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Modified Clinical Age-Related Maculopathy Staging (CARMS) classification system11
| Category | Description |
|---|---|
| 0 | No drusen |
| 1 | <20 hard drusen |
| 2 | >20 hard drusen or some medium drusen |
| 3 | >20 medium drusen, or a single large drusen |
| 4 | Foveal geographic atrophy |
| 5 | Choroidal neovascularization |
