How many hours have you been on the computer today? Computer vision syndrome (CVS) is a condition where symptoms of eye and vision problems related to near work are experienced during or related to computer use. Symptoms of CVS include blurred vision, eyestrain, headaches, dry or irritated eyes, neck and/or backaches, light sensitivity or double vision. These are a result of the intense near point of activity required by using a computer. There is no minimum limit as to how much time one sits in front of a computer to have this problem. Interestingly, computer users would take a break when their necks are tired, but unknowingly continue working on a computer because visual problems are subtle, slower to develop and less painful.
Here are a few tips to alleviate your computer vision stress.
First, evaluate ergonomics, the relationship of the work environment. We recommend a 24 to 30 inch working range and a viewing angle of 15 degree down. Keeping the head posture balanced would help with neck strain.
Second, evaluate the lighting situation. Eliminate harsh exterior light and lower interior lighting which increases the strain on the eyes. If you wear glasses, anti-reflection lenses minimize glare on the front and back surfaces of our eyeglass lenses.
Third, take many breaks by looking away at a distant object, above or around the monitor if possible. This gives the eyes a few seconds to relax and increases blink rate. We average about 22 blinks per minute, but the number falls to less than 10 when on the computer. Since we blink less when on the computer, there is a greater likelihood to have dry eye symptoms. So have some non-preserved artificial tears next to the computer and use it.
Lastly, a trip to your local eye care professional can determine your personalized regimen of visual and ergonomic recommendations to alleviate CVS. All purpose, “street wear” types of lens correction often do not work properly for the computer user.
Remember, if you spend more time on a computer than the amount of time you sleep, a trip to your local eye doctor could cost you less than a “Dux Bed.”
For further information, please call Dr. Paul Lin of Castaic Optometry at 661-294-2733.