JCT: Robert R. Young Professor and Chairman, Department of Ophthalmology and Visual Science, Yale University School of Medicine, Chief of Ophthalmology, Yale-New Haven Hospital,New Haven, ConnecticutAD: Clinical Research Fellow/Specialist Registrar in Ophthalmology, Academic Unit of Ophthalmology, University of BirminghamPI: Professor of Ophthalmology, Academic Unit of Ophthalmology, University of BirminghamJJH: Assistant Professor of Ophthalmology and Visual Science, Yale University School of Medicine, New Haven, ConnecticutTA: Pre-Doctoral Research Fellow, Yale University School of Medicine, New Haven, Connecticut