Re:A couple of question about this: (Score 1)

One possible way would be to have glasses made of a lcd crystal that can apply a phase delay to the light passing through. The problem is that you need to know where each eyeball is pointing so that you know where on the glasses to apply the correction. This implies some sort of eyeball tracking system. If you are looking straight ahead, the glasses would have to put a special phase aberration in the center of the glasses, but as your eye moves around, this phase aberration would have to shift to track where you are looking. Not really practical... Plus it would suck when your glasses ran out of batteries.