This Bionic Eye Could Cure Blindness

We’ve long known some of the biological and anatomical reasons for blindness, but the key to replicating sight lies in understanding the electrical impulses that pass from the eye to the brain. Three years ago, neuroscientist Sheila Nirenberg cracked this code.

"It had a huge potential application,” she says. “We could use this to create a prosthetic device for the blind.”