title: Upper eyelid retraction after blowout fractures.
abstract: Two patients developed upper eyelid retraction secondary to a blowout fracture of the orbital floor. Posttraumatic overaction of Muller muscle is a possible cause of the eyelid retraction.
mesh_terms: D000328:Adult; D005141:Eyelid Diseases / Q000209:etiology*; D050723:Fractures, Bone / Q000150:complications*; D006801:Humans; D008297:Male; D009801:Oculomotor Muscles / Q000294:innervation / Q000503:physiopathology; D009915:Orbit / Q000293:injuries*