1. Francis I. Proctor Foundation, University of California, San Francisco2Department of Ophthalmology, University of California, San Francisco3Department of Optometry, University of California, Berkeley
2. Aravind Eye Care System, Madurai, India5Aravind Eye Care System, Pondicherry, India6Aravind Eye Care System, Coimbatore, India
3. Francis I. Proctor Foundation, University of California, San Francisco
4. Department of Ophthalmology, University of California, San Francisco
5. Francis I. Proctor Foundation, University of California, San Francisco2Department of Ophthalmology, University of California, San Francisco7Department of Epidemiology and Biostatistics, University of California, San Francisco
6. Francis I. Proctor Foundation, University of California, San Francisco2Department of Ophthalmology, University of California, San Francisco