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[目的]观察计算机视屏显示终端(video display terminal,VDT)作业者视觉异常的临床特点,探讨重度计算机使用者发生青光眼的风险。[方法]以横断面研究,对208例VDT作业者进行问卷调查及常规眼科检查,包括视力、屈光度、裂隙灯显微镜、散瞳前置镜眼底检查、眼压测量、视野检查。根据作业指数,分为低(1~3)、中(4~8)、高(9~16)3组,比较各组视野异常的情况。[结果]在纳入研究的208例中,经全面眼科检查,139例患有不同程度的屈光不正,其中近视125例;视野异常与正常者分别为51例及157例。合并屈光不正的重度VDT作业者有较高的视野异常发生率,组间比较差异具有统计学意义。诊断为开角型青光眼者39例,其中31例(79.5%)合并屈光不正,特别是近视(66.7%,26/39)。[结论]屈光不正者VDT操作时间越长,其视野异常发生率亦随之增高,可能是诱发青光眼的危险因素之一,而近视可能是其视野异常的危险因素。
[Objective] To observe the clinical features of visual abnormalities in video display terminal (VDT) and discuss the risk of glaucoma in severe computer users. [Methods] A total of 208 VDT operators were surveyed by questionnaire and routine ophthalmologic examination, including visual acuity, refraction, slit lamp microscope, mydriasis fundus fundus examination, intraocular pressure measurement and visual field examination. According to the operating index, the patients were divided into three groups: low (1-3), medium (4-8) and high (9-16) groups. [Results] Among the 208 cases included in the study, 139 cases had different degrees of refractive errors after comprehensive eye examination, among which 125 cases were myopic and 51 cases were normal and 157 cases were normal. Severe VDT practitioners with ametropia had a higher incidence of abnormal visual field, the difference between groups was statistically significant. Thirty-nine cases were diagnosed with open-angle glaucoma, of which 31 (79.5%) had ametropia, especially myopia (66.7%, 26/39). [Conclusion] The longer the operating time of VDT in ametropia, the higher the incidence of visual field abnormality may be one of the risk factors of glaucoma. However, myopia may be the risk factor of visual field abnormality.