Hi, I just recently went through this with my daughter, although she is 7 (turned 7 on 12/8). Anyways, there were NEVER any signs of vision problems with my daughter. I just decided to take her to the Optometrist because our health insurance paid for it. I took her to a "Pediatric Developmental Optometrist", and come to find out, she had the worst vision he had seen in a long time and possibly needed bifocals, etc..etc. Mind you, she had been screened in school for 2 years, her pediatrician screened her, but they never found anything abnormal. My pediatrician referred us to a Pediatric Opthamologist, through Children's Hospital, and he said that it was never caught because she had learned how to compensate for it. (She had lived like this for 6 years). Anyways, he said she is definately not the worst. She's just a kid who needs glasses. She does have a fairly strong prescription for someone her age, but he sees that "getting better with time, as her eyes elongate and change shape." Anyways, I would highly suggest getting her eyes checked. I was please with both my optometrist and opthamologist, but that's just a total personal thing. I have noticed that since my daughter has gotten her glasses (about 2-3 months now) she is much happier in school, enjoys reading, doing homework, etc. Her teacher even comments on what a difference there is. I have done a lot of research/reading and everything I've read says that you should really have their eyes checked as early as 6 months. Anyways, good luck!!!