A retinal implant is a medical device designed to restore vision for individuals with certain types of blindness, particularly those with conditions like retinitis pigmentosa or age-related macular degeneration. The implant works by converting light into electrical signals that stimulate the remaining healthy cells in the retina, allowing the brain to perceive visual information. These devices typically consist of a small chip implanted in the eye, along with an external camera that captures images. The camera sends the visual data to the implant, which then activates the retinal cells. While retinal implants do not restore normal vision, they can provide a level of sight that helps users navigate their environment.