Vision is one of the first and most useful applications of bionic systems. Our eyes, while they are wonderful, still suck, and are worse than octopus eyes. For a start, the optic nerves in humans go over the retina obstructing light instead of behind it. They then plunge through the retina creating a blindspot. That's like looking through scratched spectacles with a hole in it without being aware that we are wearing a mediocre and busted equipment. We go on happily wearing it because it has always been that way. Pathetic, really. It's about time we started fixing obvious evolutionary stupidities like this. (I can see you shaking your head. You don't agree? Why not?)
So, I for one, would readily embed bionic eyes. But, bionic eyes to enhance 'normal' vision have a long way to go. Nevertheless, any advancement in bionic vision will improve the quality of life for the blind enormously. The current cutting edge bionic eye, reported in the recent Economist magazine, has 1,540 pixels resolution, enough to identify objects but not anywhere near the resolution of biologial eye, which has a resolution in the range of millions of pixels. Not very useful for those with 'normal' vision but still very promising for those who are blind.
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