Take your child to an optometrist for a thorough eye examination before age three and again before entering school. Early diagnosis is important to treatment. Vision problems among the very young are generally uncommon. Crossed-eyes involve one or both eyes persistently turning inward, outward, upward or downward. If you notice this, it is time to see an optometrist, as untreated crossed-eyes can lead to other vision problems.
Lazy eye is one of the most serious.
It involves a loss of sharp, clear central vision in one eye which cannot be corrected with glasses. Lazy eye may occur for other reasons, and it usually has no noticeable symptoms. The learning years Changes in your child's vision may occur during the learning years, but he or she may not realize a problem exists because a child assumes everyone sees the way he or she does. Vision problems can affect your child's ability to learn, since 80 percent of learning activities involve vision. Problems may range from seeing a blurred chalkboard to reading difficulties stemming from poor eye movement, focusing and coodination.