Nowadays personal computers have turned into an essential attribute of modern life, the devices, once used only for work, now more and more used for communication and entertainment. Many people spend at the computer most of their day doing a variety of things: work, social networking, watching new movies, playing computer games and so on. I think you will have a great revelation that such a pastime is strongly reflected in one of the most valuable of human senses – vision. This is a tremendous burden on the eyes, which is exposed to the majority of modern people, especially those whose work is related to the use of the computer leads to discomfort, eye pain, increased ocular pressure and reduced visual acuity. But what exactly is expressed by the harmful effects of computer on eyes? And how to reduce the load on the vision, in order to avoid unpleasant visits to the optometrist? Let's find out.

Why the computer hurts my eyes

The image on the computer monitor differ from the usual to our eyes, and natural environments. The presence of a source of light, an unnatural brightness, strong contrast – all of these factors put more stress on the eyes. In addition, the human eye is by nature adapted for far too long to focus on a close subject. Another negative factor when working at the computer is that we focus his gaze in one direction and forget to blink, which may lead to dryness and inflammation of the eye membranes.

Remember! If you have had surgery to remove cataracts (see cataract.ua (http://xn--80aaaa0cd4boe.xn--j1amh/)) or any other surgery associated with eyes, they need some time to rest. So for a couple of days totally abstain from reading, computer and TV.

Useful tips to reduce eye strain

In order to reduce eye fatigue, try to apply the following tips:

• Take care of proper lighting in the room where your computer is. The ideal lighting for working on the computer – diffused indirect light that does not glare on the monitor. It is desirable to avoid sharp changes in brightness in the field of view, so if the window the sun shines brightly, to cover his translucent curtains, better blinds.
• Artificial lighting when working at the computer should be soft and uniform. Avoid working in the dark or alone in the light of table lamps.
• Keep the monitor screen. Once a week clean the screen with special wipes.

• If possible, adjust your chair and monitor so that the top level of the monitor was located a little below eye level. Also it is desirable that the monitor is slightly angled so that its lower part was slightly closer to the user.
• Keep a safe distance between eyes and screen. The screen should be approximately 50-60 centimetres from your eyes. If you have difficulty seeing the text and have to "poke nose" into the monitor, make the font bigger – this function is present in text editors and Internet browsers. (Ctrl+mouse wheel).
• Include in your daily diet foods that can have a positive effect on the blood vessels of the retina: black currant, blueberry, green tea, parsley, green onions. If you suffer from nearsightedness, eat young carrots combined with a tablespoon of sour cream or vegetable oil.
• When working at the computer tired or even sore eyes, you can go to the bathroom and slightly damp from the cool water. Cooling helps relax the muscles of the eyeball and the pain should soon subside.
• Don't forget to blink when staring at the monitor.

Also a huge help for tired eyes would be a small set of exercises. Eye exercises will help to relax your eye muscles, and stimulate the normal eye blood circulation and train the accommodation of the eye lens, thus preventing the development of myopia.

Eye exercises

To perform exercises for the eyes, not necessarily have a lot of free time. Select on these exercises ten minutes a day and you will soon feel that your eyes will become much easier to cope with the load. Ideally, a set of exercises to do twice a day, but even if you get to perform the exercises once a day, it has a positive effect on your vision.

1. Close your eyes and try to relax. If not, try to imagine something pleasant or think of any good moments from your life.
2. Blink quickly within minutes.
3. Move your eyes: first, point the eyes up-down then right-left
4. Eyes follow the circular motion, first clockwise, then counterclockwise.
5. Put the tip of nose index finger and look at it in a few seconds. Repeat the exercise several times.
6. Come to the window and peer closely into some of your subject close, for example a leaf of a tree growing outside the window. Then move your gaze into the distance and try to consider most distant objects outside the window.
7. Firmly zazhmurte in a few seconds. Repeat the exercise several times.
8. Again blink for a minute.

And another exercise from the American ophthalmologist William Bates – an unusual, but very effective:

• Sit at the table, lean on your elbows, try to relax the wrist, hand and fingers. RUB your palms against each other until, until they get warm.
• Close your eyes and cover their palms, so that the light falling on the eyelids.
• Stay in this posture for a few minutes. Try to relax and immerse yourself in the darkness. Imagine the darkness at the bottom of a deep lake or the night sky without stars.
• Take your hands from the eyelids, but don't open your eyes. Sit with closed eyes for a few seconds, then slowly open the eyelids.

I hope these tips and exercises can help reduce eye strain and to preserve vision when working at the computer. And, of course, do not forget about the rest, especially outdoors. Day off, spent in nature is very beneficial not only eye health but also on your overall health, which will ultimately give strength for further work.