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硬膜下血肿(subdural hematoma,SDH)引起失明常由于枕叶梗塞所致。其机制一般认为是天幕疝时大脑后动脉受压而引起的。Lindenberg等从尸检研究和SDH存活者中发现,外侧膝状体视路损害时也可引起视力障碍。Keane报告7例天幕疝引起视力减退者中,3例有视神经萎缩。Walsk等发现2例相似的SDH引起视神经萎缩。本文报告1例SDH患者具有视交叉前盲的电生理证据和颅内视神经梗塞的神经病理学证据。
Subdural hematoma (SDH) causes blindness often due to occipital infarction. The mechanism is generally believed to be caused by the posterior cerebral artery compression of the hernia. Lindenberg and other autopsy studies and SDH survivors found that the lateral geniculate pathological damage can also cause visual impairment. Keane report 7 cases of skull-shaped hernia caused vision loss, 3 cases of optic atrophy. Walsk et al. Found two similar SDH-induced optic atrophy. This article reports one case of SDH patients with electrophysiological evidence of anterior optic chiasm and neuropathological evidence of intracranial optic nerve infarction.