Computers have literally flipped the way in which we do business upside down.
Instead of relying on typewriters, telephones and face-to-face business meetings, we can use computers and the internet for all our business needs.
Although computers have changed the way in which we do business, they have also caused many workers to suffer from computer eye strain.
Computer eye strain normally strikes in the office environment where people are constantly staring at computer monitors day in and day out.
However, students who are constantly online researching and writing term papers and anyone who enjoys playing video games or surfing the net can also suffer.
The symptoms include tired and sore eyes, as well as watery eyes, blurred vision, dry eyes, itching and burning in the eyes, headaches and/or a sore neck.
Other problems include trouble focusing, sensitivity to light and double vision.
You could have one of these symptoms or you could have all of them.
Knowing the symptoms is only half the battle against eye strain.
Before you can begin to fight back, you need to know the causes.
The Top Five Causes of Eye Strain There are several different causes of computer eye strain which can be organized as follows:

1. The constant staring and focusing- this is the number one cause for eye strain.
   When you work something for a long period of time, whether it is a muscle in your leg or a muscle in your eye, it is eventually going to get tired and start to hurt.
   This is true when you lift weights, when you go for a long run, or when you do 1000 sit ups.
   It only makes sense that this constant staring at a computer screen would cause your eyes to strain like any other part of your body.
   
2. Poor lighting- if your office has poor lighting, either too bright or too dim, then you could have troubles with eye strain.
   Consider what the bright light of the sun does to your eyes- most of the time you have to shield away from it.
   This is the same concept with the lighting in your office but not so extreme.
   
3. Brightness of the screen- another cause of eye strain is due to the brightness of your monitor.
   Computer screens are bright for a reason; however, if you suffer from headaches and sore eyes, it may be because the screen is too bright.
   Take it down a level or two in your control panel.
   
4. Uncomfortable office set up- another reason for eye strain is simply because your computer monitor is not properly set up.
   Tweak your keyboard and your chair position to find a an ergonomically friendly set up.
   
5. Depth perception of the monitor- if a computer is too close your eyes can start to hurt.
   Most computers are 60 inches or closer to your eyes.
   Try to change the screens position a couple of times a day to give your eyes more variety.