What is not a feature of carotico-cavernous fistula?
Ans DCaraticocavernous fistula is mostly secondary to penetrating trauma associated with fractures of the facial bone and this leads to pulsatile exophthalmos which coincides with pulse. On imaging the shunting of blood from artery to vein is so fast that only the superior ophthalmic vein which is carrying extra blood volume is identified. The actual fistula can be demonstrated on digital subtraction angiography
Pulsatile exophthalmos
Generally post traumatic
Dilated superior ophthalmic vein
Can lead to spontaneous intra orbital hemorrhage
Nervous System