Seven patients with ruptured carotid-choroidal aneurysms were operated on in a three-year period. The anterior choroidal artery was thought to have been left intact in all cases at the operation. However, postoperative angiography revealed impairment of the choroidal circulation in two cases. These were the only patients who developed postoperative morbidity. Preservation of the anterior choroidal artery seems to be of paramount importance in dealing with carotid-choroidal aneurysms.