This is surgery to correct ocular misalignment (strabismus). Most strabismus surgery is performed on toddlers to correct alignment problems such as crossed-eyes. This surgery involves the weakening or strengthening of eye muscles by shortening them or changing their insertion points on the edge of the eye. While most ophthalmologists have trained in performing strabismus surgery, these days the procedure is mostly carried out by pediatric ophthalmologists who have more practice with this type of surgery. Many pediatric ophthalmologists perform adult strabismus surgery as well.