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眼球运动主要分为附属于追随系统和扫视系统的。追随系统运动大都为不随意(视动反应),取决于视网膜传人,通过小脑绒球不断调整。追随系统疾患的临床表现:齿轮状追随运动;维持固定视不良;视动反应减低;抑制前庭输入不够。相反,扫视运动速度则正常。此异常为小脑疾病最常见的特征。另一方面,扫视运动主要与随意注视运动有关,也作为前庭和视动反应的快相。调节扫视运动的神经解剖中心被认为在脑干的网状结构的冲动细胞(Burstcells)和间歇细胞(Pause cells),以交互方式作用。在另一方面,扫视抑制是通过小脑蚓部的背部调节。临床上扫视系统疾患诊断有:扫视运动缓慢(脑桥及基底节变性),起动扫视迟缓(先天动眼运用不能),扫视失控摆动(斜视眼阵挛),对比之下,追随运动正常。这些异常大多数为脑干疾病的特征。但不能精确控制扫视以注视于一点,造成眼辨距不良和眼球扑动样运动。表明还有小脑病变。本文试以临床论证阐述这些原则。
Eye movement is mainly divided into the follow-up system and the saccade system. Follow the system most of the movement is not random (depending on the reaction), depending on the retina, continue to adjust through the cerebellum pompoms. Follow the clinical manifestations of systemic disorders: gear-like follow-up exercise; to maintain a fixed as the poor; reduced visual acuity; inhibition of vestibular input is not enough. In contrast, sacs louis vuitton This anomaly is the most common trait of cerebellar disease. On the other hand, the glance movement is mainly associated with random gaze movements and also serves as a quick phase in the vestibular and visual responses. Nerve anatomical centers that regulate saccade are thought to interact interactively with Burst cells and Pause cells in the brainstem reticular formation. On the other hand, glaucoma suppression is regulated by the back of the cerebellar vermis. Clinical glaucoma disorders are: saccade slow (pons and basal ganglia degeneration), start glaucoma (congenital ocular movements can not), sacs louis vuitton, sacs louis vuitton sac louis vuitton sac louis vuitton sac louis vuitton sac louis vuitton Most of these anomalies are features of brain stem disease. But can not precisely control the glance to look a little, resulting in poor eye alignment and flutter eye movement. Show that there are cerebellar lesions. This article attempts to illustrate these principles with clinical arguments.