A retinal implant which is solar-powered could restore sight in some cases of blindness. This new technology allows nerve impulses to be transmitted to the brain despite damage to the retina. The recent development from Professor Laxman Saggere of University of Illinois at Chicago is that this eye "prosthetic" is solar-powered avoiding the risk of heating retinal cells from the application of direct electricity, and the need for external batteries. This article was published in New Scientist, a very readable new magazine covering developments in science.