Table 1.

Staging of age-related macular degeneration (AMD)

Stage of AMD	Findings
Early ARM	Soft drusen of <65 μm with pigmentary changes in the macula
Intermediate ARM	Drusen sized from 65 to 125 μm (size of vein at the disc margin), presence of one large druse (125 μm), or multiple large drusen without the advanced forms
Late dry ARM	Geographic atrophy (a well-demarcated area of macular RPE atrophy at least 175 μm in diameter)
Late wet ARM	Choroidal neovascular membrane, macular scar, RPE detachment, subretinal blood or exudates not accounted for by any other disease apart from ARM

Abbreviations: ARM, age-related maculopathy; RPE, retinal pigment epithelium.