1 Department of Ophthalmology, Harvey and Bernice Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA; Department of Ophthalmology, Kasr Al-Ainy Hospitals, Cairo University, Cairo, Egypt.
2 Department of Ophthalmology, Nazareth Hospital, Philadelphia, PA, USA.
3 Department of Ophthalmology, Harvey and Bernice Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
4 Department of Ophthalmology and Visual Sciences, University of Maryland School of Medicine, Baltimore, MD 21201.
5 Department of Ophthalmology, Harvey and Bernice Jones Eye Institute, University of Arkansas for Medical Sciences, Little Rock, AR, USA; Department of Ophthalmology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA. Electronic address: AMElhusseiny@uams.edu.