Sight Device: Blind Man Sees With His Tongue

Craig Lundberg, 24, who was blinded in a rocket-propelled grenade attack three years ago, is the first British soldier to test the BrainPort system.

The device consists of a high-tech 'lollipop' that rests on Craig's tongue. It converts images from a video camera, that he wears on a pair of glasses, into signals that stimulate electrodes on the lollipop.