About 60 percent of students identified as problem learners have undetected vision problems

…Around 60 percent of students identified as problem learners have undetected vision problems, the AOA states. Some common problems in children include nearsightedness (myopia), farsightedness (hyperopia) and imperfection of the eye’s curvature (astigmatism).
Children with vision trouble may rub their eyes, tilt their head to one side, bump into objects, avoid close work, hold reading material close to their face, get frequent headaches and constantly perform below their potential. They may also display behavioral problems, such as short attention span, and in some cases, be diagnosed as having Attention Deficit Hyperactivity Disorder (ADHD). …

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