Affiliation: | 1. Aravind Eye Hospital, Madurai, India;2. Francis I. Proctor Foundation, University of California San Francisco, San Francisco, California;3. UCSF Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California;4. UCSF Department of Ophthalmology, University of California San Francisco, San Francisco, California;5. Division of Research, Kaiser Permanente Northern California, Redwood City, California |