1. Aravind Eye Care System at Madurai, Pondicherry, and Coimbatore, India
2. Francis I. Proctor Foundation, University of California, San Francisco
3. Department of Ophthalmology, Dartmouth Medical School, Hanover, New Hampshire
4. Department of Ophthalmology, University of California, San Francisco
5. Francis I. Proctor Foundation, University of California, San Francisco4Department of Ophthalmology, University of California, San Francisco5Department of Epidemiology and Biostatistics, University of California, San Francisco
6. Francis I. Proctor Foundation, University of California, San Francisco4Department of Ophthalmology, University of California, San Francisco
7. Francis I. Proctor Foundation, University of California, San Francisco4Department of Ophthalmology, University of California, San Francisco6Department of Optometry, University of California, Berkeley