Blind soldier learns to see with his tongue

03/16/2010 | BBC

A British soldier who was blinded by a grenade in Iraq has been taught to "see" using a device that converts visual images into electrical pulses that are applied to the tip of his tongue. The device, which looks like a lolly pop and produces a tingling sensation likened to licking a battery, lets users read text and view 2-D images of the world around them.

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