How to keep your vision while working at the computer?

What causes this syndrome? When a person is working behind a computer monitor,he perceives a fairly large amount of information, his eyes are forced to adapt all the time to changing speed, different ways of reading, a person's attention is increased. The combination of all these factors and the technical features of most modern monitors make our eyes blink three times less frequently than usual. In addition, our eyes open wider than, for example, when reading text from paper. All this leads to an accelerated evaporation of the protective tear film of the eye, and, therefore, a person begins to experience dry eyes, burning, reduced visual acuity, accommodation, pain and fatigue when moving the eyes.

Completely eliminate the interaction with the computer is unlikely to work, and it is not necessary. The main thing is to follow certain rules when working with a computer. Then the sight will not suffer.

The first thing you should pay attention to is working hours at computer. In total, work on the computer should not exceed 6 hours a day. And for older people and children, the time for working with a computer should be reduced. It is not recommended to work at the computer for more than two hours continuously. Ideally, you need to do a ten-minute break every hour of work. And this break should be spent with advantage for sight. After all, if during such a break to play a computer game or read a book, then no rest will not get your eyes.

The next condition for maintaining a healthy vision when working at a computer is Correct setting of parameters monitor. To avoid unnecessary strain on the eyes, adjust brightness, contrast and refresh rate monitor. Brightness and contrast should not be maximal. Determine the appropriate level of brightness is not difficult. It is enough to open some white image (for example, a blank document of a text editor) and evaluate it. If the white color of the image is blinding, then the brightness of the monitor should be reduced. If the image appears grayish, then the brightness should be increased. The refresh rate of the monitor is the frequency with which the image on the monitor is updated. The higher this frequency, the more imperceptible for the human eye is the image change. The recommended refresh rate of modern LCD monitors is at least 75 Hz.

To computerized a workplace a number of requirements are also presented. The room in which the workplace is located should be ventilated daily and subjected to wet cleaning. The monitor should be installed so that its center is slightly below eye level. With respect to additional light sources, the monitor should be positioned at an angle of 90 ° C. Avoid direct sunlight or other direct light sources on the monitor, as these sources give glare on the monitor. Be sure to monitor the cleanliness of the monitor: it should not have spots and dust. Clean the monitor with special wipes designed for this purpose.

When using a computer correct posture is very important. The height of the chair or other seatingcorrespond to growth, it is desirable that this height can be easily adjusted sitting. The feet should stand firmly on the floor or a special stand, the angle of the legs in the knees should be approximately 90 ° C, and the recommended angle between the seat and the back of the chair is just over 90 ° C. Sitting should be straight or, slightly bending forward. The wrists should be at the level of the forearms, shoulders should be relaxed and freely lowered. The distance from the eyes to the monitor of the computer should be at least 55-60 cm, the larger the diagonal of the monitor - the more this distance should be.

Least tiring for the eyes is a dark text on a light background (ideally - black letters on a white background). If the text font is too small, do not bend closer to the screen to read it, but just zoom in on the document. If you need to type text from paper, it is recommended to place the source as close as possible to the monitor. This will avoid frequent movements of the head and eyes.

If there is a feeling of fatigue, tension, drowsiness, heaviness in the eyes, then need to take a short break in the work. During the break, you can perform, for example, the following set of exercises for the eyes (all exercises are performed sitting):

1. Lean back in the chair, take a deep breath and, leaning forward, exhale. Repeat 5-6 times.


2. Cover your eyelids, close your eyes tightly for a few seconds, then open your eyelids. Repeat 5-6 times.


3. Put your hands on your belt, turn your head to the right and look at the elbow of your right hand. Then turn your head to the left and look at the elbow of your left hand. Return to the starting position. Repeat 5-6 times.


4. Raise your eyes upwards, make them circular movements clockwise, then counterclockwise. Repeat 5-6 times.


5. Look straight ahead for 2-3 seconds, then look at the tip of the nose for 3-5 seconds. Repeat 6-8 times.


6. Close eyelids and massage them with the tips of your index fingers for 30 seconds.

Also help to relax your eyes during the break special computer screensavers or simulators. And you can buy special glasses for working on the computer, which will help reduce the strain on the eyes. Remember - you can not buy health for any money, so take care of your eyes and observe the rules of the computer!