Argus II retinal prosthesis system safe, beneficial at 3 years

The Argus II retinal prosthesis system showed favorable results at 3 years in patients with retinitis pigmentosa who experience blindness, according to a study. The single-arm, prospective, unmasked clinical trial included 30 patients who were implanted with the Argus II (Second Sight Medical Products) in a single eye at 10 centers throughout the United States and Europe. Twenty-nine patients had retinitis pigmentosa, and one patient had choroideremia; 29 patients had bare light perception, and one patient had no light perception.