1 School of Biomedical Sciences, Ulster University, Coleraine, UK.
2 New England College of Optometry, Boston, MA, US.
3 Ulverscroft Chair for Global Eye Health, Centre for Public Health, School of Medicine Dentistry and Biomedical Sciences, Queen's University Belfast, Belfast, UK.
4 Orbis International, New York, US.
5 Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.