The relationship between visual display terminal usage at work and symptoms related to computer vision syndrome

Soonsu Shin; Eun Hye Yang; Hyo Choon Lee; Seong Ho Moon; Jae-Hong Ryoo

doi:10.35371/aoem.2023.35.e1

The relationship between visual display terminal usage at work and symptoms related to computer vision syndrome

Ann Occup Environ Med. 2023 Jan 9:35:e1. doi: 10.35371/aoem.2023.35.e1. eCollection 2023.

Authors

Soonsu Shin¹, Eun Hye Yang¹, Hyo Choon Lee¹, Seong Ho Moon¹, Jae-Hong Ryoo²

Affiliations

¹ Department of Occupational and Environmental Medicine, Kyung Hee University Hospital, Seoul, Korea.
² Department of Occupational and Environmental Medicine, School of Medicine, Kyung Hee University, Seoul, Korea.

Abstract

Background: Although it is well known that the usage of visual display terminal (VDT) at the workplace causes computer vision syndrome (CVS), previous studies mainly focused on computer use and the health of white-collar workers. In this study, we explored the relationship between the usage of VDT including various devices, and symptoms related to CVS in a large population including pink-collar workers and blue-collar workers.

Methods: 21,304 wage workers over the age of 20 years were analyzed from the 6th Korean Working Conditions Survey. To investigate the association between VDT use at work and symptoms related to CVS among wage workers, odds ratios (ORs) and 95% confidence interval (CI) were calculated by multivariate logistic regression models.

Results: In the group with the highest VDT usage at work, the OR of headache/eyestrain was 2.16 (95% CI: 1.86-2.52). The OR of suspected CVS patients was significantly increased in the highest group of usage of VDT at work (OR: 1.69; 95% CI, 1.39-2.06). Compare with the reference group, the OR for headache/eyestrain in the highest group of VDT usage was 2.81 (95% CI: 2.13-3.70) in white-collar workers, 1.78 (95% CI: 1.32-2.40) in pink-collar workers, and 1.59 (95% CI: 1.18-2.15) in blue-collar workers.

Conclusions: We observed a relationship in which the use of VDT in the workplace increases the risk of headache/eyestrain regardless of occupational classification. Our findings emphasize the importance of paying attention to the health of VDT workers and making plans to improve their working conditions.

Keywords: Asthenopia; Computer vision syndrome; Cross-sectional studies; Headache.