From the Lowy Medical Research Institute (M.L.G., K.E., R.F., J.T., S.G., S.H.-P., Y.I., L. Scheppke, M.I.D., M.K., M. Friedlander), University of California, San Diego (M.W., M.K.H., M. Baldini, M.G.B., C.M.M.), Scripps Research Institute (S.H.-P., Y.I., M.K., M. Friedlander), and Scripps Clinic Medical Group (M. Friedlander), La Jolla, and Point Loma Nazarene University, San Diego (M.I.D.) - all in California; Moran Eye Center, University of Utah, Salt Lake City (L. Sauer, B.J.H., P.S.B.); Moorfields Eye Hospital (T.F.C.H., C.E.) and University College London Institute of Ophthalmology (S.M.W., M. Fruttiger), London; Columbia University, New York (C.C., T.N., R.A.); Walter and Eliza Hall Institute of Medical Research, Parkville, VIC (R.B., M. Bahlo), Royal Victorian Eye and Ear Hospital (M.O.) and University of Melbourne Centre for Eye Research (R.G.), Melbourne, VIC, and the Save Sight Institute, University of Sydney, Sydney (M.G.) - all in Australia; and Massachusetts General Hospital, Boston (F.E.).