View clinical trials related to Macular Degeneration.
Filter by:The rationale of this research is to determine if patients with lupus and presenting retinal "pseudo-drusen-like" deposits have genetic and complement-related similarities with AMD patients. Based on the results obtained, this study could lead to future research that could better target the treatment of patients with lupus or patients with AMD (Age related Macular Degeneration). The primary objective is to check if patients with lupus, treated or not with antimalarial drugs, with "pseudo-drusen-like" deposits have a different complement profile (functional exploration of complement, complement factors, genetic complement polymorphisms involved in AMD) compared to patients without "pseudo-drusen-like" deposits.
Purpose: To examine the genotypes associated with the peripheral retinal phenotypic features in patients with age-related macular degeneration documented with wide-field imaging. Design: Clinic-based case series study in Croatia. Participants: 160 patients >50 years of age known to have early or advanced AMD and 150 subjects >50 years of age without known AMD (controls) Methods: Both groups of patients were examined with ophthalmoscopy and OCT to confirm their classification. Posterior and peripheral fundus features were documented with Optos wide-field imaging (Optos P200MA, Optos Plc, Dunfermline, Scotland) and graded. DNA was extracted from blood samples and gene polymorphisms were evaluated for complement factor H (CFH) rs1061170 and rs1410996, age-related maculopathy susceptibility (ARMS2) rs10490924, high temperature requirement factor A1 (HtrA1) rs11200638, complement factor B (CFB) rs4151667 and rs641153, complement factor 2 (C2) rs9332739 and rs547154 and complement factor 3 (C3) rs2230199.
Double-masked, uncontrolled, multi-center, study in which participants will be randomized to one of 3 doses of topical ocular PAN 90806 administered once daily for 12 weeks.
The main objectives of this observational cohort study are to describe the use of intravitreal aflibercept and to describe follow-up as well as treatment patterns in patients with wAMD or DME in routine clinical practice in Latin America for a study population of treatment naive patients and those who have received prior therapy (anti-VEGF injections, laser, steroids, etc.) and are being switched to intravitreal aflibercept injection.
The purpose of this study is gain a better understanding of a molecule called alpha melanocyte stimulating hormone (alpha MSH) and its potential role in your retinal disease. Alpha MSH has been shown to have an important role in the regulation of ocular immunity in animal models of inflammatory retinal diseases and retinal dystrophies, and there may be a protective effect of alpha MSH. By studying the levels of alpha MSH in your eye we may better understand its role in advanced dry macular degeneration. By studying the levels of this molecule we hope to better understand if it may be a good target for future treatment.
Patient-reported vision-related quality of life (QOL) outcomes are increasingly incorporated into clinical trials of new treatments for age-related macular degeneration (AMD). In patients with central visual field defects they often do not correlate with distance visual acuity changes as evaluated according to the Early Treatment Diabetic Retinopathy Study (ETDRS) protocol. Therefore there is the need for better correlated visual acuity (VA) outcome measures for these patients. In a current big trial for treatment of dry AMD (geographic atrophy) reading speed and low luminance visual acuity are used as outcome measures for the first time. However, limited information is available regarding the associations between distance ETDRS visual acuity, reading speed, low luminance visual acuity, contrast sensitivity, morphological parameters and the National Eye Institute Visual Function Questionnaire-25 (NEI VFQ-25) subscales judged relevant to these measures. Evaluating these correlations could provide the basis for objective study outcome parameters which are better correlated to patient-reported outcomes. Further it increases the understanding of the impact of visual impairment on activities and functioning in patients with eye diseases. There is an immediate benefit to the study patients, as they might gain information regarding their individual results regarding objective VA measures, contrast sensitivity (and their impact on reading ability). Furthermore, the results of the study could be beneficial for future patients due to, e.g., a better understanding of the disease, especially regarding factors which have an impact on their near vision ability and therefore their quality of life. The study could provide a basis to find and include outcome measures which are correlated better with quality of life than ETDRS distance VA for further AMD trials.
This is a randomized, open-label, interventional, controlled study to determine the effects of Zaltrap on Neovascularized Wet Macular Degeneration as compared to the control anti-vascular endothelial growth factor ("anti-VEGF") injections (bevacizumab, ranibizumab, or aflibercept).
Age-related macular degeneration (AMD) affects 2 million people in France. It characterized by progressive degeneration of the central area of the retina allowing detailed vision. It is the main cause of irreversible blindness in France. All patients initially present an early form, the latter can evolve in two different ways: the atrophic form, which progresses slowly, and the exudative or neovascular form, of more rapid evolution. While the treatment of exudative AMD has improved dramatically in recent years, there is currently no therapy for atrophic AMD. Recently, it has been demonstrated in atrophic AMD, an accumulation of inflammatory cells, macrophages, in the sub-retinal space. This space is located between the pigment epithelium (PE) and the photoreceptors. It is physiologically devoid of immune cells (immune privilege). Macrophages will secrete many pro-inflammatory molecules, such as cytokines. It has been shown in mouse models that some cytokines (IL-1beta, IL6 et TNFalpha) have a deleterious role on (PE) and photoreceptors. The identification of specific cytokines in the aqueous humor of patients with atrophic AMD would help to better understand this disease and consider potential targeted therapies. This study will be conducted in the ophthalmology department of the Croix-Rousse Hospital in Lyon. 80 patients will be recruited and divided into 4 groups: three experimental groups of 20 patients with : Early / Intermediate AMD, atrophic AMD or exudative AMD, and one control group of 20 patients without signs of AMD. Assays of the markers will be performed using the Luminex® technique on aqueous humor and blood samples collected for all patients during cataract surgery. The concentrations obtained in the aqueous humor will be normalized on their respective blood levels in order to confirm the intraocular secretion of these markers,. The identification of particular cytokine profiles in atrophic AMD compared to other forms of AMD would support emerging hypotheses of involvement of specific inflammatory cells in this pathology. There is currently no treatment available for atrophic AMD. If molecular screening identifies one or more specific biomarkers, targeted therapy may be considered.
Age related macular degeneration (ARMD) is a major and irreversible cause of blindness among the elderly. The sub-retinal space, located between the retinal pigmentary epithelium (RPE) and the external segments of the retinal photoreceptors, plays a crucial role in this pathology. A recent epidemiologic study in the US, has shown that Parkinson patients treated with L-DOPA, developed only later an ARMD when compared to the untreated patients. The L-Dopa is an endogenous ligand of the GPR43 receptor (G protein-coupled receptors), located on the RPE's cell's apical pole. This receptor, via several intracellular mechanisms, regulates the cell's exosomal and endosomal pathways: it would appear that the L-DOPA, by stimulating this receptor, decreases significantly the RPE's exosome release. The contents of the exosomes is still uncertain, however in addition to their signalization role, it seems they transport pro-inflammatory components, possibly helping the cellular recruitment due to the mononuclear phagocytic systems, particularly toxic for the photoreceptors. The aim of this study is to estimate the prevalence of ARMD in a sample of Parkinson's Patients followed at Fondation Ophtalmologique Adolphe de Rothschild and to compared it to the prevalence of ARMD of the general population. Furthermore the study aims to explore a possible causal link between L-DOPA treatment and ARMD.
There is a need to investigate the effectiveness of IVT aflibercept injection in routine clinical practice. The aim of this study is to collect 12-month real-world clinical data from treatment-naïve nAMD patients who started first-line treatment with IVT aflibercept injection, according to the SmPC (Summary of Product Characteristics) and the SERV (Spanish Society of Retina and Vitreous) guidelines. The effectiveness of IVT aflibercept will be assessed by the changes in VA (Visual Acuity) and CRT (Central Retinal Thickness) during treatment.