Wednesday, September 13, 2006

Computer Vision Syndrome

Computer Vision Syndrome

As the use of computers become more common each and every day, with some people spending literally hours staring at the computer monitor, it is easy to see how we can begin to have trouble with our eyes. Computer Vision Syndrome, also known as CVS, is estimated to affect around fifty-four million adults and children within the United States.

What happens is this, as we spend more hours looking at the computer screen (typically two or more hours) the eyes begin to suffer. The brain and eyes react in a much different manner when looking at characters upon a computer screen, than when looking at printed items on a piece of paper. The characters on a piece of paper have specific character, edges, and contrast. Those upon a computer screen, do not. They have bright centers and towards the edges, the intensity diminishes. This creates a problem within our eyes because the eyes are not able to focus on the characters.

As we attempt to focus on what we are seeing, our eyes tend to move involuntarily to an RPA or a resting point of accommodation, creating the need for eyes to try to refocus again. All of this work on the part of our eyes creates burning and fatigue of the eyes the longer we look at the computer screen.

There are symptoms that come along with Computer Vision Syndrome, usually after spending around two hours or more on the computer, more specifically the screen, you will undoubtedly begin to experience at least some of these symptoms such as pain in the shoulder or neck, blurry or double vision, tired or burning eyes, inability to keep focus, or even headaches. Within a child, if they use the computer for prolonged periods of time, their eyes will become stressed and ultimately have a great impact on the development of their vision.

People with CVS or Computer Vision Syndrome, often have a hard time with maintain productivity at work or school. When you suffer from CVS you often have the inability to remain focused and may suffer from some of the symptoms which could lead to loss of comfort, accuracy may suffer, and productivity loss all at the same time.

Overall, Computer Vision Syndrome is not a pleasant thing and should not be taken lightly. In further articles, within the CVS series, we will discuss what you can do to eliminate the problems and provide you with solutions to avoid computer vision syndrome.

As always, Hope this has been helpful!
Feel free to post any comments or questions

More on CVS soon!

Ben…aka MobileEyeGuy


  1. Very interesting post. I look forward to the follow-up, since I spend much of my day in front of the computer screen!

  2. Very interesting! Gotta look away from the computer more. Teacher tells us to focus on something in the distant every hour to refocus our eyes.
    Alternatively, I can do what I'm doing now and type while looking at my foot. :D Hopefully; no typos.

  3. Do you have any posts on impact-resistant goggles? I recently bought some for my physics class, and I'm not familiar with the rating systems so I'm not clear how much impact they can withstand. We're shooting 25g balls at 4m/s, and the goggles I got I think were rated Z87+.

  4. I suspect this is behind so many children, younger each year, are wearing glasses.

  5. Anonymous10:06 AM

    Weird, I've been working behind computers for well over 20 years, many marathon 14 hour session (probably longer) and never experienced any of these symptoms.

    My lens prescription has been pretty stable for all of those years, past size years the doc said my astigmatism axis shifted a tiny bit.

    I think there's more to this, I look forward to the followup.

    p.s.: sorry to hear about your Dad in Law, hope things go well.