Abstract
Myasthenia gravis (MG) is an autoimmune disease caused by autoantibodies to the acetylcholine receptors of the neuromuscular junction characterized by weakness and abnormal fatigability of the muscles. Therefore, the diagnosis of MG depends on the recognition of this distinctive pattern of fatigable weakness. Previous studies presented the diagnostic efficacy of saccadic eye movements in patients with ocular MG. We here in report 2 patients of ocular MG showing the fatigue effects during repetitive sustained smooth pursuit, and the effects of the administration of edrophonium on myasthenic smooth pursuit. Changes in smooth pursuits reflecting peripheral and secondary central mechanisms were demonstrated. Keywords: Myasthenia gravis; Video-oculography; Smooth pursuit; Fatigibility ì¤ì¬ ë¨ì´: ì¤ì¦ê·¼ë¬´ë ¥ì¦, ë¹ëì¤ì구ì´ëê²ì¬, ìíì¶ì¢ ì´ë, ê·¼í¼ë¡ë
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