1. King Khaled Eye Specialist Hospital, Vitreoretinal Division, Riyadh, Kingdom of Saudi Arabia 2University of California-San Diego, Jacobs Retina Center, La Jolla, California, United States
2. Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States
3. Department of Ophthalmology and Visual Sciences, University of Wisconsin-Madison, Madison, Wisconsin, United States
4. Department of Epidemiology, The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States 5Department of Ophthalmology, The Wilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States