During my son's last pediatrician visit, we found that he has a 20/40 vision, and that he may need glasses (which was enough for him to voluntarily reduce his TV time). Our pediatrician insisted that it is common for kids of that age, and that it might go away, and that there is no need for glasses right now; however, I am skeptical about her diagnosis/prognosis.
I was wondering if any other parents have faced this, and their pediatricians have suggested the same.
EDIT: It has been four years since this question. My son now wears glasses full-time, as his vision has deteriorated. Apparently during puberty the vision gets worse. Also, there are quite a few studies that link myopia to lack of exposure to bright sunlight.