Interesting, yeah. I bet that'd be an interesting thing to find out about even, maybe eventually brain scan technology will be cheap and powerful enough that you could look into it for a lark:).

That book mentioned that approximately 50% of the brain (or 50% of the cortex at least?) Is dedicated to vision, and there's evidence I guess for tissue that'd normally take on one function to end up doing something else if the normal input feed's down for some reason. With only half the visual input coming in when you were that young, seems like that's a lot of computational hardware that's freed up for something else. Maybe you've got some only vaguely noticed superpower you'd be surprised other people don't have, who knows?

Edit: one last thing you might find interesting. Elsewhere in this thread actually, there was a discussion about biological inspiration behind convolutional neural networks from the field of machine learning and artificial intelligence. The inspiration was from Hubel and Wiesel, two really foundational Neuroscience researchers in the late 1950's and 1960's. They won the Nobel prize for their work, one critical experiment of which involved keeping one eye of a kitten closed and seeing how it changed their development. I don't know the details of their findings, but given the historical significance of that research, I bet your case actually has a lot of understanding behind it. Just wondering out loud more than sharing anything specific, but interesting that Hubel and Wiesel more or less came up in two comment threads here.