When a 7-year-old child has a visual acuity of 0.6, the first step is to paralyze the ciliary muscle of the child, which is often called dilated pupil, and after dilating the pupil, an optometric trial is conducted. If the visual acuity does not reach 1.0 after the trial, you need to ask a professional doctor to find the cause and exclude other organic diseases of the eye, and then consider that it should be amblyopia. Amblyopia treatment requires glasses correction, amblyopia training, and adequate stimulation of the amblyopic eye.