Amaurosis fugax caused by a dural arteriovenous fistula from the ophthalmic artery.
A 52-year-old man presented with transient monocular blindness that was both spontaneous and exacerbated by exertion. Dynamic orbital CT revealed a delay in the perfusion of the left optic nerve head suggestive of a steal phenomenon. Subsequent selective arteriography demonstrated an arteriovenous fistula between the falx artery originating from the ophthalmic artery and the superior sagittal venous sinus. In the proper clinical setting, a hemodynamic steal should be considered in the differential diagnosis of amaurosis fugax.
Xiong
L
L
Neuroradiology Section, University of Texas Health Science Center, San Antonio 78284-7800.
Li
J
J
Jinkins
J R
JR
D015901:Angiography, Digital Subtraction; D001164:Arteriovenous Fistula / Q000150:complications* / Q000000981:diagnostic imaging; D001766:Blindness / Q000000981:diagnostic imaging / Q000209:etiology*; D003392:Cranial Sinuses / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed