enrolled in this case-control study. Patients with past "Bonzai" use were grouped as seropositive (n:30) and seronegative (n:30) according to urine toxicology tests. All groups were compared for blood pressures, intraocular pressure, foveal and parafoveal retinal thicknesses, subfoveal and parafoveal choroidal thicknesses, measurements of the peripapillary retinal nerve fibre layer (RNFL), and macular ganglion cell complex (GCC), subfoveal total choroidal, luminal and stromal areas, and choroidal vascularity index (CVI)., Results: No differences were noted in blood pressures between the groups (p > 0.05). The mean intraocular pressure was significantly lower in the seropositive group than in the other groups (p < 0.001). Foveal and retinal thicknesses, RNFL, and GCC measurements did not differ between the groups (p > 0.05). Subfoveal and parafoveal choroidal thicknesses and areas were lower in the seropositive group than in the other groups (p < 0.001, for all). CVI increased in both groups with "Bonzai" use compared to the control group (p < 0.001, for all)., Conclusions: This study indicates that intraocular pressure may decrease, and choroidal changes may be observed in SC users. Further clinical studies with a larger sample size, especially using purified SC for therapeutic purposes, are needed to confirm the present findings, and further histopathologic studies are required to clarify the changes in the choroid despite SC seronegativity., Clinical Trial Id: NCT06235346., (© 2024. The Author(s), under exclusive licence to The Royal College of Ophthalmologists.)

Purpose: This study aimed to compare the vessel density of the optic nerve head and radial peripapillary capillary in the eyes with early-stage primary open angle glaucoma and pseudoexfoliation glaucoma and control eyes., Methods: With visual field mean deviation scores >-6.0 dB, 54 eyes from 37 patients diagnosed with primary open angle glaucoma (n=18) and pseudoexfoliation glaucoma (n=18) and healthy controls (n=18) were enrolled in this cross-sectional observational study. Retrieved from optical coherence tomography angiography, vessel density for the optic nerve head and radial peripapillary capillary were analyzed according to the distribution of the data and appropriate tests. The diagnostic accuracy of vessel density parameters was also assessed., Results: The whole-image vessel density of the radial peripapillary capillary and inside-disc vessel density of the optic nerve head were significantly lower in eyes with primary open angle glaucoma and pseudoexfoliation glaucoma compared to those in the control eyes (p<0.05). Compared to that in pseudoexfoliation glaucoma, the inside-disc vessel density of the optic nerve head was significantly lower in primary open angle glaucoma (p<0.05). Inferotemporal sector vessel density of the optic nerve head for both primary open angle glaucoma and pseudoexfoliation glaucoma was significantly lower than that of the controls (p=0.009). In discrimination of primary open angle glaucoma vs. control and pseudoexfoliation glaucoma vs. control, area under the receiver operating characteristic curve values for inside-disc vessel density of the optic nerve head were 0.855 and 0.731, respectively (p<0.001, p=0.018). However, in discrimination of primary open angle glaucoma vs. pseudoexfoliation glaucoma, area under the receiver operating characteristic curve values for whole-image and inside-disc vessel densities of the optic nerve head were 0.707 and 0.722 (p=0.034, p=0.023)., Conclusions: Vessel densities of the optic nerve head and radial peripapillary capillary were significantly lower in eyes with primary open angle glaucoma and pseudoexfoliation glaucoma compared to healthy control eyes. In the early stage of glaucoma, the inside-disc vessel density of the optic nerve head slab may be lower in eyes with primary open angle glaucoma eyes compared to eyes with pseudoexfoliation glaucoma.

Background: This study aims to use laser flare photometry to evaluate flare changes in patients following corneal damage from a metallic foreign body (FB)., Methods: Foreign body injured eyes and the healthy fellow eyes of 54 consecutive patients were studied in this comparative, observational, cross-sectional study. Flare levels were analyzed according to demographics, history of previous exposures, foreign body location, and foreign body penetration into the injured cornea., Results: The mean flare value was significantly higher for the eyes with corneal foreign body injury compared to the fellow-control eyes (11.35±14.17 ph/ms and 6.30±3.81 ph/ms, respectively) (p=0.014). The mean flare values were significantly lower in eyes with a history of more than one previous corneal foreign body removal flare values than in other eyes (p=0.029)., Conclusion: Flare is increased by corneal foreign body exposure. However, eyes that experience multiple previous corneal foreign body exposures may show relatively low flare, probably due to corneal desensitization.

Aim: To compare two different anti-vascular endothelial growth factor (anti-VEGF) treatment regimens'-a priori pro re nata (PRN) and PRN regimen following the loading phase-anatomical and functional results in neovascular age-related macular degeneration (nAMD) patients., Methods: Totally 544 nAMD patients followed and treated with aflibercept ( n =135) and ranibizumab ( n =409) at 9 different centers between 2013 and 2015 were enrolled into this retrospective multicenter study. Patients with initial best corrected visual acuity (BCVA) interval of 1.3-0.3 (logMAR) and a minimum follow-up of 12mo were included. Patients under two different regimens-a priori pro re nata (1+PRN) or 3 consecutive intravitreal injections followed by a PRN regimen (3+PRN)-were compared in BCVA at 3 th , 6 th and 12 th months, and in central macular thickness (CMT) at 6 th and 12 th months. The total study group, intravitreal ranibizumab (IVR) and intravitreal aflibercept (IVA) groups were evaluated separately., Results: The mean CMT decreased in the 1+PRN ( n =101) regimen from 407 to 358 and 340 µm and in the 3+PRN ( n =443) group from 398 to 318 and finally to 310 µm at months 6 and 12, respectively. Anatomically, the CMT reduction at 6 th month (48.5 vs 76.4; P <0.05) was statistically significant in favor of 3+PRN group. BCVA changed in 1+PRN group from 0.77 to 0.78, 0.75 and 0.75; in 3+PRN group from 0.81 to 0.69, 0.72, and 0.76 at months 3, 6, and 12, respectively. Visual gain was statistically better in 3+PRN group at 3 th month (-0.01 vs 0.12; P <0.001). In IVR group, CMT reduction was in greater in 3+PRN at 6 th (44 vs 72) and 12 th month (61 vs 84), but statistically insignificant. The 3+PRN group revealed statistically better visual results at 3 th month (-0.02 vs 0.11, P <0.05). In IVA group, although statistically insignificant, CMT reduction (61 vs 89, 6 th month; 85 vs 97, 12 th month) and visual gain (0.02 vs 0.16; 0.02 vs 0.14; 0.05 vs 0.11) was found in favor of 3+PRN group at all visits., Conclusion: The loading dose of anti-VEGF treatments in nAMD leads to significantly better anatomical and functional results, regardless of the agent, specially in early follow-up interval., (International Journal of Ophthalmology Press.)