Classification and Pathogenesis in Dry-Form (Non-Neovascular) Age Related Macular Degeneration

Age related macular degeneration is basically evaluated as non-neovascular (dry) and neovascular (wet) type. Initial stages start with atrophy, drusen development in RPE-Bruch membrane level and pigmentary changes and in final stages may result in CNVM, disciform scar and geographic atrophic changes. Visual acuity loss is more severe and faster in neovascular ARMD, late stages of geographic atrophy involving foveal center may also cause significant visual loss.