The Argus® II Retinal Prosthesis System The Argus II Retinal Prosthesis System ("Argus II") is the world's first approved device intended to restore some functional vision for people suffering from blindness. Argus II is approved for use in the United States and the European Economic Area and is available in some European countries, with several more to be added. For more information about Argus II system, please consult our product information brochure.