1. Department of Ophthalmology, University of Jos, Jos, Nigeria
2. Sightsavers, Kaduna, Nigeria
3. Kilimanjaro Centre for Community Ophthalmology International, Division of Ophthalmology, University of Cape Town, Cape Town, South Africa
4. Ophthalmology Unit, Surgery Department, Usmanu Danfodiyo University, Sokoto, Nigeria
5. National Eye Center, Kaduna, Nigeria
6. Jigawa State Ministry of Health, Dutse, Nigeria
7. Vision2020 Support Programme, Jos, Nigeria
8. Task Force for Global Health, Decatur, GA, USA
9. Federal Ministry of Health, Abuja, Nigeria
10. Clinical Research Department, London School of Hygiene & Tropical Medicine, London, United Kingdom
11. London Centre for Neglected Tropical Disease Research, London, United Kingdom