Active clinical trials for "Macular Degeneration"

The main purpose of this study is to investigate the association between VEGF gene polymorphism and the response to intravitreal drugs in neovascular age-related macular degeneration. This is a retrospective review of patients treated between 2008 and 2012 at the Institute of Vision, in Belo Horizonte, Brazil.

The purpose of this study is to determine the changes in macular function during anti-VEGF treatment for neovascular age-related macular degeneration.

The investigators expect to develop an algorithm that can interpret OCT images and automated determine whether the macula is normal or not by using OCT image-based deep learning techniques. And investigators wish to develop software applications that will help better screen and diagnose macular diseases in resource-limited areas.

The purpose of this study is to evaluate this AngioScan angiography software on patients with various retinal vascular disorders. The advanced OCT instrument is an FDA approved clinically used camera, but the AngioScan angiography software is not FDA approved. Investigators would like to know if this imaging device and software can improve the quality of images and visualization of imaged tissues and whether they are useful in the diagnosis and treatment of eye diseases. Images collected in this study may be compared to other images collected as part of standard of care on the same patient (OCT, FA, AF, Fundus).

This study seeks to evaluate a system for the automated early detection of Age-Related Macular Degeneration (AMD). AMD is a condition in which there is breakdown of the macula of the eye, the part of the retina that is responsible for sharp, central vision. We will take pictures of subjects' eyes using an automated camera. These photographs will be securely transmitted and and then analyzed by a computer program which has been developed in other studies. The outcome of the computer program analysis will be compared with human analysis of these same pictures. If the computer analysis is has good enough accuracy, then this computer system could be used for wide-scale screening for AMD.

Canadians fear loss of vision more than any other disability. Vision loss has an enormous impact on quality-of-life and is extremely costly from a societal and economic perspective. In 2001, more than 600,000 Canadians were estimated to have severe vision loss, accounting for 17% of total disability in Canada. One in 9 individuals experience severe vision loss by 65 years of age; however, this increases to 1 in 4 individuals by 75 years. The financial cost of vision loss in Canada is $15.8 billion per year. There is a general perception that vision loss is "normal with aging" but 75% of vision loss is estimated to be preventable. The major causes of severe vision loss are age-related macular degeneration (ARMD), glaucoma, particularly primary open-angle glaucoma (POAG), and diabetic retinopathy (DR). Canada is headed for an epidemic of age-related eye disease and, unless something is done to prepare for this, severe vision loss will have significant consequences in terms of societal and economic costs. Through this proposed Research Program, and in conjunction with the investigators international academic and private sector partners, the investigators will build and develop unique quantitative imaging technologies to permit non-invasive assessment of visual changes, structural changes in the thickness of the retina at the back of the eye and also changes in the amount of blood flowing through the blood vessels that feed the retina with oxygen. This research will add to the investigators basic knowledge in predicting the development of sight-threatening change in patients with the three diseases, and facilitate earlier detection of the problem to help us discover earlier treatments for people with these conditions. The reliability of each imaging technology will be assessed by determining its ability to differentiate between diseased and healthy eyes. Cross-sectional analyses at yearly intervals, as well as change over time analyses, will be undertaken.

Main Objective: The main objective of this retrospective observational study was to describe the evolution of visual acuity measured on ETDRS (Early Treatment Diabetic Retinopathy Study) scale, for patients with exudative Age-Related Macular Degeneration (ARMD), treated with Lucentis, under real conditions of care, in terms of mean change of the Best Corrected Visual Acuity (BCVA), measured at 24 months (± 4 weeks).

The investigators think that there is a connection between the use of plaquenil and the prevention of Age related macular degeneration (AMD). The investigators believe that the use of plaquenil makes bruch's membrane thicker, thereby preventing Chroidal Neovascularization (CNV) growth.

Choroidal neovascularisation in age related macular degeneration is one of the major causes of legal blindness in the western world existing in two major occurences, the dry and the wet form.The etiology of age related macular degeneration is yet unknown. Genetic factors, oxidative stress, Ischaemia, and aging of the retinal pigment epithelium are discussed as etiologic factors. The risk of rapid vision loss is much higher in wet AMD, a dry form may transform to a wet form. From a prior study the investigators know that the posterior hyaloid is significantly more frequent attached in wet AMD. This study is conducted to examine whether the attached posterior hyaloid is a risk factor to develop wet AMD in dry AMD cases.

The Cirrus OCT provides due to the spectral domain technology a 2-fold resolution than Stratus OCT generated in a comparable amount of time. Due to this higher resolution the retinal surface and the retinal pigment epithelium can be identified more clearly, a significantly reduced number of algorithm failures is expected