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. Author manuscript; available in PMC: 2006 Jun 1.
Published in final edited form as: Arch Ophthalmol. 2005 Nov;123(11):1484–1498. doi: 10.1001/archopht.123.11.1484

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.