1. Department of Ophthalmology, University of Florida College of Medicine, 580 W. 8th Street, Tower-2, Jacksonville, FL 32209, USA
2. The Vanderbilt Eye Institute, Vanderbilt University Medical Center, Nashville, TN, USA
3. Glaucoma Research Chair, Department of Ophthalmology, College of Medicine, King Saud University, Riyadh 11424, Saudi Arabia