The incidence of oculomotor paralysis caused by cerebral aneurysms was about 16.5% . Arteriae communicant posterior cerebri were liable to cause the disease about 40% of total aneurysms communicans posterior.

• 脑动脉瘤致动眼神经麻痹的发生率约占全部脑动脉瘤的16.；5%25；后交通动脉瘤最易导致动眼神经麻痹；约占全部后交通动脉瘤的40%25。