System Iris II is a small silicon chip with 150 electrodes implanted in the retina. Video camera integrated into the glasses sends images to a smartphone-sized portable computer, which converts them into electrical signals. These signals are transmitted wirelessly to the implant, which, in turn, stimulates your optic nerve carries image to the brain. Patients after surgery will be trained to use the system and with practice can recognize black, white and gray shapes, experts say.

The developers claim that they were able to restore vision in rats to a level equivalent to 20/250. Applies to people this means that people could see the largest line of letters in the table Sivtseva to check the view.