Children with visual acuity of 4.7 should consult a doctor in time to find out the cause of the cause of the remedies, myopia caused by reduced vision should be corrected in time with prescription glasses, amblyopia caused by reduced vision should be timely vision training to promote visual development, the eyes caused by organic lesions of reduced vision should be eliminated in a timely manner. 1. Myopia: children’s vision loss may be caused by myopia, children can determine the number of refractive error through optometry, if it is determined that myopia is caused by myopia, children can be framed glasses, keratoplasty, etc. to correct myopia and slow down the development of myopia, improve vision. 2. Amblyopia: Amblyopia is also a common cause of vision loss in children. Children should seek medical advice in time to eliminate refractive errors, strabismus and other primary factors leading to amblyopia, and visual acuity training can be used to stimulate the development of visual acuity and promote visual acuity improvement. 3. Organic eye lesions: Ocular trauma, conjunctivitis, mild congenital cataract and other organic eye lesions can also lead to vision loss, eliminating the cause of vision will have a certain degree of improvement, such as cataract ultrasonic emulsification combined with IOL implantation, etc., to improve the child’s vision. It is recommended that children with vision loss consult a doctor to evaluate their condition and follow the doctor’s instructions for treatment.