Presented at: Royal College of Ophthalmologists Annual Congress, Liverpool, UK, May 2015. Financial Disclosure(s): The author(s) have made the following disclosure(s): J.D.C.: Grant d International Health PhD Fellowship, grant no. 097437/Z/11/Z. Supported by the Wellcome Trust, London, United Kingdom. The sponsor or funding organization had no role in the design or conduct of this research. Aut...