Not really possible (Score 1)

Remember: during development, the optic nerve is part of the brain itself, and the amount of circuitry inside the brain proper which is tuned for visual processing is immense. Getting individual pixels into the brain -- the current accomplishment -- is of course a technical acheivement. But processing it like sighted people do is a challenge of similar magnitude to brain transplants. On the other hand, it might be possible for those who've lost their vision. (But those blind since birth is another story entirely.)