Thirty totally blind people are wearing the Argus II new retinal implant costing $100,000.  With it, they can see around obstacles, observe changes in light and look at someone who is talking to them. Without the device, their diseased retinas made it impossible to see anything.

The Economist notes that this technology is where cochlear implants for the hearing impaired were 26 ¬†years ago. They’ve come a long way since then and are now routine. The new artificial retinas will also be common some day among people who have lost theirs to disease or injury.

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