Investigation of Computer Vision Syndrome and Its Relationship with Lighting Conditions in Medical University Staff

Document Type : Original Article(s)

Authors

1 Assistant Professor, Department of Occupational Health and Safety Engineering, School of Health, Ilam University of Medical Sciences, Ilam, Iran

2 Undergraduate Student, Department of Occupational Health and Safety Engineering, Student Research Committee, Esfarayen Faculty of Medical Sciences, Esfarayen, Iran

3 Assistant Professor, Department of Occupational Health and Safety Engineering, Esfarayen Faculty of Medical Sciences, Esfarayen, Iran

Abstract

Background: The work environment can have a significant impact on Computer Vision Syndrome (CVS). This study investigates the relationship between CVS and the lighting conditions in the workplace among healthcare staff.
Methods: The study's sample consisted of 200 employees from the Faculty of Medical Sciences in Esfarayen. To assess workplace lighting conditions, the Hagner Screen Master device was used. The measured parameters included workspace illuminance and the luminance ratio of the display screen to its surrounding environment, with the obtained results compared to international standards. A Computer Vision Syndrome (CVS) questionnaire was used to collect symptoms related to visual problems. The data were analyzed using non-parametric tests (Mann-Whitney and Spearman correlation).
Findings: The mean age and work experience of the participants were 36.66 years and 10.75 years, respectively. The average score on the Computer Vision Syndrome (CVS) questionnaire was 7.69, with 62.2% of participants being affected by the syndrome. The most common symptoms were dry eyes (71.5%) and eye redness (68%). 54.5% of the workstations had standard illuminance levels at the desk surface. Additionally, 64.5% of the workstations had an inappropriate luminance ratio. A significant correlation was found between CVS and lighting conditions, duration of screen time, age, and work experience.
Conclusion: The results of the study indicated that administrative employees are at risk of Computer Vision Syndrome, and the severity of symptoms increases with longer working hours and inadequate lighting. Optimizing workplace lighting could help reduce these symptoms.

Highlights

Seyed Hojat Mousavi Kordmiri: Google Scholar

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Journal of Isfahan Medical School
Volume 43, Issue 826
2nd Week, October
September and October 2025
Pages 948-955

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History

  • Receive Date: 12 February 2025
  • Accept Date: 25 October 2025

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