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This is an image of an artificial retina that may one day restore sight to the blind. This artificial retina device, developed by Mark Humayun, a retinal surgeon and biomedical engineer at Doheny Eye Institute in Los Angeles, consists of a camera built into a pair of glasses that sends radio signals to a tiny chip in the back of the retina.
The chip--small enough to fit on a fingertip--is surgically implanted and stimulates nerves that lead to the vision center of the brain. The current chip has a resolution of 60 pixels, but Humayun says that number could be increased to over a thousand in the next version.Image credit: Science Nation, National Science Foundation
