Analysis of the condition: When hyperthyroidism occurs, the sympathetic nerve is excited, the tension of extraocular muscles increases, and the upper eyelid retracts to make the eyeball protrude. After hyperthyroidism was cured, with the gradual stabilization of sympathetic nerve, the tension of extraocular muscles returned to normal and the eyeball returned to its original position. The treatment of hyperthyroidism is a long process, which takes about one and a half years to be completely cured. It is suggested that exophthalmos caused by thyroid can be divided into invasive exophthalmos and non-invasive exophthalmos. The former is called malignant exophthalmos and can be transformed from benign exophthalmos. Patients with malignant exophthalmos often have photophobia, tears, diplopia, decreased vision, eye swelling and pain, tingling, foreign body sensation and so on. Because the eyeball is highly prominent, the eyes cannot be closed, and the conjunctiva and cornea are exposed, causing congestion, edema, corneal ulceration and even blindness. So if you are non-invasive, only hyperthyroidism can be controlled, and your eyes will naturally get better, but it is difficult to completely return to the original normal state if you are aggressive.