Engineering MIT's Technology Review reports that new generation ocular implants with allow people with degenerative eye disorders to see. One particular word in the following paragraph is a bit worrying:
"The Argus II, the first “bionic eye” to reach commercial markets, contains an array of 60 electrodes, akin to 60 pixels, that are implanted behind the retina to stimulate the remaining healthy cells. The implant is connected to a camera, worn on the side of the head, that relays a video feed."
Rather like megapixels in a camera, the greater the number of electrodes, the clearer the image. Before long it seems possible that having these bionic eyes will become as natural as a false limb.

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