The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China.
Department of Ophthalmology, The First People's Hospital of Yunnan Province, Kunming, China.
Front Public Health. 2022 May 12;10:900539. doi: 10.3389/fpubh.2022.900539. eCollection 2022.
To investigate the use of video display terminal (VDT) in high-altitude regions by medical students and the resulted risk factors of eye discomfort.
A cross-sectional study was conducted in 686 medical students randomly selected from high-altitude regions, Kunming, Yunnan Province. The prevalence of video display terminal syndrome (VDTs) and related risk factors in medical students were analyzed by instructing students to fill in the eye discomfort symptom questionnaire [Ocular Surface Disease Index (OSDI) scale].
There were 686 participants in this study, including 213 males (31.0%) and 473 females (69.0%). The results of questionnaire survey showed that 184 patients (26.8%) didn't have eye discomfort symptoms and 502 patients (73.2%) had eye discomfort symptoms. The comparison of demographic and ocular characteristics of eye discomfort symptoms group and no eye discomfort symptoms group showed that medical students in the group with ocular discomfort symptoms had longer total duration of video terminal use, longer duration of each VDT use, higher total scores of ocular discomfort symptom scores, and a higher percentage of the ocular discomfort severity group, all with statistically significant differences. There was no significant difference in the remaining parameters between the two groups of participants. The results of multivariate logistic regression model analysis showed that the relationship between total sleep time, total duration of VDT use and eye discomfort symptom score was statistically significant ( < 0.05). Besides, ordinal logistic regression was applied further to investigate related factors of the severity of eye discomfort. The model demonstrated that total sleep duration and total VDT using duration were significantly associated with the severity of eye discomfort symptom ( < 0.05).The severity of eye discomfort symptom was significantly negatively related to the increased total sleep duration and it was significantly positively related to the increased VDT use duration.
The prevalence of VDTs is high in medical students at high-altitude regions. The longer total duration of daily use of VDT and shorter sleep duration are risk factors associated with VDTs. The severity of eye discomfort symptom was significantly negatively related to the increased total sleep duration and it was significantly positively related to the increased total VDT using duration.
调查高原地区医学生使用视频显示终端（VDT）的情况及眼部不适的相关危险因素。
采用横断面研究方法，对云南省昆明市高原地区的 686 名医学生进行问卷调查，填写眼部不适症状问卷[眼表面疾病指数（OSDI）量表]，分析医学生视频显示终端综合征（VDTs）的患病率及相关危险因素。
本研究共纳入 686 名参与者，其中男性 213 名（31.0%），女性 473 名（69.0%）。问卷调查结果显示，184 名（26.8%）患者无眼部不适症状，502 名（73.2%）患者有眼部不适症状。眼部不适症状组和无眼部不适症状组的人口统计学和眼部特征比较显示，眼部不适症状组医学生的视频终端总使用时间更长、每次使用时间更长、眼不适症状总评分更高、眼不适严重程度组的比例更高，差异均有统计学意义。两组参与者在其余参数方面无明显差异。多因素逻辑回归模型分析结果显示，总睡眠时间、视频终端总使用时间与眼不适症状评分的关系具有统计学意义（ < 0.05）。进一步进行有序逻辑回归分析眼不适严重程度的相关因素，结果表明总睡眠时间和视频终端总使用时间与眼不适症状严重程度显著相关（ < 0.05）。眼不适症状严重程度与总睡眠时间的增加呈显著负相关，与视频终端使用时间的增加呈显著正相关。
高原地区医学生 VDT 使用率较高，每日 VDT 使用总时间较长、睡眠时间较短是 VDT 相关的危险因素。眼不适症状严重程度与总睡眠时间的增加呈显著负相关，与视频终端使用时间的增加呈显著正相关。
