Management of strabismus in thyroid eye disease.

Thyroid eye disease is an auto-immune condition characterised by an acute inflammatory phase followed by a fibrotic phase, which sometimes leads to restricted eye movements and diplopia. Medical treatment with systemic steroids with or without orbital radiotherapy and immunosuppression can control the inflammatory response. Strabismus surgery should be carried out only after the inflammation is no longer active and after any decompression surgery. Surgery comprises recession of tight muscles using adjustable sutures so as to maximise the area of binocular single vision. There is debate as to whether adjustable sutures should be used for the inferior rectus muscle. Patients should be encouraged to have realistic expectations, as binocular single vision may not be achievable in all directions of gaze and lid retraction may be made worse by surgery.