However, this constant engagement with computers, smartphones, and tablets has given rise to a growing eye health problem known as Computer Vision Syndrome (CVS), also called Digital Eye Strain.
In today’s digital era, screens are an inseparable part of daily life—whether for work, education, or leisure. However, this constant engagement with computers, smartphones, and tablets has given rise to a growing eye health problem known as Computer Vision Syndrome (CVS), also called Digital Eye Strain.
What Is Computer Vision Syndrome?
CVS refers to a group of eye and vision problems resulting from prolonged digital device use. The human eye is designed to look at distant objects and constantly change focus. When we stare at a screen for long hours, the focusing muscles of the eyes remain in continuous tension, leading to discomfort and fatigue.
Dr. Disha Sahoo
Ophthalmologist, IMS & SUM Hospital, Bhubaneswar
Symptoms of Computer Vision Syndrome
1. Eye strain or tired eyes – a feeling of heaviness or fatigue after screen use.
2. Dryness and irritation – due to reduced blinking while focusing on digital devices.
3. Burning or watering of eyes – from eye surface dryness or overexertion.
4. Blurred or double vision – difficulty maintaining clear focus, especially after prolonged screen time.
5. Headache – often around the forehead or temples, due to eye muscle fatigue.
6. Redness of eyes – caused by dryness and irritation.
7. Difficulty in refocusing – trouble shifting gaze from near to distant objects.
8. Increased sensitivity to light (photophobia) – discomfort in bright environments.
9. Neck, shoulder, or back pain – from poor posture during screen work.
10. General visual discomfort – feeling of heaviness or inability to concentrate visually for long periods.
Why Does It Happen?
Several factors contribute to CVS:
1.Reduced blinking: While using screens, the blink rate drops by almost half, causing dryness.
2.Improper posture and distance: Sitting too close or at the wrong angle strains both the eyes and neck.
3.Glare and lighting: Bright screens or reflections from overhead lights increase eye fatigue.
4.Uncorrected vision problems: Even minor refractive errors can worsen symptoms during digital work.
Who Is at Risk?
Almost everyone using screens for long periods is at risk, especially office workers, students, and professionals who rely heavily on computers.
The recent increase in online learning and remote work has made CVS common even among school-aged children.
How Can You Prevent It?
The good news is that Computer Vision Syndrome is preventable with small but consistent changes in screen habits:
1. Follow the 20-20-20 rule: Every 20 minutes, look at something 20 feet away for 20 seconds.
2. Blink often: Consciously remind yourself to blink to keep your eyes moist.
3. Maintain proper screen distance: Keep screens about an arm’s length away and slightly below eye level.
4. Adjust lighting: Match screen brightness with room light and avoid glare.
5. Use correct spectacles: Those with refractive errors should wear proper glasses, preferably with anti-reflective coating.
6. Take regular breaks: Stand, stretch, and rest your eyes for a few minutes every hour.
7. Stay hydrated and eat healthy: Nutrients like omega-3 fatty acids and vitamins A, C, and E support eye health.
When to Seek Help
If eye strain, headaches, or blurred vision persist despite these measures, it’s important to consult an ophthalmologist. A comprehensive eye examination can rule out uncorrected refractive errors or dry eye disease.
Thus concluding, Computer Vision Syndrome is the price we pay for living in a screen-centric world, but it’s one we can easily reduce with awareness and care. By taking regular breaks, maintaining ergonomic posture, and ensuring good eye hygiene, we can continue to enjoy technology—without letting it tire our eyes.
