After a couple of hours of continual computer use you may begin to find it hard to focus, and feel the need to squint in-order to see well. At the same time you may develop a headache, or this could occur a while after you’ve stopped using the computer. If this sounds like you it’s possible that you’re suffering from computer vision syndrome.
Computer vision syndrome affects individuals who use a computer a great deal. Often doing so can be unavoidable, as this is necessary for work. At the same time people who are over the age of forty may be more susceptible, as after this age focusing becomes more difficult as eye sight begins to deteriorate.
It’s easier for your eyes to focus and comfortably read words printed on paper than those on a computer screen. This is because words visually displayed on a computer are made up of pixels, which are tiny dots. Eye strain can be caused by attempting to focus on them after a while.
At the same time every person has something known as a Resting Point of Accommodation, or RPA. This is the distance at which your eyes rest their vision. When you view a computer your RPA will probably be further away than the screen. You can still focus on the screen, but only for a limited amount of time before your vision travels further away to help your eyes relax. The result is that you can’t sustain your focus.
The typical symptoms of computer vision syndrome are blurred vision, seeing double and words may sometimes look as though they run into each other too. Other symptoms include a sensation of burning in the eyes and eyes which are dry and sore. The latter symptoms are likely to occur because you don’t blink as often when viewing a computer screen as you do at other times. This means that you aren’t coating your eyes with natural tears often enough.
You may also find it hard to focus when you look away from your computer. The result is that the room you are in looks blurry and has no definite edges for a few moments. Later on, if you drive you may find it hard to focus on the road too.
Some people report seeing a halo around letters on their computer screen and most find that they have to look away from the screen regularly before they can focus properly after having bouts of fuzzy viewing.
Symptoms can also include aches and pains, generally in the region of the neck and shoulders. You may find this accompanies difficulty in reading words on a computer screen because of the way you sit or hold yourself while in-front of the computer.
The symptoms of this condition are uncomfortable and unpleasant. However you may be able to improve computer viewing by wearing computer glasses, using moisturizing eye drops, reducing screen glare and learning how to sit correctly when using your computer.