Ooo, Pook, you're bringing up something about which I read a few years ago. Now I'm going to have to go find that book again. It was about how we can have concious visual focusing and unconcious visual focusing because these are done in two separate parts of the brain.
I remember the study spoke of one man who'd had some brain damage and lost his concious eyesight, but not his unconcious eyesight, so that he couldn't see anything in front of him, but if you threw something at him, he'd be able to catch it.
It was quite interersting. Now if I could remember what book I read it in, that would be a feat! HA!