Isolated traumatic laceration of the superior oblique muscle

Traumatic laceration of extraocular muscles often occurs in the context of severe ocular and orbital injuries. Isolated lacerations are rare. This report describes the clinical and surgical findings and mechanisms of trauma of 2 patients with superior oblique muscle laceration caused by a carpet-weaving hook. There were no other significant ocular or orbital injuries. Surgical exploration revealed laceration of the superior oblique muscle proximal to the trochlea associated with avulsion of the trochlea.