Artificial retinal implant takes the next step by expanding the clinical trial. The Argus II is the second generation of an electronic retinal implant designed for the treatment of blindness due to Retinitis Pigmentosa, a group of inherited eye diseases that affect the retina. The Argus II implant consists of an array of 60 electrodes that are attached to the retina. These electrodes conduct information acquired from an external camera to the retina to provide a rudimentary form of sight to implanted subjects.