The Argus II is a retinal prosthesis designed to restore vision in individuals with severe retinal diseases, such as retinitis pigmentosa. It works by converting images captured by a small camera mounted on glasses into electrical signals, which are then transmitted to an array of electrodes implanted in the retina. This stimulation helps the brain perceive visual information. The device consists of two main components: the external camera and the internal implant. The camera captures the visual scene and sends the data wirelessly to the implant, which stimulates the remaining retinal cells. While the Argus II does not restore normal vision, it can provide users with the ability to perceive light and shapes.