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People are staring at computer screens more and more. This can often cause dry eyes, but luckily, the problem is only short-term and can be avoided in the first place.
People blink at least half as much as normal when staring at the computer screen, because people usually squint and your eyes are not made for looking at monitors. It may be hard to remember to do this constantly, so every now and then you can close your eyes for a few seconds. You can also use the non-preserved artificial tears when you have dry eyes.
Windy, dusty, or smoky environments are also associated with dry eye symptoms. People also can experience dry eyes in air conditioned environments or on an airplane. Use artificial tears to alleviate these symptoms and keep your eyes moist and lubricated.
Eye Fatigue
The most common cause of eye ache is due to eye muscle fatigue, caused by looking at near objects for too long. For example, when doing most office work, such as typing, writing, or any kind of document work, we often experience eye fatigue. Some people may not be affected by aching pain but experience other kinds of symptoms, such as irritation or burning sensation, constant tearing, or throbbing pain in the eye socket. For some, the eyes may feel heavy even though the person is not sleepy. Some simply bury their faces in their work for so long that, when they finally look up, the world is all a blur and they immediately get the wrong notion that they are becoming nearsighted.
Using near vision, such as when reading or doing computer work, subjects the eyes to very hard work. All of the mentioned conditions are, in fact, the result of muscle fatigue due to overuse of the eyes. The best way to prevent an eye ache from overuse is to let your eyes rest by closing them, or by looking out into the distance. It is recommended to take a break every 20 minutes, and for 20 seconds either close your eyes or look off into the distance approximately 20 meters away.
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The Eyes and Refractive Errors 
