What is Computer Vision Syndrome (CVS)?
Computer Vision Syndrome describes a collection of eye and vision problems linked to extended screen time. As computers and smart devices have become part of everyday life, CVS has become increasingly common. Many regular computer users experience symptoms to some degree. Children can be affected too as school and home screen time increases.
CVS is similar to other repetitive-motion conditions. Reading on screens adds extra challenges such as flicker, contrast, glare and bright light — all of which can increase eye strain. If you need vision correction and aren’t wearing it, or if your prescription is outdated, the strain can be worse. Around the 40s, age-related focusing changes (presbyopia) can also make near work more demanding.
Common CVS symptoms
- Blurred or double vision
- Dry, red, or irritated eyes
- Headaches
- Neck and back pain
- Overall eye fatigue during or after screen use
- Reduce glare: Re-position the monitor, dim overhead lights, adjust blinds, or consider an anti-glare screen filter.
- Optimize monitor setup: Place the screen slightly below eye level and about 20–28 inches away. Use a copy stand to keep printed pages level with the screen.
- Tune your display: Adjust brightness, contrast, and text size so content is comfortable to read.
- Follow 20-20-20: Every 20 minutes, look at something 20 feet away for ~20 seconds; take short off-screen breaks as needed.
- Update your eyewear: Make sure your prescription is current; ask about anti-glare coatings or options that ease near-work strain.
If screen-related symptoms persist or affect daily tasks, a comprehensive eye exam can rule out underlying issues and tailor solutions — including task-specific lenses, dry eye care, or ergonomic guidance.