I still remember how weird it felt with the first cellphones, people looked like talking to themselves.
I could imagine something like "corrective lense" (heh, retina based haha) that goes in front of your eye/eyes, and "projects" in such way that it positions for your brain a virtual image in front of you - HUD display with some kind of UI - and then using voice, or... well awkward (but maybe not in the future) - you use your hands, as if in front of you there is some kind of input device - yet, it's only projection in your eyes.
Some kind of AR is needed to pretend that what's projected to your eyes, in these iLenses :), can go behind the hands, as if you are typing stuff there.
