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The predictions made twenty years ago have become reality… Most people have computers at home and nearly every workplace is computerized. As computer usage increases, many people are becoming aware of the visual symptoms associated with this uniquely demanding task. After an hour or so of computer use, you may notice that your eyes feel irritated and fatigued. Your vision may seem blurred and you may even develop a headache. These are only a few of the symptoms associated with Computer Vision Syndrome.
Computer Vision Syndrome (CVS) is a name given to a variety of visual problems related to computer use. The computer screen is different in several ways from
most other reading materials. First, it is generally not viewed at the same distance as a magazine, newspaper or book would be read. Therefore, conventional reading glasses or bifocals are usually not properly focused on the screen. To adjust for this, one must move closer to the screen and tilt the head upward (with standard bifocals).
This position does not remain comfortable for long! Fortunately, there is a way to prescribe appropriate glasses for this problem. Using special computer focus testing at the exact distance that you view your computer screen, a comfortable computer prescription can be obtained. New lens technology also allows you to adjust your focus distance without moving closer to or farther from the screen.
The second contributing factor to CVS is the fact that the text on the screen is backlit and at a slightly different distance from your eyes than the screen surface
. This difference, while minute, can cause the eyes to shift focus many times within a minute – leading to additional fatigue of the focusing system. Even without this focus shift problem, the mere fact that you are spending hours fixated at a near image can lead to intraocular muscle stress and spasm. This problem can be minimized with a computer eyeglass prescription that decreases the demand on your focusing system.
At Derickson Vision Consultants, we are able to perform specialized Computer Examinations and prescribe high performance lenses like the Tact from Hoya or Proclear Biocompatiable Contact Lenses.
A third problem results from glare and reflections on the screen and even on eyeglasses from peripheral light sources. This glare can make it difficult to distinguish characters on the screen and can fatigue your eyes quickly. To alleviate this problem, you should make sure that peripheral lighting is directed away from the screen and your eyes. It may also be wise to invest in an ant-glare screen cover or an LCD monitor. However, one of the best ways to improve your comfort is to have your computer glasses coated with an anti-reflective coating. This is the coating used in camera lenses, telescopes, and other high-tech optical devices. In a high-tech world, you need high-tech prescription eyewear!
Finally, some of your discomfort can result from dryness secondary to extended computer use. Studies have shown that the rate of blinking (which is the eye’s method of coating itself with tears) decreases four-fold during computer work. This problem can be minimized with the use of artificial tears or other dry-eye therapies prescribed by your doctor.
At Derickson Eye Consultants we are able to perform specialized Computer Examinations and prescribe high performance lenses like the Tact from Hoya or Proclear Biocompatiable Contact Lenses. This and other Computer Vision Solutions are available upon request. Please measure the distance from the screen to the bridge of your nose in your typical work station environment.
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