It just seems to work fine. Before getting them I thought the same but brain adapts very quickly and very effectively. I can't explain what or how the brain does what it is doing but I can judge distance fine, read a book close fine and glance up fine and everything in focus and it all just works.
So can I,
but can you thread a needle?
That was when I suddenly realised I'd got one good eye and one duff one. If I stopped trying to get the cotton in the hole I could see both the eye and the thread pin sharp, but as soon as I tried to put one in the other I couldn't do it, my vision just felt completely 'doolally', like I was cross-eyed. I couldn't fathom why at first, until I closed one eye at a time and found that the pin sharp view was in the right eye only, and I couldn't see a damn thing with my left eye. My brain had adapted just as you say:
by learning to ignore my left eye altogether. It can get away with doing that because the majority of the time I'm not threading needles.
Even now, with glasses, my left eye isn't good enough to do what I used to do with ease. If I were still at work I wouldn't be able to do my job, because I can't align two halves of a joint, a soldering iron, and a piece of solder all in 3D, a task similar to threading a needle, but with four objects instead of two. If I try to do this sort of thing, I get a screaming headache within a few minutes. I keep telling opticians that, but, just like you, they think there's nothing wrong as long as I can read the finest print on their test card, which is a
2D task, not 3D. My current set of glasses aren't good enough, but they are a noticeable improvement on anything else I've ever had, so there's obviously a large element of fobbing off been going on at the opticians for the last 20 odd years.
