Fluorescein Leakage and Optical Coherence Tomography Features of Choroidal Neovascularization Secondary to Pathologic Myopia

n/

Tomographic Biomarkers Predicting Progression to Fibrosis in Treated Neovascular Age-Related Macular Degeneration: A Multimodal Imaging Study.

Purpose: To describe the photoreceptor–retinal pigment epithelium (RPE) interface changes and to analyze the relationships between these features and hyperreflective material (HRM) with scarring and atrophy at the macula of patients with neovascular age-related macular degeneration (nAMD). Design: Retrospective single-center observational study. Participants: A total of 150 eyes from 144 patients with naive nAMD were included. Methods: All patients had OCT (HRA-OCT Spectralis, Heidelberg Engineering, Heidelberg, Germany) at baseline and at 1, 3, 6, and 12 months. Macular scar and macular atrophy (MA) were determined on multimodal imaging, including color fundus (CF) and near-infrared imaging at baseline and month 12 (M12). Main Outcome Measures: Change in HRM type (undefined and well-defined) and location, development of fibrotic or nonfibrotic macular scar, MA, and best-corrected visual acuity (BCVA) at M12. Results: At baseline, eyes with fibrin on CF had thicker and wider HRM on OCT that correlated strongly with presence of undefined HRM. The proportion of eyes with undefined HRM fell dramatically by month 1 but well-defined HRM increased. At M12 defined HRM was strongly associated with macular scar (chi-square, 82.1; P < 0.001). Ordinal regression showed that both the thickness and the width of HRM were significant risk factors for development of fibrotic scar (P < 0.001 and P = 0.02) but not nonfibrotic scars (P = 0.67 and P = 0.65). Fibrotic macular scar (P = 0.001) but not nonfibrotic scar (P = 0.129) negatively affected visual acuity at M12. Ordinal regression showed that the risk factors for progression to MA were reticular pseudodrusen and thinner HRM (P = 0.017 and P = 0.028, respectively). MA negatively affected BCVA at M12 (P < 0.001). Conclusion: Our study supports the role of HRM as an important biomarker for the evolution of macular scar and atrophy in patients with nAMD undergoing treatment with anti-VEGF therapies. Undefined HRM can resolve with treatment, whereas well-defined HRM likely contains vascular complexes and fibrotic elements

Serous Retinal Detachments Complicating Interferon-α and Ribavirin Treatment in Patients with Hepatitis C

Purpose: To report the cases of two patients with chronic hepatitis C infection showing serous retinal detachments similar to Vogt-Koyanagi-Harada (VKH) disease. Methods: We reviewed the clinical records of two patients who were diagnosed with VKH-like disease during combined interferon-α (IFNα) and ribavirin treatment. Results: Interruption of IFNα and ribavirin treatment in association with oral corticosteroids resulted in a favorable visual outcome in the case of diffuse retinal detachment (case 1). On the contrary, visual acuity did not improve when late cicatricial stage disease was already present (case 2). Conclusion: There is increasing evidence of a link between hepatitis C virus infection treated with pegylated IFNα-2b and the development of VKH-like disease. Knowing the potential side effects of IFNα and ribavirin administration is fundamentally important, as is the need to closely follow up those patients that need to undergo this treatment

Practical Management of Retinal Vein Occlusions

Retinal vein occlusion (RVO) is the second most common cause of visual impairment due to retinal disease after diabetic retinopathy. Nowadays, the introduction of new, powerful diagnostic tools, such as spectral domain optical coherence tomography, and the widespread diffusion of intravitreal drugs, such as vascular endothelial grow factor inhibitors or implantable steroids, have dramatically changed the management and prognosis of RVO. The authors aim to summarize and review the main clinical, diagnostic, and therapeutic aspects of this condition. The authors conducted a review of the most relevant clinical trials and observational studies published within the last 30 years using a keyword search of MEDLINE, EMBASE, Current Contents, and Cochrane Library. Furthermore, for all treatments discussed, the level of evidence supporting its use, as per the US Preventive Task Force Ranking System, is provided

Macular perfusion parameters in different angiocube sizes: does the size matter in quantitative optical coherence tomography angiography?

n/

The Role of Angiogenesis in the Development of Proliferative Diabetic Retinopathy: Impact of Intravitreal Anti-VEGF Treatment

Although cellular and molecular bases of proliferative diabetic retinopathy are only partially understood, it is evident that this complication of diabetes is characterized by the formation of new vessels inside the retina showing abnormal architecture and permeability. This process, if not controlled by selective laser photocoagulation, leads to irreversible retinal damages and loss of vision. Angiogenesis, that is, the condition characterized by the growth of new blood vessels originated from preexisting ones, was shown to have a major role in the pathogenesis of proliferative retinopathy and, as a consequence, intravitreal antiangiogenic injection was suggested as a feasible treatment for this disease. Here, we describe the different antiangiogenic approaches used to treat this disease along with the respective advantages and limitations when compared to laser treatment. Altogether, even though further and longer studies are still needed to clarify the best possible therapeutic protocol, the antiangiogenic treatment will reasonably have a future role in the therapy and prevention of proliferative diabetic retinopathy

optical coherence tomography angiography in the evaluation of geographic atrophy area extension

n/

Guidelines on Optical Coherence Tomography Angiography Imaging: 2020 Focused Update

n/