Thank you all. I was able to get her to the optometrist. We ended up with a prescription for reading glasses. I feel badly that I did not catch this sooner. He didn't seem to think that she had tracking issues though. I guess we will try out the glasses and go from there.
It may be worth noting that myopia correlates positively with IQ, and that this correlation is not extrinsic (i.e., not the result of cross-assortative mating). This is confirmed because studies have found that the correlation between myopia and IQ still exists between gifted and non-gifted siblings. One can not say the same for, e.g., the correlation between height and IQ, which exists in the general population but is nonexistent among gifted and non-gifted siblings. In other words, the correlation between height and IQ only exists because both height and intelligence are valued by society, and thus tall and intelligent people are more likely to procreate.
