Affiliations

• ¹ International Centre for Eye Health, London School of Hygiene & Tropical Medicine, London, UK; Moorfields Eye Hospital, London, UK. Electronic address: matthew.burton@lshtm.ac.uk.
• ² Department of Ophthalmology, University of Calabar, Calabar, Nigeria.
• ³ International Centre for Eye Health, London School of Hygiene & Tropical Medicine, London, UK; School of Optometry and Vision Science, University of Auckland, Auckland, New Zealand.
• ⁴ LAICO, Aravind Eye Care System, Madurai, India.
• ⁵ International Agency for the Prevention of Blindness, London, UK.
• ⁶ Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
• ⁷ Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, Johns Hopkins University, Baltimore, MD, USA.
• ⁸ Vision and Eye Research Institute, School of Medicine, Anglia Ruskin University, Cambridge, UK.
• ⁹ Centre for Public Health, Queen's University, Belfast, UK; Orbis International, New York, NY, USA; Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
• ¹⁰ International Centre for Eye Health, London School of Hygiene & Tropical Medicine, London, UK.