Affiliation: | 1. International Centre for Eye Health, London School of Hygiene and Tropical Medicine, London, UK;2. Department of Ophthalmology, University of Nairobi, Nairobi, Kenya;3. PCEA Kikuyu Eye Unit, Kikuyu, Kenya;4. Kitale District Hospital, Kitale, Kenya;5. Sabatia Eye Hospital, Wodanga, Kenya;6. Kenyatta National Hospital, Nairobi, Kenya;7. Department of Pathology, MP Shah Hospital, Nairobi, Kenya;8. KAVI Institute of Clinical Research, University of Nairobi, Nairobi, Kenya;9. UCL Institute of Ophthalmology, London, UK;10. Moorfields Eye Hospital, London, UK;11. St. Bartholomew's Hospital, London, UK;12. MRC Tropical Epidemiology Group, London School of Hygiene and Tropical Medicine, London, UK |