According to the World Health Organization, 285 million people worldwide are visually impaired. Thirty-nine million are blind, while 246 million have low vision. 

Bradley Greger, an associate professor at ASU, is partnering with a California-based company called Second Sight on technology that can be placed on the retina to provide a limited amount of vision to blind people. He’s also working on a brain implant that will provide some vision for the blind. He’s with me to talk about it.