老年人较长时间操作电脑终端视疲劳的分析及防治  

The discussion of clinical analysis and prevention methods of VDT visual fatigue

作　　者：夏群[1] 卢光[1] 王笑雄[1] 关航[1] 楮德发[2] 

机构地区：[1]卫生部北京医院眼科,100730 [2]卫生部北京医院统计室,100730

出　　处：《中华老年医学杂志》2003年第12期732-734,共3页Chinese Journal of Geriatrics

摘　　要：目的　探讨老年人较长时间操作电脑终端 (VDT)视疲劳的临床表现及防治方法。　方法　对 4 5例患者进行眼部检查 ,检测患者的屈光状态和老视 ;并检查眼位、眼肌运动和泪液功能等。　结果　中间距离矫正镜与 33cm阅读距离老视矫正镜之间相差平均 0 5 2DS(P <0 0 0 1)。 4 2例 (93 3% )有隐斜视 ,2 0例 (44 4 % )内融合不足 (<2 5°) ,37例 (82 2 % )泪液分泌缺乏或不足 ,33例(73 3% )泪膜破裂时间 (BUT) <10s缩短。经对症治疗后 ,39例 (86 7% )视疲劳症状改善或减轻 ,泪液分泌试验和BUT好转 ,而患者的屈光、老视、融合等视功能未发生变化。　结论　老年人VDT视疲劳的发生与老年人眼的调节、辐辏功能下降、过度用眼负荷、不合理的镜片矫正、不良周围环境等多因素有关。应从上述环节入手 ,预防和治疗VDT视疲劳。Objective To investigate the manifestation and the prevention means of video display terminal (VDT) visual fatigue in old people. Methods Conventional eye inspection were performed for 45 patients, including optical muscle movement, position of eye, confluence function and presbyopia. Results We found that the average difference between middle distance correcting lens and 33 cm reading distance from presbyopia correcting lens was about 0.52 DS( P <0.001). Among them, 42 (93.3%) patients were phoria, 20 patients(44.4%) were internal confluence insufficiency (<25 degree ), and 37 patients(82.2 %) were oligodacrya. In 33 patients (73.3%), the tear break time(BUT<10 s) were shortened. After treatment, the visual fatigue in 39 patients were ameliorated or relived. The tears secretion test and the BUT were improved. But the visual function such as refractive error and presbyopia showed no changes. Conclusions The pathogenesis of VDT visual fatigue in the elderly is related to the decreased accommodation and convergence of old people, overused eyes, long time operating computer, unreasonable lens correction, poor enviroment, and original eye and systemic diseases of the patients. Symptoms of visual fatigue can be prevented, treated or relived by focusing on above factors.

关 键 词：老年人 电脑 操作 防治 视疲劳症 泪液分泌 

分 类 号：R771[医药卫生—眼科]