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. Author manuscript; available in PMC: 2018 Dec 1.
Published in final edited form as: Ophthalmology. 2017 Aug 26;124(12):1764–1777. doi: 10.1016/j.ophtha.2017.06.032

Figure 1.

Figure 1

AREDS2 Ancillary SDOCT Study Participants and Selection of Groups At Risk of New-Onset Central Geographic Atrophy (N=292), and New-Onset Geographic Atrophy (GA) (N=265).

AREDS2 = Age-Related Eye Disease Study 2, SDOCT = spectral domain optical coherence tomography, GA = geographic atrophy, AMD = age-related macular degeneration, CP = color photography. a On color photography (CP), 25 eyes of 25 participants with no Advanced AMD (per AREDS2 definition) were excluded due to insufficient CP data on follow-up: 14 lost to follow-up before 1 year + 11 with CP ungradable for GA on follow-up visits. b One eye per participant.