Prevalence of Computer Vision Syndrome among Allied Health Professionals: A Cross-Sectional Study

Abstract

Background: Computer Vision Syndrome (CVS) is an increasingly prevalent occupational health condition resulting from prolonged digital screen use and is characterized by visual and musculoskeletal symptoms that can impair work efficiency and well-being. Allied health professionals are particularly vulnerable due to sustained screen-based clinical and administrative tasks, yet local evidence from low- and middle-income settings remains limited. Objective: To determine the prevalence of Computer Vision Syndrome among allied health professionals in Lahore and to examine its association with daily screen exposure. Methods: A cross-sectional observational study was conducted among 145 allied health professionals working in selected healthcare institutions in Lahore. Data were collected using a structured self-administered questionnaire capturing demographic characteristics, average daily screen time, and CVS-related symptoms. CVS was defined as the presence of one or more visual or musculoskeletal symptoms associated with screen use. Descriptive statistics were used to estimate prevalence, and chi-square tests and multivariable logistic regression were applied to assess associations between screen exposure and CVS. Results: The overall prevalence of CVS was 68.3%. Eye strain (61.4%) and headache (55.2%) were the most frequently reported symptoms. Participants with screen exposure exceeding six hours per day had significantly higher odds of CVS compared with those using screens for two to four hours (adjusted OR 6.92; 95% CI 2.41–19.8), demonstrating a clear dose–response relationship. Age and gender were not independently associated with CVS. Conclusion: Computer Vision Syndrome is highly prevalent among allied health professionals in Lahore, with prolonged screen exposure emerging as the strongest risk factor. Implementation of ergonomic interventions, promotion of regular visual breaks, and increased occupational health awareness are essential to reduce the burden of CVS in healthcare settings.