Ten years ago, it was hard to imagine that a blind person could restore vision with the help of prosthetics. Our protagonist did. Gregory performed operations to insert an implant into the retina. After a long period of rehabilitation, he successfully use their new ‘bionic’ vision. Today, science is on the verge of another amazing technological breakthrough: an implant for the visual cortex of the brain is being tested, and is tested right before our very eyes. So far, testing is conducted on monkeys. The dramatic stories in the film alternate with scientific conversations about the device and the true meaning of vision.