Skip to content
My WebMD Sign In, Sign Up

Eye Health Center

Font Size
A
A
A

Computer Vision Syndrome

Staring at a computer monitor for hours on end has become a part of the modern workday. And inevitably, all of that staring can put a real strain on your eyes.

The name for eye problems caused by computer use is computer vision syndrome (CVS). CVS is not one specific eye problem. Instead, the term encompasses a whole range of eyestrain and pain experienced by computer users.

Recommended Related to Eye Health

Natural Vision Correction: Does It Work?

Exercising your body makes it stronger. So can exercising your eyes make your vision stronger, too?  Unfortunately, there is no evidence that eye exercises improve vision. Your need for glasses is based on the shape of your eye, the size of your pupil, and the ability to shift focus, which declines as we age. Still, like many alternative remedies, natural vision correction has supporters among some practitioners of holistic medicine and their patients. If you are looking into natural vision correction,...

Read the Natural Vision Correction: Does It Work? article > >

Research shows computer eye problems are common. Somewhere between 50% and 90% of people who work at a computer screen have at least some symptoms of eye trouble.

In addition, working adults aren't the only ones vulnerable to computer vision syndrome. Kids who stare at portable video games or who use computers throughout the day at school also can experience eye problems related to computer use, especially if the lighting and computer position are less than ideal.

How Can the Computer Screen Affect Vision?

Computer vision syndrome is similar to carpal tunnel syndrome and other repetitive stress injuries at work. It occurs when you're carrying out the same motion over and over again. Just like those other repetitive stress injuries, computer vision syndrome can get worse the longer you continue the activity.

Working at a computer requires that the eyes continuously focus, move back and forth, and align with what you are seeing. You may have to look down at papers and then back up to type, and the eyes have to accommodate to changing images on the screen in order to create a clear picture for the brain to interpret.

All of these functions require a lot of effort from eye muscles. Working on a computer is more challenging to your eyes than reading a book or piece of paper, because a computer screen also adds the elements of screen contrast, flicker, and glare. Computer eye problems are more likely to occur if you already have an eye problem -- such as nearsightedness or astigmatism -- or if you need glasses but don't wear them or wear the wrong prescription for computer use.

Working at a computer gets even more difficult as you get older. That's because the lens of your eye becomes less flexible. The ability to focus on near and far objects starts to diminish after about age 40 -- a condition called presbyopia.

What Symptoms Are Part of Computer Vision Syndrome?

There's no evidence that computer vision syndrome causes any long-term damage to the eyes -- for example, cataracts. However, regular computer use can be the source of significant eyestrain and discomfort.

If you have computer vision syndrome, you may experience some or all of these symptoms:

  • Blurred vision
  • Double vision
  • Dry, red eyes
  • Eye irritation
  • Headaches
  • Neck or back pain

If these symptoms are not treated, they can have a real effect on your work performance.

WebMD Medical Reference

Today on WebMD

businesswoman wearing fun eyeglasses
Slideshow
Pink Eye Slideshow
Slideshow
 
Woman with itchy watery eyes
Slideshow
grilled salmon and spinach
Video
 

Understanding Stye
Article
human eye
Article
 
eye
Video
eye exam timing
Video
 

vision test
Tool
is vision correction surgery for you
Article
 
high tech contacts
Article
eye drop
Article