1. From the Brien Holden Vision Institute, Sydney, Australia; 2Vision Cooperative Research Centre, Sydney, Australia; 3School of Optometry and Vision Science, University of New South Wales, Sydney, Australia;
2. Vision Cooperative Research Centre, Sydney, Australia; 4College of Optometry, University of Houston, Houston, Texas;
3. From the Brien Holden Vision Institute, Sydney, Australia; 2Vision Cooperative Research Centre, Sydney, Australia;
4. State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Centre, Sun Yat-sen University, Guangzhou, PR China; and
5. From the Brien Holden Vision Institute, Sydney, Australia;
6. Vision Cooperative Research Centre, Sydney, Australia; 7Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.