The result is generally better after the surgery for strabismus, but there is a certain possibility of recurrence, the specific probability of recurrence is related to the patient’s condition and postoperative care. Esotropia is mainly caused by heredity, high farsightedness and other factors, and it may also be induced by infants looking in the same direction for a long period of time or sleeping on the same side, and patients may manifest unilateral or bilateral black eyeballs leaning towards the inner side of the eyes, double vision, visual fatigue and other uncomfortable symptoms. Patients can be treated by surgery, which is generally more effective, but there is a possibility of recurrence. Patients with internal strabismus can have strabismus correction surgery to adjust the position and direction of the eyeball, so as to restore the patient’s eye position to normal. After surgery, patients need to develop good eye habits to avoid re-skewed eye position. Patients with strabismus are advised to follow the doctor’s instructions, have regular checkups, and consult the doctor when discomfort occurs.