Computer Vision Syndrome: Preventing Eye Strain and Discomfort

Myth vs. Fact

Myth: Computers cause permanent eye damage or blindness.
Fact: Screens cause temporary discomfort (digital eye strain) but no structural damage.

Common Symptoms

• Eye fatigue, burning, dryness
• Blurred or double vision
• Headaches (often frontal/temporal)
• Neck/shoulder pain (postural)

Prevention Strategies (20-20-20 Rule + Ergonomics)

1. 20-20-20: Every 20 minutes, look 20 feet away for 20 seconds.
2. Blink consciously: Screen use reduces blink rate by 60%; use artificial tears if needed.
3. Monitor position: Top of screen at/below eye level; 20–28 inches away.
4. Lighting: Reduce glare (anti-glare filter, window positioning); match screen brightness to surroundings.
5. Text size/contrast: Increase font, use dark text on light background.
6. Blue light: Evening exposure disrupts circadian rhythm; use night mode or blue-light glasses if sensitive.
7. Regular eye exams: Uncorrected refractive error exacerbates strain.

When to See an Eye Doctor

• Persistent symptoms despite ergonomic changes
• Vision changes not corrected by rest
• Eye pain, redness, discharge
• New floaters/flashes