“…Direct fistulas (type A in Barrow's classification) are usually caused by penetrating or blunt trauma. In contrast, indirect fistulas (types B, C, and D in Barrow's classification) are generally caused by nontraumatic conditions such as hypertension, fibromuscular dysplasia, type IV Ehlers-Danlos and internal carotid artery dissection [3] . The clinical presentation in patients with CCF is often associated with ophthalmic disturbances, such as ophthalmic monoplegia, ptosis, loss of sensation in the distribution area of the trigeminal nerve, exophthalmos, facial pain, chemosis, Horner's syndrome, and headache [4] .…”