Normal visual acuity for a nine-year-old child should be 5.0 and above, and a visual acuity of 4.8 is considered low vision.
In terms of the growth and development of vision, the normal range of logarithmic visual acuity for a child around the age of seven reaches 5.0 and above. The child is already nine years old, vision 4.8 is certainly not normal, need to go to the hospital for a detailed dilated optometry, fundus examination, to determine whether there is refractive error or eye disease.
If the child is diagnosed with pseudomyopia, the symptoms can be reduced after correcting bad eye habits. If true myopia or astigmatism has developed, the child will need to wear glasses of the appropriate prescription to correct his or her vision. If the vision loss is caused by glaucoma, fundus lesions, etc., it is necessary to actively treat the primary disease.
All in all, the nine-year-old child’s eyesight 4.8 is not normal, it is recommended to consult a doctor in time to clarify the cause, for targeted treatment.