This study seeks to better characterize relationships between visual function and the progression (worsening) of geographic atrophy (GA) due to age-related macular degeneration (AMD). The study also will generate new information on the relationship between genetics and GA progression. This is a global, prospective, multicenter, epidemiologic study enrolling patients with GA secondary to AMD. The study visits are scheduled to occur every 6 months. The anticipated duration of the study is up to 60 months.
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