How to prevent Computer Vision Syndrome (CVS)?

Posted on November 28, 2017

Regular eye examinations and proper viewing habits can help to prevent or reduce the development of the symptoms associated with Computer Vision Syndrome. Here are some pointers for preventing or reducing the symptoms of CVS, and are related with the computer use. These include:

Location of Computer Screen – Optimally, the computer screen should be 15 to 20 degrees below eye level (about 4 or 5 inches) as measured from the centre of the screen and 20 to 28 inches from the eyes.

Reference Materials – These materials should be located above the keyboard and below the monitor, or a document holder can be used beside the monitor so you do not need to move your head to look from the document to the screen.

Light – Position the computer screen to avoid glare, particularly from overhead lighting or windows.

Seat – Chairs should be comfortably padded and conform to the body. Chair height should be adjusted so your feet rest flat on the floor. If your chair has arms, they should be adjusted to provide arm support while you are typing. Your wrists shouldn’t rest on the keyboard when typing.

Breaks – Rest your eyes for 15 minutes after two hours of continuous computer use. Also, for every 20 minutes of computer viewing, look into the distance for 20 seconds to allow your eye muscles to relax and refocus.

Blink – To minimize your chances of developing dry eye when using a computer, remember to blink frequently. The Think and Blink Principle will keep your eyes comfortable.

Convergence Exercises – Hold a pen at arm’s length and look at its tip, slowly bringing it closer, till you feel the tip blur or appear double. Withdraw the pen till the tip once again appears sharp and single and hold the tip for about 10 seconds. Take it back to an arm’s length and hold it there for 10 seconds.

Repeat this for 5 minutes each in the morning and evening, gradually increasing to 15 minutes over 2 weeks. Do it regularly for 2 months, after which 5 minutes a day is sufficient.


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