Children watching TV with slanted eyes can be caused by sitting in the wrong posture, strabismus and refractive errors. 1. Incorrect sitting posture: If a child is sitting crookedly or if the child’s eyes are not directly facing the TV screen when watching TV, the performance of watching TV with slanted eyes will occur. 2. Strabismus: Strabismus patients have abnormal coordination and function of eye muscles due to various reasons, which results in eye position skewing, leading to tilting of head and squinting of eyes when the child watches TV. 3. Refractive error: Refractive error includes hyperopia, myopia and astigmatism, which can cause the child to have unclear vision when looking straight ahead and relatively clear vision when looking diagonally, which will lead to the performance of watching TV with squinted eyes. When children watch TV with squinted eyes for a long time, it is recommended that they go to the ophthalmology department of the hospital in time to assess their condition and follow the doctor’s instructions for treatment.