Can some sort of trauma return one's eyesight if they are blind?

Surgery the trauma?: An implant: one such device is the creation of shawn kelly from carnegie mellon university in pittsburgh, and the result of a decade's worth of research. It is made up of two tiny cameras attached to a pair of glasses which send images to a computer chip attached to the patient's eye. The chip turns the images into an electrical current sent along a wire to a film inserted behind the retina.