Ophthalmologist Dr Daemon McClunan decided he needed to find a way to help prevent sight loss after coming across too many South Africans, especially those living in rural areas, who were going blind.  

He had seen too many people without access to regular eye screenings arriving at hospitals almost blind, with eye diseases that could have been treated if caught earlier.

On Wednesday night, McClunan won the SAB Foundation Social Innovation Awards for inventing a shunt to treat glaucoma and prevent blindness. He was a joint winner alongside Moleseng Mohlolo, who designs furniture for disabled people...