A normal 8-year-old child should have a visual acuity of 5.0 and above, at which point a visual acuity of 4.8 is considered a mild loss of vision. The normal visual acuity of an 8-year-old child is the same as that of an adult, i.e., the naked eye visual acuity is 5.0 and above, and if the visual acuity is lower than 5.0, then it means that there is a loss of visual acuity. Therefore, it is not normal for an 8-year-old child to have a visual acuity of 4.8. It is recommended that the child go to the hospital for a complete examination of visual acuity, visual field, fundus, etc., to determine whether the child has a refractive error or other eye diseases. If the child has a true mild myopia, you need to wear a concave lens to correct; if there is farsightedness, you need to wear a convex lens to correct; if there is amblyopia, you need to carry out amblyopia training in a timely manner; if it is caused by ocular diseases, such as conjunctivitis, keratitis, etc., you need to actively treat the original disease, so as not to aggravate the situation of visual acuity loss. All in all, 8-year-old children’s eyesight 4.8 is not normal, need to go to the hospital in time to clarify the diagnosis and give targeted treatment.