文章基本信息

标题：Selective impairment of the rapid eye movements in myotonic dystrophy
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作者：Kim, Sung-Hee ; Park, Jin-Sung
期刊名称：Korean Journal of Clinical Neurophysiology
印刷版ISSN：1229-6414
出版年度：2019
卷号：21
期号：2
页码：94-97
DOI：10.14253/acn.2019.21.2.94
出版社：KoreaMed Synapse
摘要：The patients with myotonic dystrophy (MD) show ocular motor abnormalities including strabismus, vergence deficits, and inaccurate or slow saccades. Two theories have been proposed to explain the oculomotor deficits in MD. The central theory attributes the defects of eye movements of MD to the involvement of the central nervous system while the muscular theory attributes to dystrophic changes of the extraocular muscles. A 58-year-old woman with MD showed selective slowing of horizontal saccades and reduced peak velocities for both horizontal canals in head impulse tests, while smooth-pursuit eye movements and vertical head impulse responses were normal. This case suggests that the extraocular muscles-as a final common pathway of the voluntary saccade and reflexive vestibular eye movements-may better explain the defective rapid eye movements observed in MD.
关键词：head impulse test; Myotonic dystrophy; Saccades