[Cortical blindness following arteria vertebralis angiography (author's transl)].

Six patients suffered from cortical blindness following vertebral artery angiography. A connection of the incident with the technical procedure or a particularly great amount of applied contrast material, could not be seen. Vasospasm, stasis of contrast material in the arteria calcarina and a toxic lesion seem possible explanations, because the cortical blindness was fully reversible in all cases within some hours or days. Signs for an arterial embolisation did not exist, a finding, which is consistent with the literature.