ISOLATED BILATERAL ABDUCENS NERVE PALSY DUE TO CAROTID-CAVERNOUS DURAL ARTERIOVENOUS-FISTULA

Carotid cavernous dural arteriovenous fistula (DAVF) usually presents with conjunctival injection, proptosis, loss of visual acuity and opht halmoplegia. There have been some carotid cavernous DAVF case reports presenting with isolated oculomotor, abducens and trochlear nerve pals y. We experienced a patient presenting with bilateral abducens nerve p alsy and no other ocular signs who was diagnosed as carotid cavernous DAVF after conventional angiography. According to this case, carotid c avernous DAVF should be considered in the differential diagnosis of is olated bilateral abducens nerve palsy, in which case conventional angi ography may be helpful in diagnosis.