1. International Programs Division, The Fred Hollows Foundation, Melbourne, Australia
2. School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia
3. National Program for Eye Health, Phnom Penh, Cambodia
4. International Programs Division, The Fred Hollows Foundation Cambodia, Phnom Penh, Cambodia
5. Eye Care Foundation, Phnom Penh, Cambodia
6. Melbourne School of Population and Global Health, University of Melbourne, Melbourne, Australia
7. Biostatistics, Centre for Eye Research Australia, Melbourne, Australia