USC and Second Sight Medical Products Inc, leading developers of retinal prostheses for treating blindness, announced today that they have completed enrollment of the first phase of a U.S .FDA approved clinical study of the Argus II Retinal Prosthesis System. They also announced that enrollment at key European sites is underway as studies continue in Mexico.

When the idea appeared several years ago, it sounded persuasive: How about implanting electrodes at the defective retina of blind subjects and connecting them with a mini camera in order to re-establish vision.