External strabismus correction surgery is a very common surgical procedure in ophthalmology. The procedure involves the patient lying supine on the operating table, routine disinfection, head wrapping, and sterile cavity wipes, then propping the operated eye with a lid opener, flushing the conjunctival sac with saline, subconjunctival infiltration anesthesia with 2% lidocaine, making a temporal incision to hook out the external rectus muscle, separating and cutting the nodal ligament, retracting and fixing the external rectus muscle to the superficial sclera, making a nasal bulbar conjunctival incision, hooking out the internal rectus muscle, separating and cutting the nodal The nasal bulbar conjunctival incision was made, the internal rectus muscle was hooked out, the nodal ligament was separated and cut, and the internal rectus muscle was shortened and fixed at the end of the muscle stop. Intraoperatively, the eye position was observed and the sutures were adjusted, the conjunctival incision was sutured, tobramycin dexamethasone ophthalmic ointment was applied, the operated eye was bandaged, and the operation was completed.