Table 5.
Five-Year Rates of Advanced AMD,* by Severity of Pigmentary Abnormalities at Baseline
|
No. (%) |
||||||
|---|---|---|---|---|---|---|
| Step | Pigmentary Abnormalities | No. at Risk | NeoAMD | CGA | Both | Total |
| 1 | None | 2412 | 38 (1.6) | 0 | 0 | 38 (1.6) |
| 2 | Increased pigment ≥questionable and/or depigmentation <I-2 | 586 | 44 (7.5) | 38 (6.5) | 6 (1.0) | 88 (15.0) |
| 3 | Depigmentation ≥I-2, <0.5 DA | 131 | 17 (13.0) | 15 (11.5) | 0 | 32 (24.4) |
| 4 | Depigmentation ≥0.5 DA | 48 | 11 (22.9) | 7 (14.6) | 7 (14.6) | 25 (52.1) |
| 5 | Noncentral GA ≥questionable | 35 | 2 (5.2) | 14 (40.0) | 1 (2.9) | 17 (48.6) |
| Total | 3212 | 112 (3.5) | 74 (2.3) | 14 (0.4) | 200 (6.2) | |
Abbreviations: AMD, age-related macular degeneration; CGA, geographic atrophy involving center of macula; DA, disc area; GA, geographic atrophy; NeoAMD, neovascular AMD.
In the right eyes of 3212 participants free of advanced AMD in both eyes at baseline.