Healthy eyes and vision are a critical part of a child's development. They need good vision to identify objects and master the basics of moving around. Their eyes should be examined regularly, as many vision problems and eye diseases can be detected and treated early. If you are a parent of a toddler or a preschooler, you may often wonder if your child has a vision problem. There is no doubt that eye exams for children are extremely important. According to the All About Vision website, 25% of school aged children have vision problems. This means that early detection of problems can be critical at this early age and require diagnosis.