Abstract
Two cases of blepharoptosis subsequent to embolization of a dural arteriovenous fistula in the region of the cavernous sinus are described. The patients were treated by catheterization of the superior ophthalmic vein after incision of the upper eyelid. Patient 1 exhibited severe blepharoptosis that was thought to result from weakness of the levator muscle and subsequent prolonged swelling of the conjunctiva and eyelid, a characteristic symptom of dural arteriovenous fistula. Patient 2 exhibited mild blepharoptosis that was probably caused by partial damage to the levator muscle as a result of suturing of the upper eyelid. We shortened the levator muscle in both patients and achieved good functional and cosmetic results. In neither patient was there a recurrence of the dural arteriovenous fistula.
