大学生睡眠时间与视频显示终端综合征症状的关系

探讨西安市高校大学生睡眠时间与视频显示终端(video display terminal,VDT)综合征症状间的关系,为高校学生VDT综合征的综合防治提供参考.方法 采用多阶段分层整群抽样方法,抽取西安市5所高校1 477名在校大学生作为研究对象,采用自编问卷进行个人基本情况、睡眠时间、VDT综合征相关临床症状等资料的收集.通过探索性因子分析、秩和检验等方法,探讨睡眠时间与VDT综合征症状的关系.结果 调查对象每日睡眠时间范围为(4.013.0)h,平均睡眠时间为(7.53±1.02)h/d,其中13.4%的调查者日均睡眠时间≤6 h.随睡眠时间减少,除眼部症状外的其他症状因子得分升高;不同睡眠时间组学生视觉症状因子得分差异有统计学意义(χ2=26.09,P<0.01),且与每日睡眠时间>67 h组和≥8 h组相比,每日睡眠时间≤6 h组的视觉症状程度更为显著(Z值分别为-2.81,-4.94,P值均<0.01).结论睡眠时间与学生VDT综合征视觉症状的发生密切相关,增加睡眠时间对减缓VDT注视带来的重影、视物模糊、视力下降等不良视觉问题具有重要意义.

Association between sleep duration and video display terminal vision syndrome

Objective To examine the association between sleep duration with video display terminal (VDT) vision syndrome.Methods A multi-stage stratified cluster sampling was conducted among 1 477 college students from 5 universities in Xi'an.Data on daily sleep duration, VDT vision syndrome and related visual problems.Relation between sleep duration and incidence of VDT vision syndrome was explored by using factor analysis and Wilcoxon rank sum test.Results Daily sleep duration ranged from 4.0 to 13.0 hours, with an average of (7.53±1.02) hours.About 13.4% of all participants reported sleep duration less than 6 hours.Factor analysis showed that shorter sleep duration associated with higher symptoms except for ocular symptoms.The visual symptoms differed among participants with different sleep duration (χ2= 26.094, P<0.01).Compared with those whose sleep duration higher than 8 hours and those between 7 to 8 hours, more visual symptoms were reported among students with sleep duration less than 6 hours (Z =-2.814, -4.944, P<0.01).No significant differences were found in psychopathological symptoms, musculoskeletal symptoms, ocular symptoms, gastrointestinal symptom and psychotic symptoms (P>0.05).Conclusion Shorter sleep duration is closely related with an elevated risk of adverse visual problems such as ghosting, blurred vision, and vision loss.Sufficient sleep might help reducing the risk for video display terminal vision syndrome.