1 From the Department of Ophthalmology, UTSW Medical Center, Dallas, Texas (Bakr); Department of Ophthalmology, Cairo University, Cairo, Egypt (Elhusseiny); Department of Ophthalmology, Ain Shams University Hospitals, Cairo, Egypt (Toma, Sallam); Department of Ophthalmology, Harvey and Bernice Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, Arkansas (Elhusseiny, Toma, Sallam); Department of Ophthalmology, Gloucestershire Hospitals, Gloucestershire, United Kingdom (Sallam).