A comparative study on the observation of spontaneous nystagmus with Frenzel glasses and an infrared CCD camera
A comparative study on the observation of spontaneous nystagmus with Frenzel glasses and an infrared CCD camera
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DOI：
10.1272/jnms.71.25
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发表时间：
2004-02-01
影响因子：
1
通讯作者：
Yagi, Toshiaki
中科院分区：
文献类型：
--
作者：
Baba, Shunkichi;Fukumoto, Akiko;Yagi, Toshiaki
目的：目的比较红外线照明CCD相机（IR-CCD相机）与Frenzel眼镜（F眼镜）在观察自发性眼球震颤、眼球震颤发生率和方向以及自发性眼球震颤的频率、振幅和慢相方面的有效性。方法：100例眩晕患者，其中女性53例，男性47例。在进行常规耳神经学检查之前，用眼震电图（ENG）记录眼球运动，并在F眼镜下和通过红外CCD摄像机观察眼球运动。数据收集自在F眼镜或IR-CCD相机下表现出自发性眼球震颤的患者。结果：33例患者在F眼镜下出现自发性眼球震颤。另一方面，在IR-CCD摄像机下，所有患者均表现出自发性眼球震颤。两种系统的眼震频率无显著差异。而自发性眼球震颤患者在红外CCD相机和F眼镜下的振幅和慢相速度值均明显大于正常人。结论：从这些观察和证据，IR-CCD相机可以推荐作为一个更有用的系统和强大的工具，比F眼镜的神经耳科检查。
Objectives: To compare the usefulness of a CCD camera with infrared illumination (IR-CCD camera) over Frenzel glasses (F Glasses) for the observation of spontaneous nystagmus, the incidence and direction of nystagmus, and the frequency, amplitude and slow phase of spontaneous nystagmus. Methods: One hundred vertiginous patients, fifty-three females and forty-seven males participated in this study. Before undergoing routine neurotological examination, their eye movements were recorded by electronystagmogram (ENG) in conjunction with observations of eye movements under F glasses and through an IR-CCD camera. The data was collected from patients who exhibited spontaneous nystagmus either under F glasses or the IR-CCD camera. Results: Thirty-three patients showed spontaneous nystagmus under F glasses. On the other hand, under the IR-CCD camera, all patients examined exhibited spontaneous nystagmus. The frequency of nystagmus was not significantly different between these two systems. However, the amplitude and slow phase velocity exhibited significantly larger values under the IR-CCD camera in patients with spontaneous nystagmus both under the IR-CCD camera and F glasses. Conclusion: From these observations and evidence, the IR-CCD camera can be recommended as a more useful system and powerful tool for neurotological examination than F glasses.