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At the dawn of the information age the main users of computers were adults. Today the situation is quite different: every day millions of children use computers at home and at school, for education and entertainment.

In order to succeed in school the child must master a set of visual skills such as fixing the exact gaze, accommodation (focusing the image), binocular vision, convergence (eye turn), peripheral (side) vision and central analysis (image recognition). Working with a computer requires some adjustment in the work of all these mechanisms compared with other types of visual activity. This is especially dangerous for children whose visual system is still developing. Children may experience many symptoms associated with the professional operators of personal computers. Continuous operation of the monitor can cause eye irritation, fatigue, blurred vision, headaches. However, if adults are uncomfortable in most cases, sooner or later children may lead to severe functional impairment in the visual system.

In recent years, ophthalmologists have noted an increase in the number of patients complaining of typical symptoms of eye fatigue when working with a computer. American Association of optometrists introduced the concept of “computer eye syndrome” (Computer Vision Syndrome) which includes a “complex of visual and ocular symptoms which appear when you are working with a computer.” Symptoms related to this condition most often include feeling tired eyes, the mist before eyes, headache, redness of the eyeballs, neck pain, back pain, double vision visible objects, excessive light sensitivity. Studies have shown that bearing children can vary under the influence of eye strain, so that incorrect posture can also be attributed to manifestations of computer visual syndrome.

Unfortunately, children often have a limited degree of self-control. Many of them continue to do interesting work with great concentration until the complete depletion of view (eg, playing video games for hours without interruption). Prolonged activity without a significant rest breaks can cause spasm of accommodation, eye irritation, fatigue, all parts of the visual system.

Problems with accommodation (focusing images on the retina) may occur as a result of examining long-loved object as a book or computer screen. In some cases, eye ciliary muscle responsible for the optical focus is so adapted to the observation of an object at a fixed distance that can no longer be free to adapt the optical power of the eye to the contemplation of another object. Sometimes the ciliary muscle remains in a fixed (spasm) state for a long time after work. Eye irritation may occur due to insufficient moisture eyeball tears due to too few blinking. In addition, the monitor is usually located in the field of view greater than a book or a piece of paper, so the upper eyelids opened wider and rate of evaporation of tear fluid is increased, leading to drying and irritation.

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Computer securely and thoroughly went even more rushed into our lives.

Very often young parents for their young child to buy a computer almost from the cradle.

Of course, parents with affection and a smile watching their child learn the basics in learning the computer, probably hoping to grow a second Bill Gates. But the results of studies conducted in the UK for about 10 years ago prove the opposite. British scientists and psychologists in one voice say that the addiction of children under 10 years of computer knowledge can slow the development of the child drown out the real interest in children’s games as well as completely suppress interest in contacts with children.
If previously it was important to teach children computer literacy, now there is a new task – to protect the child from excessive contact with the virtual reality.

Cause for Concern

BBC conducted a study which revealed that young, enthusiastic people who are fond of computer find it hard to concentrate on the book page even for 30 seconds. Instead of reading it, following the computer habit, they quickly flip through all the pages.

Another study suggests that excessive use of teenagers online in three years will lead to significant “rejuvenation” of mental illness.

Psychologists are confident that the computer should not stand in the nursery: “Its place is in the living room or any other general area in which everyone has access.”

Some parents are very pleased that begin to play computer games with their children. This allows them to understand not only the interests of their children but to develop much closer some skills – even if not the most useful but fun.

However, a more effective way, in his opinion, is the signing of a family agreement, which will indicate how long a child can spend in front of the monitor.
“Computer” time must be limited to a maximum of two hours a day but today children spend in front of the monitor up to five hours daily.

It is easy to teaching

With respect to adolescents, their communication with the computer is limited hard because they actively use it for homework. Psychologists believe that the grown-up children can put a computer in the room so they can engage in quiet, but this does not mean that they are day and night watch the monitor. “Computer” time must be limited to a maximum of two hours a day but now the children spend in front of the monitor up to five hours a day.

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It is difficult to find a family in which there would not be a computer. But not every family can boast of their own living space, where there is a separate children’s room and a separate room to work. From this follows that from an early age children are accustomed to seeing their parents at “miracle machine” with enthusiasm, their eyes are staring into the monitor and constantly crawl the mouse on the desk. All this, in turn, leads to an irresistible interest in children to the computer, keyboard, mouse, disks, – in short, everything that is connected to a computer. There is a big question – what to do with the problem of ‘children and a computer? ‘ We will try to find out!

Remember that if you taught the kid to watch on your computer only development programs and cartoons your children and your computer will find no more “intimate contact” at school age – that’s impossible! A child with each subsequent day will occur at the beginning of interest to movies, then to the Internet, and then to the more spicy things, with which Internet is full! All of this will leave plenty of time, the child will become couch potato, gambling, and most memorable moments of his childhood with the boys will not in the yard with the ball and sleds, but in front of the monitor.

Let’s start in order:

1. Internet – this is primarily an enormous amount of useful information! Look at yourself, you are currently using this tool to find the right knowledge. Therefore, until a certain age, parents need to filter the flow of information from the network and files on your computer;

2. Games – the attribute, without which the computer is not available. There are plenty of interesting games to play. It should be clear to distinguish between necessary and brutal, vulgar, stupid games. Do not succumb to the entreaties of the child to buy what he wants. If the child has already learned to install the game himself – remove unnecessary content filter on your computer. Now a lot of games that are designed for kids from four years – they develop logic, taught reading, writing and mathematics. This may be good games related with travel and fairy tales. And there are all sorts of “Shooter”, where is a lot of blood.

3. Movies – this is at the discretion of the parents, again, constantly filtering and checking the contents of your computer. However, until a certain age, let it be a cartoon;

From an early age children need to program that computer is the thing for school, work, this is the correct thing! If the child is already quite an adult, is going to school – meet him with interesting sites about animals, plants, historical, and technical subjects.

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The correct distance to the monitor is about 45-60 cm, preferably at eye level, the right lighting – natural light falling on the left and in the dark – the lamp should illuminate only the document you are working with the child, not the screen, to avoid glare, complicating the work.

Many parents are unaware of the existence of the norms established by the Ministry of Health to use your children’s computer. These norms are very strict but objective. For first time at the computer should not exceed 10 minutes per day, only 15 minutes is recommended by child. High school students require no more than 30 minutes of continuous work at the computer for the first hour of lessons and 20 minutes on the second. Safe standard of computer games that are so fond of modern teenagers is 10 minutes for children and for junior high school students – 15 minutes. In addition, computer games before bedtime are strictly prohibited.

In order to reduce the harmful effects of awkward postures it is necessary to choose the right furniture workers. A specialized children’s furniture will help to reduce stress and maintain the correct position when working at the computer. Chair on castors, with height and tilt adjustable backrest, without armrests, rotating around its axis. Table – with a special pull-out board for the keyboard.
IMPORTANT!

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In the room with a working computer the physical characteristics of the air changes: the temperature can rise to 26-27 degrees, relative humidity – to fall below normal (40-60%) and carbon dioxide – to increase. The air is ionized, the number of positive (heavy) ions, which adversely affects the performance. Some people, including children are particularly sensitive and painful to react to these changes in the air. They have a scratchy throat, cough due to increased dryness of mucous.
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Do not forget the high-frequency electromagnetic fields which create a deflecting electromagnetic system monitor. Be careful: in modern models such radiation is most strongly from behind and above the monitor and the front slightly. So you cannot lean over the monitor, put it best back wall to the wall.
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The computer can create an electrostatic field of high tension, which acts as a time at a distance of two feet from the screen. The modern monitors have special filters that reduce the intensity of the radiation. Air conditioners, dust collectors, ionizers, dry cleaning and room ventilation reduce the harmful effects of the electrostatic field. It is also effective washing with cold water immediately after training on the computer.

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The human eye formed during the long evolution in the twentieth century was not well suited for use with a computer image. The picture screen is different from the natural fact that it is luminescent and not reflected. The visual load increases significantly because of the need to constantly move the eyes from the monitor screen to the keyboard and paper text. Often the inability to correctly and efficiently organize the workplace (the glare on the monitor screen from external sources, improper distance from the eyes to the screen, an unfortunate choice of colors, too much brightness) aggravate the situation.

The greatest common causes fatigue work online. A special eye strain is a computer graphics – the implementation and adjustment of working drawings from a PC. At risk of “computer syndrome” are active computer users aged 18 to 40 years.
The symptoms of computer eye syndrome

Complaints of people spend most of their time behind the screen of the monitor can be divided into two groups:

- Optical

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blurred vision (blurred vision);
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slow refocusing from near objects to far and vice versa (disturbance of accommodation);
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doubling of objects;
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rapid fatigue when reading.

- Physical

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burning eyes;
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feeling of “sand” under the eyelids;
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pain in the eye sockets and forehead;
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pain when moving eyes;
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red eyeballs.

The study of visual functions in humans for several years worked for the PC found the decline in accommodation compared with age-related norm and a greater frequency of myopia compared with those of the same age, not related to the computer. Individuals placed on the above complaints, all of these changes were more pronounced. Investigation of the effect of the work itself with a display on the eyes showed that per shift is a reduction of the amount of accommodation, and some users have developed a temporary, “false” short-sightedness.
Recommendations to combat “computer syndrome”

Do not neglect a visit to an ophthalmologist and not self-medicate.
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Use special eye drops, tear replacement
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Limit the time of the computer no more than 4 hours per day
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Do mandatory breaks during the work at close range every 20-30 minutes.

There are special glasses with progressive lenses which correspond to the zone of clear vision eye movement while working at various distances. The use of it gives reduced visual fatigue and improvement of accommodation compared with conventional glasses to 85% of workers.

Subject to these recommendations reduced the number of errors committed by the operator, especially in the afternoon. The glasses are comfortably in the street, under a cloudy sky – clearly visible and contrast, and on a sunny day they do not pass into the eyes of a very active part of the shortwave spectrum. Thus, glasses with a computer filter can be recommended for continuous wear. And it is very important because over 50% of computer users are people with glasses.

These days, when computers are used practically in all fields of our life, having a computer is a must. There exist different brands to choose from. Those who are considering purchasing HP, might be interested in looking through this hp envy 14 review which can be found on review hp envy 14 site. Should the model be of any interest it is advised to read some more review hp envy 14 booklets and specifications to compare the laptop with others and make a grounded decision.

Children living in the modern world often replace the interaction with friends, playing sports, outdoor games in spare time, walks in the fresh air with a computer. It is difficult to deny that the computer allows the child to develop, obtain information, communicate … However, many parents are unaware that many hours sitting at a computer can cause a computer’s syndrome, which is expressed in a spasm of accommodation – long-term static strain, and dry eye syndrome, arising from the drying surface of the cornea from a rare and blink continuously looking at the object of work.

In the course of communication with the computer kids have to solve increasingly complex spatial and gradually logic puzzles that require considerable mental and eyestrain, since the relatively short distance we have to consider the on-screen small letters, pictures, numbers, dashes. Periodically glancing from screen to keyboard the child constantly re-makes accommodation of the eye. This causes stress the eye muscles which increases light pulsing screen. Thus, the load on the eyes when communicating with a computer is very different from other types of load at visual work – reading, for example, or even watching TV.

Another important factor is the neuro-emotional stress. It’s no secret that communication with the computer, especially with game programs, is accompanied by a strong nervous tension, because it requires a quick response. Short-term concentration of nervous processes is clearly a child’s fatigue. Working on the computer he experiences a kind of emotional stress.

A sitting position increases the statistical burden and lowers the already low, the motor activity of the modern child. As a result of the long seat in a fixed position, pain in the muscles of the neck, back, headaches, aching joints of the hands can cause various diseases of the locomotor system. Prolonged constrained posture makes it difficult to breath.

Statistics show that even work at a computer for 1-2 hours causes 73% of adolescents overall and visual fatigue, while the usual training sessions fatigue occurs only in 54% of children. Often, fascinated by computer games, kids do not notice the fatigue which then strongly affects their vision. Fatigue, distraction of attention, anxiety begin to appear in children after a 15-minute work on the computer, and after 20 minutes in 25% of children were reported by experts from the unpleasant effects of the visual apparatus and the central nervous system.

Accident prevention

Prevent the appearance of fatigue is possible. To do so limit the duration of the child spending time at the computer, regularly do exercises for the eyes, organize the workplace, use only high quality computer programs relevant to their age, ventilate the room where the computer after each hour of work.

Influence on computer vision, in addition, can be reduced by buying a good modern monitor with high resolution and high image refresh rate which significantly reduces the flicker. The optimum screen size for your baby is 15 inches, for a student you can buy 17-inch monitor.

These days, when computers are used practically in all fields of our life, having a computer is a must. There are different brands to select from. Those who are considering purchasing HP, might be interested in looking through this hp envy 14 review available on review hp envy 14 site. Should the model be of any interest it is advised to read some more review hp envy 14 booklets and specifications to compare the laptop with others and make a grounded decision.