Bionic eye gives blind man sight

A man who lost his sight 30 years ago says he can now see flashes of light after being fitted with a bionic eye.

It uses a camera and video processor mounted on sunglasses to send captured images wirelessly to a tiny receiver on the outside of the eye.

When these electrodes are stimulated they send messages along the optic nerve to the brain, which is able to perceive patterns of light and dark spots corresponding to which electrodes have been stimulated.