1. Allen Foster Community Eye Health Research Centre, Gullapalli Pratibha Rao International Centre for Advancement of Rural Eye care, L V Prasad Eye Institute, Hyderabad, India,
2. Brien Holden Institute of Optometry and Vision Science, L V Prasad Eye Institute, Hyderabad, India,
3. School of Optometry and Vision Science, The University of New South Wales, Sydney, Australia,
4. Wellcome Trust/DBT India Alliance Fellow, L V Prasad Eye Institute, Hyderabad, India,