Nowadays, probably, everyone knows that any equipment representing visual information hurts our eyes.
In spite of this fact, modern life without TV or computer seems impossible.
So we should try our best to protect your eyes from the harmful effects of computer monitor and TV display.
There are some basic principals which help you protect your eyes: • Firstly, opt TFT-monitor or plasma panel instead of CRT-monitor or kinescoped TV.
The fact usual monitors and TV displays blink every second.
It's easy to notice when monitor is shown on TV.
That's why it's better to use HD- monitors and plasma panels, they give less stress to eyes.
• Secondly, try to make display image maximally clear.
Fortunately, all modern TV and monitors have special feature control definition.
To eliminate interference from the TV screen buy quality external antenna or satellite.
If you often use computer it's necessary to buy video card that doesn't distort the real image.
Beside take notice to VGA-cable of monitor, it can be source of additional interference.
Those who spend much time sitting at computer should set more high brightness for picture and video review, and less high brightness for texts.
But notice: eye perceives middle brightness of image, that's why it's useless to set up too high or too low brightness.
Moreover clean screen of monitor regularly, layer of dust and dirt can be the reason of bad display quality too.
• Thirdly, working with computer at night time, be sure to turn on an artificial lighting, for example, luminous tube lamp, which light is similar with daylight.
It's necessary to do it if you read and type on keyboard a lot, because in scant coverage your eyes must always be strained to discern letters.
That's why use legible fonts and enlarge its size if you find it difficult to read.
Need of supplementary lighting fully applies to TV watching at nighttime.
That's why turn on any source of diffused light - floor or wall lamp.
Note that light doesn't reflect on the screen.
The same for daylight in the sun.
If Sun rays get on the screen, close the window blinds.
• In the forth, choose the correct distance from the monitor.
It should be not less than 20 inches, and your eyes should be located at the upper edge of the monitor.
Besides the slope of monitor should be such that its lower part was closer to you then top.
It's recommended to watch TV not less then 2-3 m from screen.
The closer you have the screen, the more strain your eyes to focus the transmitted image.
And it's very important to watch TV sitting, not lying on your back or side.
• Fifthly, use special protective glasses, which ophthalmologist selects for you individually.
• In the sixth, when you use computer, time to time it's necessary to divert your eyes on any object in the room, and every hour to make a break for 5 or 10 minutes.
In fact, when we watch TV or work on computer our eyes blink six times less then in normal condition.
It is fraught with drying of the cornea as the eye much less washed tear fluid.
• And last.
Begin to take vitamin A.
it's responsible for the eye sensitivity to bring light and sharp change of image.
But follow exactly the instructions in the manual, since the excess vitamin is also not good.
That's all.
These simple tips help you to save vision healthy and nutritious.