Age-related macular degeneration (AMD) is a progressive retinal disease and a leading cause of blindness in the population > 50 years of age in developed countries.1
AMD is classified into early, intermediate, and late-stage disease. Late-stage encompasses neovascular AMD (nAMD) and atrophic AMD (geographic atrophy). In nAMD, macular neovascularization (MNV) develops in the macula. While nAMD only represents about 10% of the entire AMD population, it accounts for the majority of vision loss. Effective treatment options are available for the management of nAMD.
Late-stage dry AMD manifests as GA, a progressive and irreversible atrophy of the outer retina, that becomes vision-threatening as lesions encroach towards the fovea. Until recently, there have been no efficacious treatment options to slow or prevent the progression of dry AMD or GA.
1. Desai D, Dugel PU. Complement cascade inhibition in geographic atrophy: a review. Eye (Lond). Feb 2022;36(2):294-302. doi:10.1038/s41433-021-01765-x