A patient developed proptosis and diplopia of 2 months duration following injury. On examination there is chemosis, conjunctival redness, and external ocular nerve palsy. Investigation of choice is:
Ans. (d) Intra-arterial digital subtraction angiographyRef: Kanski 7/e, p. 95, 96History of trauma with proptosis, chemosis and ophthalmoplegia indicates carticocavernous fistula* Investigations: CT and MR may demonstrate prominence of the superior ophthalmic vein and diffuse enlargement of extraocular muscles. The ultimate test, however, is selective arteriography of both internal and external carotid arteries.
MRI
CECT
MR angiography
Intra -arterial digital subtraction angiography
Orbit