“I don’t think anybody in the field has seen videos like that before,” he says.
Dubbed the Prima, the implant consists of a 2-mm square chip that is surgically placed under the retina, the backmost part of the eye, in an 80-minute procedure. A pair of glasses with a camera captures visual information and beams patterns of infrared light on the chip, which has 378 light-powered pixels. Acting like a tiny solar panel, the chip converts light to a pattern of electrical stimulation and sends those electrical pulses to the brain. The brain then interprets those signals as images, mimicking the process of natural vision.