儿童眼球震颤波形分析

Analysis of children’ nystagmus waveform

目的评价儿童眼球震颤的类型、检测方法、红外视频眼球震颤仪对儿童眼球震颤波形的分析能力及眼球震颤与视力的关系。方法使用MG6B-5型手持式放大镜对148例(296眼)儿童眼球震颤患者检测。81例(162眼)患者行Y-Ⅱ眼球震颤仪检测,15例(30眼)行EYELINK眼动仪检测。111例(222眼)患儿行国际标准视力表检测。对75例(150眼)患儿的眼球震颤图检查和视力进行比较。结果先天特发性眼球震颤121例(242眼),中枢性眼球震颤5例(10眼),前庭性眼球震颤1例(2眼),眼源性眼球震颤21例(42眼)。眼球震颤频率为(2.88±1.37)Hz,振幅(7.88±5.22)度,震强(22.68±11.79)度×Hz。111例患儿矫正视力为0.32±0.22。75例患儿矫正视力与眼球震颤频率、振幅及震强无明显相关性(均为P>0.05)。结论儿童眼球震颤可以使用眼球震颤仪对震频、振幅、震强精确地量化检测,从而对指导病因及治疗进行评价。

Objective To evaluate the type of children＇ s nystagmus, examina- tion, capacity of the videonystagmography and the relationship between the visual acuity and nystagmus. Methods One hundred and forty-eight cases（295 eyes） who were ex- amined by LED magnifier of MG6B-5 type were included,of which 81 cases（ 152 eyes） were examined by Y- ]] videonystagmography and 15 cases（30 eyes） were examined by EYELINK videonystagmography. One hundred and eleven cases（222 eyes） were exam- ined by the international standard visual acuity chart,and the visual acuity and nystagus of 75 cases（ 150 eyes） was compared. R^ulta One hundred and twenty-one cases （ 242 eyes） were congenital idiopathic nystagmus,5 cases（ l0 eyes） were central nystag- mns,1 case（2 eyes） were vestibular nystagmns,and 21 cases（42 eyes） were ocular nys- tagmus. The mean frequency, amplitude and intensity of nystagmns waveform were （2. 88 ± 1.37 ） Hz, （ 7.88 ± 5.22 ） degree, and （ 22.68 ± 11.79 ） degree x Hz, respectively. The corrected vision of 111 cases was 0.32 ± 0.22. The corrected vision of 75 cases was not related to the frequency,amplitude and intensity of nystagmns waveform. Conelusion The nystagmus can be used as accurate quantitative index of children＇ s nystag- mus to detect the frequency, amplitude and intensity, and also provides a guidence to the cause of a disease and evaluates the treatment.