Strabismus correction surgery is now a well-established and relatively safe procedure. The most common problem with surgery is inadequate correction. Because strabismus is an adjustment of the position and length of the muscles that move the eye based on the patient’s type of strabismus, the degree of strabismus and other factors, undercorrection or overcorrection may occur surgically due to individual differences, but can be corrected surgically again. Strabismus surgery is performed outside of the eye, so it does not usually affect vision, and even if the surgery fails, it does not result in vision loss. A common problem is usually diplopia after surgery, but the child’s visual system is very malleable, so diplopia usually disappears, and if the strabismus is completely corrected, diplopia may promote the development of binocular vision in the child. In adults, the vast majority of post-surgical diplopia disappears, and very few people who do not disappear will gradually adapt to it without affecting their lives and work. Strabismus surgery is performed on the conjunctiva on the surface of the white eye and does not leave a scar on the eyelid that affects the appearance. In short, the risks and after-effects of surgery are nothing compared to the dangers of strabismus itself!