Surgeon Sanduk Ruit looks into the eyes of a patient through a microscope while conducting an operation to remove cataracts at the Tilganga Eye Center in Kathmandu. A simple eye operation pioneered by Ruit, a Nepali national, at the Tilganga Eye Centre has benefited tens of thousands of people in Nepal and other countries in Asia and Africa, where surgical teams from the centre provide much needed care in field camps.Navesh Chitrakar/REUTERS