Check out this quick read. It's about how scientists are working to help the blind to see:
"The retinal implants communicate with an external camera and computer. The person who receives the implant has a pair of glasses which include a video camera. Visual data from the camera is processed by a computer, the processed data is then sent to the implant - all this is done wirelessly. The electrodes in the implant turn the data into electrical impulses which are sent into the brain, which in turn interprets the visual data."Pretty cool.