Table 3. Causes of lower eyelid retraction and surgical procedure performed.

MRD2 = margin reflex distance 2; OD = right eye; OS = left eye; TAO = thyroid-associated orbitopathy; BOF = blow-out fracture; HT = horizontal tightening; LTS = lateral tarsal strip procedure; SOOF = suborbicularis oculi fat; DCR = dacryocystorhinostomy.

^*Exophthalmos was of an unknown cause.