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Characterization of AMD based on the appearance of drusen using standard fundus photography methods.
| Age-Related Eye Disease Study (AREDS) Stages of AMD | |
|---|---|
| Category I | No or few small drusen (<63 µm) |
| Category II | Intermediate drusen (<125 µm) |
| Category III | Extensive intermediate or large drusen (>125 µm) |
| Category IV | Neovascular AMD or Central Geographic Atrophy |
