Visual acuity of 0.6 at the age of 8 needs to be treated because normally visual acuity at the age of 8 should be 1.0, and 0.6 is obviously lower than the normal value, which needs to be ruled out firstly for organic eye diseases, and then consider that it may be caused by refractive error, amblyopia, and so on. It can be treated by wearing eyeglasses and so on. 1. Refractive error: refers to the eye in the state of relaxation, parallel light from 5m away can not form a focal point in the macular center of the retina after the refractive action of the eye refractive system, and the vision can be corrected by wearing framed glasses or corneal contact lenses. 2. Amblyopia: an eye disease in which the corrected visual acuity of one eye or both eyes is lower than that of normal children of the same age, which needs to be treated by emphasizing on the correction of strabismus and refractive error, as well as the training of macular fixation and fusion function and other aspects of comprehensive treatment. If the symptoms of 0.6 visual acuity at the age of 8 persist without relief, timely medical treatment is needed to reduce the adverse effects of the disease.