If it is caused by myopia, the child can wear glasses to correct his/her vision; if it is caused by amblyopia, it can be treated by masking; if it is caused by cataract, it can be treated by surgery; the specific treatment plan is related to the cause of the child’s vision loss. The specific treatment plan is related to the cause of vision loss. 7-year-old children with 0.5 visual acuity need to go to the hospital for optometry, and if it is clear that it is caused by nearsightedness, farsightedness, astigmatism and so on, the children can correct their eyesight by wearing glasses. If the child’s vision loss is caused by amblyopia, in addition to the prescription of glasses to correct refractive errors, but also with the masking therapy and amblyopia training, so that the child’s amblyopic eye vision to improve. In addition, cataract, glaucoma, retinal detachment, etc. can also cause vision loss. Surgical treatments, such as cataract ultrasonic emulsification combined with IOL implantation, trabeculectomy, vitrectomy, etc., are feasible to improve the vision of the child. It is recommended that children with visual abnormalities seek medical attention to evaluate their condition and follow the doctor’s instructions for treatment.