Patients blind from AMD regain sight with pioneering device

On the left is a simulation of a patient's vision with macular degeneration, and on the right is a imulation of the patient’s vision enhanced with the Prima device. — Palanker Lab/Stanford Medicine/dpa

People who have lost their vision because of a common, but untreatable, age-related condition are now able to read again thanks to a pioneering electronic eye implant. 

The tiny Prima device is just 2mm by 2mm and has half the thickness of a human hair.