Neovascular Age-related Macular Degeneration Clinical Trial
Official title:
OCT Evaluation of Treated and Untreated Choroidal Neovascular Membranes in Age-Related Macular Degeneration
Age-related macular degeneration (AMD) is the leading cause of blindness in non-Hispanic
white Americans. Neovascular AMD is an advanced form of macular degeneration that
historically has accounted for the majority of vision loss related to AMD. The presence of
choroidal neovascular membrane (CNV) formation is the hallmark feature of neovascular AMD.
Choroidal neovascular membranes consist of buds of neovascular tissue and accompanying
fibroblasts from the choroid perforating Bruch's membrane with extension either above or
below the retinal pigment epithelium. These neovascular complexes are associated with
hemorrhage, fluid exudation and fibrosis formation resulting in photoreceptor damage and
vision loss. Treatment of neovascular AMD consists of injecting inhibitors of vascular
endothelial growth factor (VEGF) into the vitreous cavity to interfere with proliferation of
choroidal neovascularization and to reduce vascular permeability.
OCT is an imaging technology that can perform non-contact cross-sectional imaging of retinal
and choroidal tissue structure in real time. It is analogous to ultrasound B-mode imaging,
except that OCT measures the intensity of reflected light rather than acoustical waves.
This observational study will use OCT technology to study and compare the retinal and
choroidal anatomy and blood flow in two groups of patients with neovascular AMD: treatment
naïve group and active treatment group.
The purpose of this study is to assess the utility of OCT angiography in the evaluation of
NVAMD.
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