Clinical and Electro-Oculographic Characteristics of Ocular Flutter

J Korean Neurol Assoc > Volume 22(2); 2004 > Article

Journal of the Korean Neurological Association 2004;22(2): 122-126.

안조동의 임상 소견 및 안전도 기록의 특징

고성호, 김승현 강성수 김주한 김명호

한양대학교 의과대학 신경과학교실, 은혜병원*

Clinical and Electro-Oculographic Characteristics of Ocular Flutter

Seong Ho Koh

Department of Neurology, Hanyang University College of Medicine, Eunhye Hospital

Abstract

Background: Ocular flutter is a rare horizontal eye movement disorder characterized by rapid saccadic oscillations. Excessive discharge of burst neurons, and/or loss of tonic excitation of pause cells cause ocular flutter in several neurologic diseases. Ocular flutter can be easily differentiated from other saccadic oscillations with the aid of electro-oculography (EOG) findings showing an absence of intersaccadic intervals.
Methods: We analyzed EOG findings of ocular flutter in four patients.
Results: Ocular flutter, which was shown as rapid, repetitive, horizontal, symmetrical, and sinusoidal movements without intersaccadic intervals on EOG, was confirmed in four patients. The etiology of each patient was olivopontocerebellar atrophy (1 case), meningoencephalitis (2 cases), and lithium intoxication (1 case).
Conclusions: Ocular flutter can be present in numerous neurologic diseases. Characteristic EOG findings are useful in the diagnosis of ocular flutter. Key Words: Ocular motility disorder, Saccades, Olivopontocerebellar atrophy, Meningoencephalitis, Electrooculography