Fig. 12. A: Ophthalmoscopy shows no emboli in the left eye of a patient who had experienced an episode of amaurosis fugax. B: No abnormality is seen during the arteriolar phase of the angiogram. C and D: In the venous and recirculation plates, fluorescein leakage is seen at arteriolar bifurcation, indicating endothelial damage caused by microemboli (arrows). (Courtesy of William F. Hoyt, M.D.)