Fig. 12 Dural-type carotid cavernous fistula with acute glaucoma. A. Arterialized episcleral, limbal vessels with shallow chamber and tension of 35 mm Hg. B. Fluorescein angiogram shows nasal choroidal detachment with multiple areas of blocked fluorescence due to concomitant venous obstruction. C. B-scan ultrasonogram demonstrating serous choroidal detachments. D. Selective internal carotid arteriogram showing filling of the cavernous sinus (CS) from the meningohypophyseal branch (MH) of the internal carotid artery (1CA).