1. From the Department of Optometry, University of Durban-Westville, Durban, South Africa; the2International Centre for Eyecare Education, Sydney, Australia; the
2. From the Department of Optometry, University of Durban-Westville, Durban, South Africa; the3College of Optometry, University of Houston, Houston, Texas;
3. From the Department of Optometry, University of Durban-Westville, Durban, South Africa; the
4. International Centre for Eyecare Education, Sydney, Australia; the
5. Prevention of Blindness and Deafness, World Health Organization, Geneva, Switzerland; and the
6. National Eye Institute, National Institutes of Health, Bethesda, Maryland.