Red light restores vision in aged eyes

The millions of rods and cones in the retina at the back of each of your eyes, which turn light into nerve signals to send to the brain, use a lot of energy. So the retina tends to burn out faster than the rest of the body. But now scientists have found that short bursts of a red light shone into your eyes could help reduce or even reverse this ageing process. Katie Haylor spoke to Glenn Jeffery, who's been looking at a group of 24 people with no eye disease for the study... Like this podcast? Please help us by supporting the Naked Scientists