Why is it, do you suppose, that the tendency for near-sightedness (or other vision problems) stayed with humans, through the evolutionary process.
Doesn’t it seem like the gene for good vision would have been more successful than it seems to have been? Maybe it’s multiple genes for multiple vision disorders, but still.Do you think that animals have as many vision problems as humans do? And if not, is it because their eye-brain connection, or their eye structure, is somehow less complicated?
Sometimes I wonder how I would have survived to adulthood, if I had been born in a time without any kind of corrective lenses. And if I (or rather, my great-to-the-nth-power grandmother) didn’t survive, how did she pass on this horrible vision?
It doesn’t seem to me that humans have over-developed our other senses to make up for the fact that our sight is so downright undependable. And we’re a prey animal, as well as a predator. It’s hard to imagine other prey animals (say, gazelles) running into trees or something because their distance vision isn’t good. Or if they did, then they’re certainly not living to pass down that trait.