1 From the Faculty of Medicine and Health, University of New South Wales, Sydney, Australia (Tweedie, Chan, Tsoi, Vasanthan, Maegraith, Agar, Francis); Department of Ophthalmology, Prince of Wales Hospital, Sydney, Australia (Lee, Agar, Francis); Keble College, Oxford University, Oxford, United Kingdom (Borchert); Faculty of Medicine, Nursing, and Health Sciences, Monash University, Melbourne, Australia (Gunasegaram); School of Medicine, Western Sydney University, Campbelltown, Australia (Tiong).