What Is Computer Vision Syndrome?

According to reports, about 143 million Americans work on a computer every day. 88% of that number suffers from computer eye strain.

54 million children work on a computer each day too, at home and in school. Prolonged computer use stresses a child’s eyes and can have a bad impact on a child’s vision development.

Symptoms of Computer Vision Syndrome

If you or your child spend two or more hours in front of a computer each day, there is likelihood that you’ll experience some degree of computer vision syndrome. Some of its symptoms include headaches, loss of focus, burning eyes, tired eyes, double vision, blurred vision, neck and shoulder pains.

Causes of Computer Vision Syndrome

Computer Vision Syndrome is mainly caused by the eyes and the brain reacting differently to characters on the computer screen than they do on a printed characters. Comparing our eyes’ ability to focus on printed materials and characters on a screen, our eyes have very little problem focusing on characters on print. This is because characters on print are dense and black with well-defined edges. Health eyes can focus on a printed page without a problem.

On the other hand, characters on a computer screen don’t have this kind of contrast. In other words, they do not have well-defined edges. These characters (pixels) are brightest at the middle then lose intensity towards the edges. It is quite difficult for the eyes to maintain focus and remain fixed onto these images.

Instead of focusing, our eyes drift out to a point called RPA or Resting Point of Accommodation. The eyes involuntarily move to the RPA then strain to focus on the screen. This continuous flexing of the eyes’ focusing muscles creates fatigues and causes the burning, tiring feeling that is common after long hours at the computer.

Treatment and Prevention

To treat or prevent Computer Vision Syndrome, simply go to an eye care professional that specializes in computer vision care.

Usually, standard reading glasses or over-the-counter glasses are not accurate enough, because viewing a computer is usually at a different distance, 18"-28" compared to reading distance which is 16"-21".

You have to get an eye doctor to accurately diagnose your computer vision problem and determine your correct computer working distance. After this, your doctor can simply prescribe the right computer eyeglasses that will allow you to work comfortably and productively at that distance.

Also read through studies on computer eye wear and how they can increase computer worker productivity significantly, with cost savings for employers for employers who provide the eye wear.

Glare Screen Filters and Tints for Computer Lenses

Glare screen filters may help a little, but do not solve your computer vision problem. Glare screen filters only affect the glare from your monitor. It does not solve the visual problems related to the constant refocusing which your eyes do when your work at a computer.

If you work in a brightly lit office, you may benefit from a light tint applied to your computer lenses. An anti-reflective coating is also highly recommended on all computer eyeglasses. An AR coating prevents glare and reflections on the front and the back of the lenses that would interfere with focusing on the screen.

Computer Glasses

More than 70% of computer users need computer eyeglasses. Computer eyeglasses make the screen clearer. they work by eliminating the constant refocusing effort that your eyes go through when viewing the screen. It has also been proven clinically that having the correct prescription in computer eyeglasses increases productivity and accuracy.    (source:http://www.allaboutvision.com/cvs/faqs.htm)