HEALTH AT WORK

Digital Health

Digital Eye Strain: Protecting Your Vision in a Screen-Based World

Jan 2026 · 4 min read · Health at Work · AI-assisted draft

Digital eye strain — also called computer vision syndrome — affects a large proportion of people who work at screens for prolonged periods. Symptoms include tired, dry or irritated eyes, headaches, blurred vision, and neck and shoulder pain. As screen-based work has become the norm, this has grown into one of the most widespread modern occupational health issues.

Why screens strain the eyes

When we focus on screens, we blink less often — sometimes by more than half — which dries out the eyes. We also hold our focus at a fixed distance for hours, fatiguing the eye muscles. Glare and poor lighting compound the problem, and many people position screens at angles that force awkward, tension-inducing postures.

The 20-20-20 rule

The single most effective habit is the 20-20-20 rule: every 20 minutes, look at something 20 feet away for at least 20 seconds. This relaxes the focusing muscles and prompts natural blinking. It costs nothing and dramatically reduces strain over a working day.

Practical protection

Beyond the 20-20-20 rule, position your screen an arm's length away with the top at or just below eye level, reduce glare with proper lighting, keep the screen clean, and consider blue-light-filtering glasses to ease strain during long screen sessions. Ideal advice for office staff, IT professionals, students and anyone spending hours at a screen.