The contact lens was once a precious and expensive piece of eyewear which had to be looked after and carefully cleaned every night. But that all changed in the 1990s. Ron Hamilton was involved in developing lenses and packaging which could be made so cheaply they could be worn just once and then thrown away. He has been speaking to Ashley Byrne.
Photo: Ron Hamilton (l) with his business partner Bill Seden (r) and their wives with their original contact lens machine. Courtesy of Ron Hamilton.