Abstract
Operation for extracranial arterial occlusions causing transient strokes has become common during the past decade. The most common site of such occlusions is the origin of the internal carotid artery. The presence of bruits and performance of ophthalmodynamometry are important in diagnosing arterial occlusion, but the most definitive method is angiography. Operation for arterial stenosis should be done before the artery has become completely occluded.