Features of carotid-cavernous fistula include
* With anterior drainage through orbit carotid cavernous fistula produce proptosis, diplopia, glaucoma and corkscrew, aerialized conjunctival vessels carotid-cavernous fistula results from an abnormal communication between the aerial and venous systems within the cavernous sinus in the skull. It is a type of aeriovenous fistula Ref Harrison20th edition pg 2567
Dilated superior ophthalmic vein on CT scan
Blood in the Schlemm's canal
Proptosis of contralateral eye suggests bilateral carotid-cavernous fistula
Traumatic fistula rarely close spontaneously
C.N.S