The document discusses the bionic eye, which aims to restore sight for those with vision impairment. It works by bypassing non-functioning photoreceptors and using a retinal implant connected to a camera to convert images into electrical signals that stimulate the retina. The latest version, Argus II, has been approved for use in Europe since 2011 and the US since 2013. It consists of an implant with electrodes that is surgically placed on the retina, connected to external glasses with a camera and processing unit. The camera captures scenes and the processing unit converts them into signals sent to the implant wirelessly via the glasses, stimulating the retina and allowing basic vision.