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20/20/20 Trick to Prevent Eye Damage Due to Computers


Jakarta, sore eyes is the most common complaints when working too long at the computer. These complaints if left unchecked could develop into the damage that causes blurred vision. To avoid this, apply the 20/20/20 rule.

"The human eye is designed to view 3-dimensional objects. On the screens, the eyes are forced to look at the 2-dimensional objects," said Andrea Thau, OD optometrists of the American Optometric Association, as quoted by MSNBC, Monday (03/21/2011).

Coercion by Thau cause the brain to work harder to interpret the images captured by the eye. Brain that fatigue would cause the light from the eyes of signal processing is disturbed, then perceived as a blurred eye complaints.

In addition, the normal human eye can only see with a comfortable if the focus is at a minimum distance of 20 feet (about 6 meters). While at the computer, eyes again forced to focus its views at a distance of less than 2 times (about 60 cm).

Coercion-coercion has sparked some complaints are referred to as computer vision syndrome (CVS). Symptoms include dry eyes, headaches and if left unchecked will continue to lead the view was blurred or unfocused.

According to Thau, overcoming the syndrome should not be done by removing the computer from everyday life because after all humans need technology to support productivity. What needs to be changed only how to use it.

For people whose jobs require to sit for hours in front of the computer, it is recommended to apply the 20/20/20 rule. This means that every 20 minutes, a time to turn the view from the screen for 20 seconds to another point, a distance of 20 feet (about 6 meters).

Also, do not forget to blink because the average person just blinks 6 times / min while being engrossed in front of the computer. In order not to dry eye balls and feels pain, eyelid should always blink of approximately 16 times / minute.

If possible, position the appropriate monitor to no higher than eye, at least parallel. If too high then the eyelids tend to work harder to blink and moisten the eyeball, so that the edges so remember to blink.

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