1. From Centre de Recherche en Santé de Nouna, Nouna, Burkina Faso (A.S., M.O., M.B., V.B., T.O., G.C., C.D., C.B.); and the Francis I. Proctor Foundation (E.L., H.H., T.C.P., B.F.A., T.M.L., C.E.O., J.R.), the Department of Epidemiology and Biostatistics (T.C.P., T.M.L., C.E.O.), the Department of Ophthalmology (T.C.P., B.F.A., T.M.L., C.E.O.), and the Institute for Global Health Sciences (T.M.L., C.E.O.), University of California, San Francisco, San Francisco.