I possibly would never have heard of the lazy eye problem except that my sister wore a patch on one eye for about a year, and then on the other eye for a few months 'cause they decided they'd "overcorrected." I was only 5 or 6 y.o. then, but it did make me "aware" enough to notice comments about it later as treatment seemed to change some.
Much later, I was acquainted with "an elder" who had no treatment, and perhaps as a consequence was very nearly blind in the eye that "refused to point where he was looking."
Unlike for a jackrabbit, being able to look in two different directions at the same time doesn't seem to be a very useful thing for us peoples.