1. From the Department of Biostatistics Epidemiology and Scientific Computing, and the
2. King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia; the
3. Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia; and the
4. Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia; the
5. Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia; and the5Department of Ophthalmology, College of Medicine, University of Florida, Jacksonville, Florida.