1. From the The London School of Hygiene and Tropical Medicine, London, United Kingdom;
2. The Carter Center, Addis Ababa, Ethiopia;
3. Light For The World, Addis Ababa, Ethiopia;
4. NIHR (National Institute for Health Research) Biomedical Research Centre, Moorfields Eye Hospital and UCL Institute of Ophthalmology and UCL Partners AHSC (Academic Health Science Centre), London, United Kingdom; and
5. The Carter Center, Atlanta, Georgia.
6. From the The London School of Hygiene and Tropical Medicine, London, United Kingdom; 4NIHR (National Institute for Health Research) Biomedical Research Centre, Moorfields Eye Hospital and UCL Institute of Ophthalmology and UCL Partners AHSC (Academic Heal