Logistic regression analysis differentiates high from low computer users by facial skin conditions in a population of Chinese women

Abstract

In the past few decades, video display terminals (VDTs) and computer use have been associated with various skin symptoms in several published reports. In addition, internet beauty sites report that extended computer use leads to acne or accelerated facial aging. For example, the term "computer face" is used to describe premature aging caused by sitting for long periods of time in front of the screen (http://www.marieclaire.com/beauty/news/a12937/computer-screen-skin-problems/). We wished to determine, using instrumental and expert assessment, if prolonged/extended computer use could be associated with certain skin conditions. This study focused on longterm (10 years or more) office VDT work and was designed to include a wide range of confounding variables. One hundred Chinese women were recruited, 50 in each of two groups characterized as either (a) computer users with 8 or more hours per day, or (b) non-users who use computers 1 h or less per day. All subjects lived in Guangzhou and worked in the same building. Confounders were assessed by survey, and included age, smoking, sun exposure history, exercise, and other factors. Skin conditions, which included acne, sebum, wrinkles, and pigment spots, were assessed by instrumental measurements and blinded dermatologist assessment. Age and skin conditions were subjected to logistic regression analysis to determine major contributors which could separate, or distinguish, the computer group from the non-computer group. From this analysis, the office computer users were found to be statistically significantly associated with a higher incidence of acne, higher sebum levels, and a higher risk of self-reported sensitive skin when compared with the non-computer group. The final model suggests that the major contributors in separating the two groups are acne and pigmented spots (UV and brown). These results indicate that facial skin of women within the Chinese population who use computers for 8 h or more a day may be at higher risk for acne; however, they had lower levels of attributes associated with photoaging, such as lentigines and facial wrinkles. Separate pairwise assessment of other variables such as lifetime cumulative sun exposure, sleep quality, smoking behavior, exercise, and cosmetic product use or procedures showed no significant differences between the two groups. This indicates that the results obtained from objective and subjective measurements were not biased due to these potential confounders, but does not reveal the mechanism for the observed differences in skin conditions between computer/VDT users and non-users. Open Access© The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Changes in the visual display terminal syndrome of college students in online classes during the COVID-19 pandemic

“…지금까지 VDT증후군에 관한 명확한 병인은 밝혀지지 않았으 나 [5] VDT를 장시간 사용하는 경우, 불완전한 눈 깜박임, 콘텍트 렌즈를 착용한 경우, 머리를 숙이거나 누워있는 자세로 사용하는 경우, 블루라이트차단기를 사용하지 않는 경우, 부적절한 조명과 낮은 습도 등 [2,3,6,7]과 같은 다양한 요인들이 증상을 유발하거나 악화시키는 것으로 보고되고 있다. VDT 사용시간은 많은 선행연 구에서 일관된 결과를 보여주고 있는데 1~2시간 정도의 연속적인 사용만으로도 VDT증후군 자각증상이 유의하게 증가하는 것으로 나타났다 [5,6,8,9]. 특히 집중도가 높은 작업을 위해 장시간 VDT 를 이용하는 경우 눈의 피로나 안구건조 증상이 더욱더 빠르게 나타나고 나빠지므로 [10] 사용시간의 제한과 휴식의 중요성을 강 조하였다 [11,12].…”