13 results on '"Schuster, A. K."'
Search Results
2. Inter-eye relationship of intraocular pressure change after unilateral trabeculectomy, filtering canaloplasty, or PreserFlo™ microshunt implantation
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Aghayeva, Fidan A., Chronopoulos, Panagiotis, Schuster, Alexander K., Pfeiffer, Norbert, and Hoffmann, Esther M.
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- 2021
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3. Association of Systemic Medication Use with Glaucoma and Intraocular Pressure: The European Eye Epidemiology Consortium.
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Vergroesen, Joëlle E., Schuster, Alexander K., Stuart, Kelsey V., Asefa, Nigus G., Cougnard-Grégoire, Audrey, Delcourt, Cécile, Schweitzer, Cédric, Barreto, Patrícia, Coimbra, Rita, Foster, Paul J., Luben, Robert N., Pfeiffer, Norbert, Stingl, Julia V., Kirsten, Toralf, Rauscher, Franziska G., Wirkner, Kerstin, Jansonius, Nomdo M., Arnould, Louis, Creuzot-Garcher, Catherine P., and Stricker, Bruno H.
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INTRAOCULAR pressure , *ANGIOTENSIN-receptor blockers , *ACE inhibitors , *GLAUCOMA , *CALCIUM antagonists - Abstract
To investigate the association of commonly used systemic medications with glaucoma and intraocular pressure (IOP) in the European population. Meta-analysis of 11 population-based cohort studies of the European Eye Epidemiology Consortium. The glaucoma analyses included 143 240 participants and the IOP analyses included 47 177 participants. We examined associations of 4 categories of systemic medications—antihypertensive medications (β-blockers, diuretics, calcium channel blockers [CCBs], α-agonists, angiotensin-converting enzyme inhibitors, and angiotensin II receptor blockers), lipid-lowering medications, antidepressants, and antidiabetic medications—with glaucoma prevalence and IOP. Glaucoma ascertainment and IOP measurement method were according to individual study protocols. Results of multivariable regression analyses of each study were pooled using random effects meta-analyses. Associations with antidiabetic medications were examined in participants with diabetes only. Glaucoma prevalence and IOP. In the meta-analyses of our maximally adjusted multivariable models, use of CCBs was associated with a higher prevalence of glaucoma (odds ratio [OR], 1.23; 95% confidence interval [CI], 1.08 to 1.39). This association was stronger for monotherapy of CCBs with direct cardiac effects (OR, 1.96; 95% CI, 1.23 to 3.12). No other antihypertensive medications, lipid-lowering medications, antidepressants, or antidiabetic medications were associated with glaucoma. Use of systemic β-blockers was associated with a lower IOP (β coefficient, −0.33 mmHg; 95% CI, −0.57 to −0.08 mmHg). Monotherapy of both selective systemic β-blockers (β coefficient, −0.45 mmHg; 95% CI −0.74 to −0.16 mmHg) and nonselective systemic β-blockers (β coefficient, −0.54 mmHg; 95% CI, −0.94 to −0.15 mmHg) was associated with lower IOP. A suggestive association was found between use of high-ceiling diuretics and lower IOP (β coefficient, −0.30 mmHg; 95% CI, −0.47 to −0.14 mmHg) but not when used as monotherapy. No other antihypertensive medications, lipid-lowering medications, antidepressants, or antidiabetic medications were associated with IOP. We identified a potentially harmful association between use of CCBs and glaucoma prevalence. Additionally, we observed and quantified the association of lower IOP with systemic β-blocker use. Both findings potentially are important, given that patients with glaucoma frequently use systemic antihypertensive medications. Determining causality of the CCB association should be a research priority. Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article. [ABSTRACT FROM AUTHOR]
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- 2023
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4. Do biometric parameters improve the quality of optic nerve head measurements with spectral domain optical coherence tomography?
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Elksne, E., Stingl, J. V., Schuster, A. K., Wagner, F. M., and Hoffmann, E. M.
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Retinal Ganglion Cells ,SD-OCT ,Biometry ,genetic structures ,Optic Disk ,Pilot Projects ,General Medicine ,RE1-994 ,Optic nerve head ,MRW ,eye diseases ,Ophthalmology ,Cross-Sectional Studies ,Nerve Fibers ,RNFL ,Humans ,Bruch Membrane ,Prospective Studies ,sense organs ,Intraocular Pressure ,Tomography, Optical Coherence ,Research Article ,BMO - Abstract
Background Spectral domain optical coherence tomography (SD-OCT) is a widely applied non-invasive technique for evaluating optic nerve head parameters. The aim of this study was to evaluate the impact of biometric parameters such as the spherical equivalent (SE) and the anterior corneal curvature (ACC) on the peripapillary retinal nerve fiber layer (pRNFL), Bruch’s membrane opening (BMO), and the minimum rim width (MRW) measurements performed by spectral domain optical coherence tomography (SD-OCT) in glaucomatous and healthy eyes. Methods In this cross-sectional, case–control prospective pilot study, the glaucoma group consisted of 50 patients with previously diagnosed and treated glaucoma and one healthy group of 50 subjects. Two consecutive examinations of pRNFL, BMO, and MRW with SD-OCT for every patient were performed without ACC and objective refraction (imaging 1) and with them (imaging 2). Results The interclass correlation coefficient (ICC) reflected high agreement between imaging 1 and imaging 2 in both groups. The ICC in the glaucoma and healthy groups for pRNFL (0.99 vs. 0.98), BMO (0.95 vs. 0.97), and MRW (1.0 vs. 1.0) was comparable. Conclusions Our preliminary data from a small number of eyes showed that the measurements of pRNFL, MRW, and BMO reflected high agreement between both imaging techniques with ACC and objective refraction and without these parameters in subjects with a refractive error up to ± 6.0 diopters. Further studies with participants with higher refractive error are necessary to evaluate the impact of biometric parameters such as SE and ACC on measurements with SD-OCT.
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- 2022
5. Influence of different primary surgical techniques on long-term intraocular pressure and medication in glaucoma after congenital cataract surgery.
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Strzalkowska, Alicja, Strzalkowski, Piotr, Stingl, Julia V., Pfeiffer, Norbert, Schuster, Alexander K., and Hoffmann, Esther M.
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INTRAOCULAR pressure ,CATARACT surgery ,OPERATIVE surgery ,TONOMETERS ,DRUGS ,ACADEMIC medical centers ,EYE drops - Abstract
Purpose: To assess long-time results of primary surgical treatment in children with glaucoma after congenital cataract surgery. Methods: A retrospective study of 37 eyes from 35 children with glaucoma after congenital cataract surgery, who underwent surgery between 2011 and 2021 at the Childhood Glaucoma Center, University Medical Center Mainz, Germany. Only children, who received a primary glaucoma surgery in our clinic within the given time (n = 25) and had at least one-year follow-up (n = 21), were included in the further analysis. The mean follow-up time was 40.4±35.1 months. The primary outcome was the mean reduction in IOP (in mmHg) from baseline to follow-up visits after the surgery, measured with Perkins tonometry. Results: 8 patients (38%) were treated with probe trabeculotomy (probe TO), 6 (29%) with 360° catheter-assisted trabeculotomy (360° TO) and 7 (33%) with cyclodestructive procedures. IOP was significantly reduced after probe TO and 360° TO after 2 years, from 26.9 mmHg to 17.4 mmHg (p<0.01) and 25.2 mmHg to 14.1 mmHg (p<0.02), respectively. There was no significant IOP reduction after cyclodestructive procedures after 2 years. Both, probe TO and 360° TO led descriptively to eye drops reduction after 2 years, from 2.0 to 0.7 and 3.2 to 1.1. The reduction was not significant. Conclusions: In glaucoma after congenital cataract surgery, both trabeculotomy techniques, lead to good reduction of IOP after 2 years. There is a need for a prospective study with comparison to the use of glaucoma drainage implants. [ABSTRACT FROM AUTHOR]
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- 2023
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6. Peripheral corneal thickness and associated factors – results from the population‐based German Gutenberg Health Study.
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Fieß, Achim, Marx‐Groß, Susanne, Wasielica‐Poslednik, Joanna, Nagler, Markus, Schmidtmann, Irene, Wild, Philipp S., Münzel, Thomas, Beutel, Manfred E., Lackner, Karl J., Pfeiffer, Norbert, and Schuster, Alexander K.
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CORNEA ,STATURE ,INTRAOCULAR pressure ,GAUSSIAN distribution - Abstract
Purpose: Changes in peripheral corneal thickness are described in various corneal diseases such as corneal ectasia. However, few data exist describing the increase in corneal thickness from central to peripheral and reporting the normal distribution of corneal thickness in rings around the corneal centre. The aim of this study was to report these cornea characteristics and investigate associated factors in a population‐based setting. Methods: The Gutenberg Health Study is a prospective, population‐based study examining participants in a 5‐year follow‐up (age range 40–80 years) using Scheimpflug imaging. Corneal thickness was assessed in each participant at the apex, as well as in the corneal centre (thinnest corneal thickness) and in rings with 2, 4, 6, 8 and 10 mm diameter around the corneal centre, and the increase in corneal thickness towards the periphery. The relationship between corneal thickness at these locations and possible associated factors was determined using linear regression models. For this purpose, general and ocular parameters were included. Results: A total of 9729 participants were included in the present analysis (4874 women, age 59.2 ± 10.8 years). Multivariable analysis showed a correlation between the increase in corneal thickness in the circles from 0 to 10 mm (diameter) and the following parameters: age (B = −0.24 µm per year, p < 0.001); body height (B = −0.04 µm, p = 0.005); smoking (B = −0.72 µm, p < 0.001); spherical equivalent (B = −0.70 µm per dioptre, p < 0.001); white‐to‐white distance (B = −0.75 µm/mm, p < 0.001); mean corneal radius (B = −3.61 µm/mm, p < 0.001); intraocular pressure (B = −0.12 µm/mmHg, p < 0.001); glaucoma (B = −1.94 µm, p < 0.001); and pseudophakia (B = 0.89 µm, p < 0.001). Conclusion: The results of the present study suggest that several general and ocular parameters are associated with peripheral corneal thickness. In the context of diagnosing glaucoma, a smaller increase in corneal thickness towards the periphery might be a new additional marker. [ABSTRACT FROM AUTHOR]
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- 2022
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7. Comparison of subconjunctival microinvasive glaucoma surgery and trabeculectomy.
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Wagner, Felix M., Schuster, Alexander K., Munder, Annika, Muehl, Marius, Chronopoulos, Panagiotis, Pfeiffer, Norbert, and Hoffmann, Esther M.
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TRABECULECTOMY , *OCULAR hypotony , *INTRAOCULAR pressure , *OPEN-angle glaucoma , *GLAUCOMA , *MITOMYCIN C - Abstract
Purpose: To assess surgical success and the post‐operative development of intraocular pressure between XEN45® gelstent, Preserflo® MicroShunt and trabeculectomy with mitomycin C. Methods: Data from 105 eyes from 105 patients of matched cases with refractory open‐angle glaucoma, who underwent surgery between January 2019, and August 2020, were evaluated. Patients underwent either stand‐alone XEN gelstent insertion with Mitomycin C, stand‐alone Preserflo with Mitomycin C or trabeculectomy with Mitomycin C. The primary outcome was the proportion of complete surgical success at 6 months post‐operatively (i.e. intraocular pressure between 5mmHg and 18mmHg, no revision surgery, no loss of light perception and no post‐operative pharmaceutical antiglaucomatous treatment). The reduction of intraocular pressure after 6 months, the classes of antiglaucomatous medication used post‐operatively, best‐corrected visual acuity, spherical refractive errors and astigmatism were assessed as secondary outcomes. Results: We included 35 eyes in each group. After 6‐month follow‐up, complete success was 73.5% [95%‐CI: 57.9%–89.2%] in the trabeculectomy group, 51.4% [95%‐CI: 34.0%–68.8%] in the XEN group and 74.2% [95%‐CI: 57.9%–90.5%] in the Preserflo group (p = 0.08). Regarding secondary outcomes, the reduction of intraocular pressure was 12.1 ± 7.9 mmHg in the trabeculectomy group and was thereby 5.8 [95%‐CI: 2.2–9.6] mmHg greater compared with the XEN group (p < 0.001) and 4.8 [95%‐CI: 0.9–8.7] mmHg higher than the Preserflo group (p = 0.01). Conclusions: No statistically significant differences were found between trabeculectomy, XEN45® gelstent implantation and Preserflo® MicroShunt implantation regarding surgical success after 6 months. Yet reduction in intraocular pressure was significantly higher in the trabeculectomy group. However, all three interventions resulted in sufficiently low post‐operative intraocular pressure and may therefore be considered individually for glaucoma treatment. [ABSTRACT FROM AUTHOR]
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- 2022
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8. Results of childhood glaucoma surgery over a long‐term period.
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Hoffmann, Esther M., Aghayeva, Fidan, Schuster, Alexander K., Pfeiffer, Norbert, Karsten, Mona, Schweiger, Susann, Pirlich, Nina, Wagner, Felix M., Chronopoulos, Panagiotis, and Grehn, Franz
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CONGENITAL glaucoma ,GLAUCOMA ,NEONATAL surgery ,FILTERING surgery ,TRABECULECTOMY ,INTRAOCULAR pressure - Abstract
Purpose: To evaluate long‐term results of glaucoma surgery in newborn and infants with glaucoma. Methods: Seventy‐nine eyes of 52 children (age: 3 weeks–15.3 years) with primary congenital or secondary glaucoma treated between 2015 and 2017 were included. The median follow‐up time was 3.9 years. Conventional probe trabeculotomy, 360° catheter‐assisted trabeculotomy, filtering and cyclodestructive surgery were compared. Strict criteria for surgical success were applied: Complete surgical success (IOP below target IOP, no further surgery) and incomplete surgical success (additional surgery allowed) were analyzed, and IOP at baseline and last follow‐up was compared. Results: Intraocular pressure (IOP) was significantly reduced in primary congenital (preoperative IOP: 27.8 ± 7.5 mmHg vs. postoperative IOP: 14.2 ± 4.5 mmHg) and secondary glaucoma (preoperative IOP: 29.2 ± 9.1 mmHg vs. postoperative IOP: 16.6 ± 4.7 mmHg). 90% of all eyes reached target IOP with or without medication allowing for additional surgeries. As first surgery, 360° catheter‐assisted trabeculotomy had a tendency to higher surgical success than other surgical approaches, while cyclodestructive procedures had lowest. Conclusions: We found very promising surgical results in our childhood glaucoma patient group. Surgical success in both congenital and secondary glaucoma was high. [ABSTRACT FROM AUTHOR]
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- 2022
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9. Prevalence of corneal arcus and associated factors in a German population—Results from the Gutenberg Health Study.
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Wasielica-Poslednik, Joanna, Hampel, Ulrike, Ries, Lisa, Faysal, Ruah, Schulz, Andreas, Prochaska, Jürgen H., Wild, Philipp S., Schmidtmann, Irene, Münzel, Thomas, Beutel, Manfred E., Lackner, Karl J., Pfeiffer, Norbert, and Schuster, Alexander K.
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CORNEA ,LOGISTIC regression analysis ,INTRAOCULAR pressure ,HDL cholesterol - Abstract
Purpose: We aimed to determine the prevalence of corneal arcus and to identify associated factors in the general population of Germany. Methods: The Gutenberg Health Study (GHS) is a population-based cohort study in Germany, which includes an ophthalmological assessment. Refraction, distance-corrected visual acuity, non-contact tonometry and anterior segment imaging were performed for the five-year follow-up examination. Anterior segment photographs were graded for the presence of corneal arcus. Prevalence estimates were computed, and multivariable logistic regression analysis was applied to determine associated factors for corneal arcus including sex, age, spherical equivalent, central corneal thickness, intraocular pressure (IOP), socio-economic status, smoking, BMI, systolic and diastolic arterial blood pressure, HbA1c, HDL-C, LDL-C, triglyceride, and lipid modifying agents. Results: A total of 9,850 right and 9,745 left eyes of 9,858 subjects (59.2±10.8 years), 49.0% females were included in this cross-sectional analysis. 21.1% of men (95%-CI: 20.0%– 22.3%) had a corneal arcus in at least one eye, and 16.9% (95%-CI: 15.9%– 18.0%) of women. In multivariable analyses, the presence of corneal arcus was associated with male gender (OR = 0.54 for female, p<0.0001), higher age (OR = 2.54 per decade, p<0.0001), smoking (OR = 1.59, p<0.0001), hyperopia (OR = 1.05 per diopter, p<0.0001), thinner cornea (OR = 0.994 per μm, p<0.0001), higher IOP (OR = 1.02, p = 0.039), higher HDL-C-level (OR = 2.13, p<0.0001), higher LDL-C-level (OR = 1.21, p<0.0001), and intake of lipid modifying agents (OR = 1.26, p = 0.0001). Arcus was not associated with socio-economic status, BMI, arterial blood pressure, and HbA1c. Conclusions: Corneal arcus is a frequent alteration of the cornea in Germany and is associated with ocular parameters and systemic parameters of dyslipidemia. [ABSTRACT FROM AUTHOR]
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- 2021
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10. Venous stasis retinopathy in a ten-year-old boy with ocular hypertension: a case report.
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Stingl, Julia V., Nunez, Laura Ponce, Schuster, Alexander K., and Hoffmann, Esther M.
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RETINAL vein occlusion ,OCULAR hypertension ,INTRAOCULAR pressure ,VALSALVA'S maneuver ,SYMPTOMS ,VISUAL acuity - Abstract
Background: Central retinal vein occlusion is a variable disease pattern. Preliminary stages of a complete occlusion of the central vein, wich are subsumed under the term venous stasis retinopathy, may occur as transient blurred vision and with subtle alterations of the fundus. Course and prognosis are benign, visual acuity usually recovers. By now, venous stasis retinopathy in children due to Valsalva maneuver has not been described in literature yet.Case Presentation: We present an impressive case of venous stasis retinopathy in a 10-year-old boy with ocular hypertension and megalocornea due to increased intraocular pressure provoked by Valsalva maneuver. Main symptom was transient blurred vision in the left eye. The intraocular pressure was 28 mmHg, fundus exam revealed tortuous veins and a flame shaped hemorrhage at 7 o'clock. Total recovery under topical antiglaucomatous therapy could be observed after 1 month.Conclusions: Acute increase in intraocular pressure, provoked by Valsalva maneuver is a risk factor for venous stasis retinopathy. Further general and vascular risk factors should be ruled out by extensive examination. Children with ocular hypertension might be at higher risk for impending vein occlusion as shown in this case. [ABSTRACT FROM AUTHOR]- Published
- 2020
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11. The Diagnosis and Treatment of Glaucoma.
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Schuster, Alexander K., Erb, Carl, Hoffmann, Esther M., Dietlein, Thomas, and Pfeiffer, Norbert
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GLAUCOMA ,SCOTOMA ,INTRAOCULAR pressure ,OPTIC nerve ,OLDER people ,OCULAR hypertension - Abstract
Background: Glaucoma is a group of chronically progressive disorders of the optic nerve. In this article, we present the epidemiology of and risk factors for glaucoma, as well as the diagnostic work-up and treatment options. Methods: This review is based on pertinent publications retrieved by a selective search in Medline and the Cochrane Library, supplemented by further articles chosen by the authors. Results: In Europe, the prevalence of glaucoma is 2.93% among persons aged 40 to 80 years. The prevalence rises with age, reaching 10% in persons over 90 years old. The available diagnostic methods include ophthalmoscopy, tonometry, perimetry, and imaging techniques. The treatment of glaucoma is focused on lowering the intraocular pressure with topical drugs, laser therapy, and glaucoma surgery. In patients with manifest glaucoma, lowering the intraocular pressure prevents the progression of visual field defects, with a number needed to treat of 7. Conclusion: The diagnostic evaluation of glaucoma rests on multiple pillars, all of which must be considered for establishing the diagnosis and defining the desired target pressure: these are, among others, the intraocular pressure and ocular function and morphology. Individually tailored pressure-lowering treatment should be evaluated in regularly scheduled follow-up visits for assessment of function and morphology and adjusted as necessary to minimize the risk of progression. [ABSTRACT FROM AUTHOR]
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- 2020
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12. Width of anterior chamber angle determined by OCT, and correlation to refraction and age in a German working population: the MIPH Eye&Health Study.
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Vossmerbaeumer, Urs, Schuster, Alexander K., and Fischer, Joachim E.
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ANTERIOR chamber (Eye) , *OPTICAL coherence tomography , *EYE physiology , *INTRAOCULAR pressure , *TONOMETRY , *ERROR analysis in mathematics , *REGRESSION analysis - Abstract
Background: Optical coherence tomography (OCT) of the anterior segment allows quantitative analysis of the geometry of the chamber angle. We performed bilateral spectral-domain OCT measurements in healthy, emmetropic, hyperopic, and myopic subjects to establish correlations between the width of the angle, the refraction, and intraocular pressure of the test persons. Methods: Out of 4,617 eyes (2,309 subjects), those with refractive errors of < −4 or > +3 diopters were identified by objective refraction measurement (KR-8800 Kerato-Refractometer, Topcon Inc., Japan) and examined using the anterior segment mode of a spectral-domain 3D OCT-2000 (Topcon Inc., Japan). Non-contact tonometry was performed (CT-80, Topcon Inc., Japan). One hundred and eight eyes of 54 emmetropic subjects (± 0.5 dpt) served as reference group. Previous ocular surgery was exclusion criterion in all groups. Width of the chamber angle was determined using semi-automated software tools and statistical analysis of the data (Pearson correlation, ANOVA with post-hoc test and Bonferroni correction, regression analysis) was performed using SPSS software (SPSS 19.0, Chicago, IL, USA). Results: Six hundred and sixty-eight eyes of 398 persons (292 male, 96 female) were included in the study. Mean hyperopic refraction was +4.24 (+3 to +7.75) dpt, mean myopic refraction was −5.86 (−4 to −11.75) dpt. Valid chamber angle OCT measurements could be obtained from 50 (69.4 %) hyperopic and 400 (71.4 %) myopic eyes meeting the inclusion criteria. The mean width of the chamber angle was determined as 31.8° (range: 13.5 to 45.6, SD 7.49) in the hyperopic group, 40.8° (range: 19.3 to 66.0, SD 8.1) in the myopic group, and 36.3° (range: 21.1 to 51.8, SD 6.8) in the emmetropic reference group. Correlation was highly significant ( p > 0.001) between refractive error and the aperture of the chamber angle as measured from OCT. The association of the intraocular pressure and the refraction was also highly significant ( p > 0.001) for the three groups. Conclusion: The spectral-domain OCT yielded measurements that could be used for digital analysis of the chamber angle geometry. Our results highlight the correlation between refraction and aperture of the angle in hyperopia and myopia as determined by the 3D OCT-2000: hyperopia is associated with a narrower chamber angle, myopia with a wider aperture of the angle. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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13. Choroidal Thickness in Non-Arteritic Anterior Ischemic Optic Neuropathy.
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MIAO HE, WENYONG HUANG, SCHUSTER, ALEXANDER K., STEINMETZ, PHILIPPE, FORSTER, TESSA M., SCHLICHTENBREDE, FRANK C., HARDER, BJORN C., and JONAS, JOST B.
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CHOROID , *NEUROPATHY , *INTRAOCULAR pressure , *PHOSPHODIESTERASE inhibitors , *SURGERY ,EYE blood-vessels - Published
- 2015
- Full Text
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