Under normal circumstances, the naked eye visual acuity of 1.0 is in line with the normal visual acuity standards, and the child’s naked eye visual acuity can reach 1.2, indicating that the visual acuity is well developed. Visual acuity is an indicator that reflects the degree of visual acuity, that is, the ability of the eyes to distinguish the details of the scene, the visual acuity is good or bad with the refractive state of the eyes, the density of photoreceptor cells on the retina and so on are related. Under normal circumstances, a normal person’s naked eye vision can reach 1.0 or more than 1.0, so a child’s visual acuity of 1.2 is normal, indicating that the child’s eyesight is good. Myopia, congenital cataract, retinal detachment, etc. can cause vision loss in children, and patients need timely treatment to improve their vision. Patients with vision loss are advised to seek prompt medical attention to assess their condition and follow the doctor’s instructions for treatment.