External strabismus of the eye can be corrected by medication and surgery. 1. Medication: Botulinum toxin A can be injected into the eye under electromyographic monitoring to correct small to medium degrees of esotropia, postoperative residual esotropia, acute paralytic esotropia, etc. The medication should be administered according to the doctor’s instructions. The medication should be used according to the doctor’s prescription. 2. Surgery: External strabismus of the eye is mainly treated by surgery, and the timing of surgery should be grasped before the visual function of both eyes is impaired, and the surgery can be delayed if the stereoscopic vision is normal under close follow-up. When visual function is found to be impaired, early surgery is generally advocated. It is recommended that the patient go to the ophthalmology department of the regular hospital for consultation, improve the relevant examination, and carry out the correction of exotropia under the guidance of the doctor.