Children with learning difficulties should not be easily called “stupid”. Domestic and international studies show that most children with learning difficulties have visual defects. Reading with misalignment and missing words is related to eye movement deficits; visual focus deficits can cause visual fatigue and learning difficulties; learning difficulties are manifested in the inability to distinguish between words that are close in shape, such as “Wang” and “Yu”; frequent misspellings; children with slow reading speed are often Other learning difficulties, such as: blindness to certain targets; slow writing; ugly handwriting; slow reaction; poor comprehension; easily reversing letters or numbers when writing, such as writing “b” as “d”; inability to read for long periods of time These are all related to various visual dysfunctions such as deficits in visual contour and spatial relations, visual memory, hand-eye coordination, visual orientation and spatial orientation. Therefore, parents should consider whether their children have eye problems when they have poor academic performance.