The choice of eyes for alternating esotropia surgery depends mainly on the size of the strabismus, and for a small range of degrees, the patient may choose to have one eye. For alternating strabismus or other types of strabismus, the choice of surgery for one eye or both depends on the size of the strabismus. For strabismus of 15 degrees or less, a single muscle corrective surgery for one eye can achieve a better result, with less damage to the eye for a quicker recovery. If the degree of strabismus is larger, up to about 30 degrees, due to the length of the single muscle can be shortened and the number of degrees can be corrected is limited, then we have to choose both eyes or multiple extraocular muscles for surgery. It is recommended that patients with strabismus should consult a doctor in time to assess their condition and choose the appropriate treatment under the doctor’s advice.