80% of learning is through the eyes. Children as young as 6 months old can and should have their eyes evaluated. Any problems should be resolved early so the eyes and brain can continue to develop together to provide normal vision and depth perception. School-aged children do not necessarily tell you if they are having vision-related problems because they often don't realize it themselves. Vision-related problems can impair their ability to learn and excel.
Vision-related problems can sometimes be observed with rubbing eyes often, holding books too close or too far away, headaches, eyestrain, double vision, loss of place with reading, attention or poor reading comprehension for an otherwise bright-child.