Argus® II Retinal Prosthesis System The Argus II Retinal Prosthesis System ("Argus II") is intended to provide electrical stimulation of the retina to elicit visual perception in blind individuals with severe to profound retinitis pigmentosa. The implant is an epiretinal prosthesis surgically implanted in and on the eye that includes an antenna, an electronics case, and an electrode array. The external equipment includes glasses, a video processing unit (VPU) and a cable. For more information on Argus II: details HUMANITARIAN DEVICE: Authorized by Federal (U.S.) law to provide electrical stimulation of the retina to induce visual perception in blind patients with severe to profound retinitis pigmentosa and bare light or no light perception in both eyes. The effectiveness of this device for this use has not been demonstrated.