The visual acuity of 0.25 for a 10-year-old child is below normal. If it is due to refractive error after examination, glasses are needed to correct it. However, if it is not caused by refractive error, even wearing glasses is not effective. Under normal circumstances, a 10-year-old child’s visual acuity has developed to 1.0, and the current visual acuity of 0.25 is significantly lower than that of his peers, so the patient needs to further undergo an optometry examination to clarify whether the vision loss is caused by refractive error. If the vision loss is caused by refractive error, the patient should wear glasses to correct the refractive error and improve vision. However, if it is found that the vision loss is due to a non-refractive disease, it cannot be corrected by glasses, e.g. cataracts need to be treated by surgery. It is recommended that children with vision loss seek medical attention to evaluate their condition and follow the doctor’s instructions for treatment.