Why port monitor vision
June 17, 2009 – 11:51 pm 
All displays – CRT and LCD – are harmful to the eyes. As it turned out, the adverse impact of monitors is not the electromagnetic radiation, and that people blink less when working at the computer.
The research of American scientists from the University of Ohio (Ohio State University) proved that Work for a computer monitor bad for the eyes.
But the problem is not the notorious electromagnetic radiation, especially the structure of human visual apparatus. When working with a PC user is often forced to blink, to better examine the details of the image on the screen or to reduce its brightness. This can lead to astenopii (visual fatigue) and the dryness of the eyes. Thus, the eye is not only harmful CRT displays, and LCD.
The more people schuritsya – so it is less likely to blink. With a maximum voltage of the frequency of blinking is reduced 4 times per minute. By itself, this trend is not dangerous, but the lack of moisturizing eye from a user a strong sense of discomfort, “sand in the eyes”.
The researchers studied the reactions of a group of volunteers who were to focus their attention on a small black point on the screen. The results obtained using electromyogram showed that the vast majority of users schuryatsya while working at the computer, even if they do not realize that. When I try to focus the mind, even if a person is a little schuritsya, you start to blink two times less frequently – about 7, not 15 times a minute.
According to scientists, the problem could be “smart” monitors, tuned to the brightness and contrast of images by a specific person.
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