Tiny Electronic Chips Restore Sight to 2 Blind British Men: Teams of doctors at the Oxford Eye Hospital and King’s College Hospital in London embedded the small square chips—0.12 by 0.12 inches—in a thin sheet of tissue at the backs of the men’s eyes. As soon as they were switched on, the chips began performing the duties of defunct photoreceptors—also called rods and cones—converting light into electrical impulses that travel to the brain. A thin cable threaded beneath the skin connects the chip to a battery pack, which also sits under the skin near the ear...
James and Millar must now learn to interpret the patchwork of bright and dark spots they see in order to recognize people and objects in the world around them.
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