Beijing Tongren Eye Center, Beijing Tongren Hospital, Beijing Ophthalmology and Visual Sciences Key Laboratory, Capital Medical University, Beijing, China. Doheny Image Reading Center, Doheny Eye Institute, Los Angeles, California. Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, California. Department of Ophthalmology, Medical Center Ophthalmology Associates, San Antonio, Texas. Retina Consultants of Houston, Houston, Texas; and. Optos PLC, Dunfermline, United Kingdom.