Studies suggest that up to 80% of a child's learning occurs through their visual system, with daily visual tasks such as reading, writing, and using technology playing a crucial role. If a child's visual skills are underdeveloped or not functioning correctly, they may have to exert extra effort, which can lead to headaches, fatigue, and other eye strain issues. Parents and teachers should remain vigilant for these symptoms, which may indicate a potential vision problem in a child.