视网膜中央动脉阻塞（ＣＲＡＯ）是眼科一种急重症，多发生于老年人，多为单眼发病，左右眼发病率无差别。如果因血管运动神经功能不稳定而发生的血管痉挛，在高血压动脉硬化基础上，因血管痉挛或局部血栓形成或栓塞而使视网膜动脉主干阻塞或心内膜炎脱落的栓子所致的视网... Central retinal artery occlusion (CRAO) is a critically ill ophthalmology, mostly in the elderly, mostly monocular disease, the incidence of left and right eyes no difference. If vasospasm due to instability of the vasomotor nerves results on the basis of arteriosclerosis due to hypertension and embolism due to vasospasm or local thrombosis or embolism that causes obstruction of the main retinal artery or endocarditis network...