Seven-year outcomes following intensive anti-vascular endothelial growth factor therapy in patients with exudative age-related macular degeneration.

BACKGROUND: Anti-vascular endothelial growth factor (VEGF) therapy is currently the most effective therapy of exudative age-related macular degeneration (AMD). The aim of this study was to assess long-term benefits of intensive aflibercept and ranibizumab anti-VEGF therapy in patients with exudative AMD. METHODS: Two clinical trial sites recruited their original subjects for a re-evaluation 7 years after the baseline visit of the phase-3 Vascular Endothelial Growth Factor (VEGF) Trap-Eye: Investigation of Efficacy and Safety in Wet Age-Related Macular Degeneration (VIEW 2) trial. Forty-seven eyes of 47 patients with AMD originally treated with ranibizumab (14 eyes) or aflibercept (33 eyes) were included. RESULTS: Mean number of injections was 17.8 ± 3.0 during participation in the VIEW 2 trial. Fourteen of 47 (30%) eyes were given additional injections with a mean number of 5.7 ± 4.5 after the trial. At a mean follow-up time of 82 ± 5 months best corrected visual acuity (BCVA) remained stable or improved (≤ 10 letters lost) in 55% of patients in the entire study population, in 43% in the ranibizumab group and in 60% in the aflibercept group. In both groups combined mean BCVA was 54 ± 13 letters at baseline, 65 ± 17 letters at the end of the intensive phase and 45 ± 25 letters at the end of follow-up. There was no statistically significant difference in BCVA between the two groups at baseline (p = 0.88) and at the end of follow-up (p = 0.40). Macular atrophy was observed in 96% of eyes, average area was 7.22 ± 6.31 mm2 with no statistically significant difference between groups (p = 0.47). Correlation between BCVA at end-of-follow-up and the area of atrophy was significant (p < 0.001). At the end of follow-up, fluid was detected in 7 of 47 eyes (15%) indicating disease activity. CONCLUSION: Long-term efficacy of aflibercept and ranibizumab was largely consistent. Following a two-year intensive therapy with as-needed regimen, BCVA was maintained or improved in almost half of the patients and in the ranibizumab group and more than half of the patients in the aflibercept group with very few injections. In a remarkable proportion of eyes, BCVA declined severely which underlines the need for long-term follow-ups and may indicate a more prolonged intensive therapy. TRIAL REGISTRATIONS: VIEW 2 study: ClinicalTrials.gov ID: NCT00637377, date of registration: March 18, 2008. Long-term follow-up: IRB nr.: SE RKEB 168/2022, ClinicalTrials.gov ID: NCT05678517, date of registration: December 28, 2022, retrospectively registered.

[Evaluation of diabetic microangiopathy using optical coherence tomography angiography]. / Diabeteses kisér-károsodás vizsgálata optikai koherencia tomográfián alapuló angiográfiával.

INTRODUCTION: Optical coherence tomography angiography is a non-invasive imaging technique that is able to visualize the different retinal vascular layers using motion contrast to detect blood flow without intravenous dye injection. This method might help to assess microangiopathy in diabetic retinopathy during screening and follow-up. AIM: To quantify retinal microvasculature alterations in both eyes of diabetic patients in relation to systemic risk factors using optical coherence tomography angiography. METHOD: Both eyes of 36 diabetic patients and 45 individuals without diabetes were examined. Duration of diabetes, insulin therapy, blood pressure, HbA1c, dyslipidemia, axial length and the presence of diabetic retinopathy were recorded. Retinal vessel density was measured by optical coherence tomography angiography. The effect of risk factors on vessel density and between-eye asymmetry was assessed using multivariable regression analysis. RESULTS: Vessel density was significantly lower and between-eye difference was significantly higher in diabetic patients compared to controls (p<0.05). Both vessel density and between-eye asymmetry significantly correlated with diabetes duration (p<0.05) after controlling for the effect of risk factors. The between-eye asymmetry in vessel density was significantly higher in patients without clinically detectable diabetic retinopathy compared to control subjects (p<0.001). CONCLUSIONS: There is a decrease in retinal vessel density and an increase in between-eye asymmetry in patients with diabetes compared to healthy subjects. By using optical coherence tomography angiography, the detection of these microvascular alterations is possible before clinically detectable diabetic retinopathy and might serve as a useful tool in both screening and timing of treatment. Orv Hetil. 2018; 159(8): 320-326.

[Correction of aphakia with the implantation of the retropupillary iris clip intraocular artificial lens]. / Aphakia korrekciója irisklip mulencse retropupillaris beültetésével.

INTRODUCTION AND AIM: The correction of aphakia might be a challenge for the surgeon. The aim of this study is to describe the authors' experience with the implantation of the retropupillary iris clip intraocular lens. METHOD: Patients between January 2014 and December 2015 were included in the retrospective study. Retropupillary implantation of iris clip intraocular lens VRSA 54 (AMO Advanced Medical Optics, USA) was performed in all cases. The minimum follow up period was three months. The stability of the intraocular lens and the intraoperative and postoperative complications and the visual acuity were evaluated. RESULTS: During this time period 11 cases (1 female, 10 males) were included in the study. The mean age at the time of the implantation was 57.7 years (between 25-74 years). In 4 cases the iris clip lens was implanted during the first intervention, in 7 cases during the secondary procedure. In all cases the lens was fixated onto the iris posteriorly. The best corrected visual acuity before the iris clip implantation was 0.43 (0.1-1.0) and postoperatively at the time of the follow up 0.49 (0.04-1.0). CONCLUSIONS: With the use of the retropupillary implanted iris clip intraocular lens all of the patients could have been rehabilitated without major complications. Orv. Hetil., 2017, 158(1), 20-24.

[Angiography of the ocular fundus without dye: Optical coherence tomography based angiography in exsudative age-related macular degeneration]. / Szemfenéki érfestés festék nélkül: Az optikai koherencia tomográfia alapú angiográfia exsudativ típusú idoskori maculadegenerációban.

INTRODUCTION: Vascular endothelial growth factor antibody therapy is an established treatment of exsudative age-related macular degeneration. AIM: The morphologic characterisation of the macular microvasculature after longstanding treatment. METHOD: Forty-eight patients (34 women and 14 men; age, 74.4 ± 8.0 years) were enrolled in the study. During follow-up time (53.8 ± 31.0 months), 7.6 ± 4.9 injections were administered in 56 eyes. Optical coherence tomography angiographic examination was performed with AngioVue (Optovue Inc. Fremont, CA, USA). RESULTS: Distortion of the superficial retinal plexus and foveal avascular zone enlargement were noted in 5/56 eyes, deep retinal plexus defect was detected in 9/56 cases. Destruction of the choriocapillaries and the former neovascularisation could be found in 4 different patterns: 1. pigment epithelium and choriocapillary atrophy, 2. submacular scar, 3. active leaking choroidal neovascularisation, 4. intraretinal cysts. CONCLUSION: Optical coherence tomography angiography is a novel non-invasive method, which enables the follow up of macular degeneration. Orv. Hetil., 2016, 157(42), 1683-1690.

[Long-term treatment with intravitreal ranibizumab for exudative age-related macular degeneration]. / Hosszú távú intravitrealis ranibizumabkezelés exsudativ idoskori maculadegenerációban.

INTRODUCTION: The results of intravitreal ranibizumab treatment for exsudative age-related macular degeneration have been favourable until this time. AIM: To evaluate the two-year functional and anatomic results of intravitreal ranibizumab treatment. METHOD: 46 patients (age: 75 ± 9.1 years) were included in a prospective single center study. Treatment regimen was the following: monthly 0.5 mg ranibizumab was administered in the first 3 months, and later as required (pro re nata). The change of best corrected visual acuity and central retinal thickness was followed. RESULTS: The visus change at the end of the follow-up time was not statistically significant compared to baseline (p = 0.760) and the at the end of the first year (p = 0.154). Central retinal thickness decreased significantly compared to baseline (p = 0.000001), but the change was not statistically significant compared to the end of the first year (p = 0.875). CONCLUSIONS: Patients with neovascular macular degeneration treated with intravitreal ranibizumab using pro re nata regimen have stable visus for long term, and the exsudation could be reduced efficiently.

Multidisciplinary management of patients affected with pseudoxanthoma elasticum / Pseudoxanthoma elasticumban szenvedo betegek multidiszciplináris ellátása

Pseudoxanthoma elasticum (PXE, OMIM # 264800) is an autosomal recessive, multisystemic disorder, associated with mutations of the ABCC6 gene. Ectopic mineralization is in the background of the clinical manifestations of the disease. Calcium-salt crystals are deposited primarily in the skin, in the Bruch membrane of the eyes, and in the vascular endothelium. Thus, in addition to the skin lesions, visual impairment and cardiovascular involvement also occur. Clinical symptoms show varying severity and display heterogeneous appearance. The identification of the phenotype and care of the patients require a multidisciplinary perspective based on the collaboration of a dermatologist, ophthalmologist, cardiologist, and clinical geneticist. The aim of our work is to describe the development of symptoms of the disease, in order to facilitate the diagnosis. In addition, we aim to draw attention to the importance of early diagnosis of pseudoxanthoma elasticum, and to present modern diagnostic methods. Considering the development of severe systemic complications, the early diagnosis with the collaboration between related specialists is crucial to provide optimal clinical care and management of the patients.

The effect of image quality on the reliability of OCT angiography measurements in patients with diabetes.

BACKGROUND: This study aimed to determine the relationship between image quality and measurement repeatability of optical coherence tomography angiography (OCTA) parameters in patients with non-proliferative diabetic retinopathy. METHODS: A total of 100 eyes of 50 patients were included in the study. Three OCTA images were obtained consecutively during one session of imaging in all patients using the RTVue AngioVue OCTA device. We applied the signal strength index (SSI) provided by the RTVue system to define scan quality. Superficial vessel density (VD) in the central 3 × 3 mm macular and in the perifoveal region, as well as foveal avascular zone (FAZ) area were evaluated by the AngioAnalytics software for each scan from three consecutive measurements, whereby measurement repeatability of the OCTA parameters were calculated. The effect of SSI value on OCTA parameters, as well as on measurement errors was assessed. RESULTS: Values of SSI ranged from 30 to 85 with an overall mean of 61.79 ± 10.38. Mean SSI values showed significant positive correlation with the mean retinal capillary vessel density values, but not with non-flow area. Repeatability of OCTA parameters was generally improved with higher SSI values. We calculated a mean correction factor of 0.22% (95% CI 0.20-0.24 µm; p < 0.001) for VD at the 3 × 3 mm macular scan, 0.23% (95% CI 0.21-0.26%; p < 0.001) for perifoveal VD and - 0.001 mm2 (95% CI - 0.001 to 0.002; p = 0.001) for the non-flow area for each unit increase in SSI for the comparison of images with different SSI values. CONCLUSIONS: The influence of image quality on OCTA metrics should be considered for image comparisons during follow-up to avoid misinterpretation of small changes in OCTA parameters in patients with diabetes.