The best time to treat strabismus is inversely proportional to age. The younger the age, the better the recovery. Although the incidence of strabismus is low, it causes far more distress and is far more tedious to treat than other refractive vision problems, especially strabismus treatment requires attention to the fact that the timing of treatment is inversely proportional to age. Strabismus is first and foremost a cosmetic concern, and this is the main motivation for patients to seek medical attention. More importantly, strabismus affects the visual function of both eyes and in severe cases there is no good stereopsis. Stereopsis is an advanced visual function that only humans and higher animals have, and is one of the prerequisites for people to perform fine work. Studies have shown that early correction of strabismus around 2 years of age has a better prognosis, and the older the age, the more difficult it is to recover from sensory abnormalities. External strabismus has a chance of restoring binocular visual function even when operated at an older age. Internal strabismus with early onset has little chance of restoring binocular vision if the eye position is not corrected before age 5 when binocular vision development is not complete. Without good stereo vision, there will be significant limitations in learning and employment. In principle, pediatric strabismus should be treated surgically as soon as it is detected. Generally speaking, the best age for strabismus treatment should be before the child is three years old. Shenyang Aier Eye Hospital strabismus treatment specialist Dr. Yang Jiwen said that children’s vision is gradually developing and maturing, so parents should pay special attention to bringing their children to the hospital as soon as possible if they have strabismus, a large difference in the prescription of both eyes, congenital cataract, corneal clouding, complete ptosis, medical eyelid masking or high refractive error without refractive correction glasses.