Advice 1: What monitor is less harmful for eyes

Currently, the presence of a computer in the house is almost essential. In this regard, there is a problem such as deterioration of health. Of course, not easy and not fast to completely eradicate this problem. But to deal with her right now not only possible, but necessary.
What monitor is less harmful for eyes
You will need
  • Before you opt for any particular monitor, to learn more about its properties.
Instruction
1
CRT monitor or the first generation monitors.
The monitor CRT is based on the CRT. A CRT is an electronic device that converts electrical signals into a visible image. Simply put, we see the image on a CRT monitor using a special tube. Through this tube passes the light, then it hits a reflective surface, and then displays the image.

These monitors are large, heavy, they consume a lot of energy. As well as, negatively affect vision by electro-magnetic radiation. Which extends behind and on the sides of the monitor at a distance of 1.5 m. If you use often occurs the phenomenon of "flicker", which contributes to reduction of visual acuity. These monitors are now discontinued, but you can buy used. And although I spend about 50$, this monitor will bring great harm to health.
2
LED monitor.
On these screens, instead of electric lamps are light emitting diodes. The main principle of this monitor they. These are little lights, through which we see the image on the screen. The led gives crystal clear black and white, providing high contrast, clarity and brightness. Colors seem to be more natural, thereby, increases his attention.
These monitors consume almost 50% less electricity than CRT. The price is also attractive - from$ 100. They are easy to use, does not occupy much space and practically do not put vision. In the production of mercury-free, environmentally-safe factor.
3
LCD monitor.
Liquid crystal screens are made on the basis of the substance cyanophenyl, which is in a liquid state, but retains the properties of crystals, hence the name. Today is the most current monitors.
These monitors are based on liquid crystals. When given the signal, they in turn light up the screen, thereby giving the image.
The cost depends on the diagonal, but on average from$ 80. With a simple device, the absence of electro-magnetic radiation and a reasonable price, LCD monitor and conquered the world.
4
It turns out that the LCD display is the safest display. But unfortunately, even it is possible to ruin your eyesight if you do not follow the rules of the computer:
- the monitor must be installed at a distance of at least 50 cm away from yourself at eye level;
in addition to the main lighting resort to additional;
- avoid reflections and glare;
every hour of work at the computer get distracted for 15 minutes to do exercises for the eyes.

Advice 2: What is the harm from the Internet

It is useless to talk about the need for Internet or not – it is, and there's nothing he can do. The global network has become so much a part of our lives as running water or a car. Nobody is trying to "ban" the Internet, but traveling the world wide web, you need to remember that the journey is may not be safe, first and foremost, for the health of the user.
What is the harm from the Internet

Psyche




The first thing that comes to mind when starting a conversation about the dangers of the Internet, the so-called Internet addiction. But to explain what it is, can not do everything. Psychologists distinguish five types of Internet addiction:

1. An irresistible desire to visit the erotic and porn sites, and to engage in "virtual sex".
2. Overwhelming desire to tie new acquaintances, the desire to collect as many "friends" in various social networks.
3. The compulsive need on the Internet: hours of debate on the forums, participating in various promotions, etc..
4. The overload of online information, resulting in constant search of information, the endless travels by news sites, etc.
5. Dependence on online games that people literally could not put it down.

Symptoms of any of the forms of Internet addiction are

- obsessive desire to constantly check the "PM" in social networks, electronic mail;
- irritability, bad mood when unable to go online;
- a feeling of euphoria during Internet sessions;
- increase the time spent in the network;
- minimize contacts in the "real world";
- neglect of their working and educational responsibilities;
- changes in sleep and wakefulness, insomnia;
- neglect their appearance and personal hygiene.


Some researchers believe that the most prone to Internet addiction people belonging to the so-called dependent personality type. In addition to dependence on the Internet, they can be to the same extent and subject to addiction to gambling, alcohol, drugs, food, etc. As a rule, these people, on the one hand, afraid of being rejected by society and fear of loneliness, on the other – have a fairly narrow circle, can not tell others about their experiences. Often they do not know how to make decisions and to take responsibility for their lives.


In order to get rid of Internet addiction, the need for professional psychotherapy. In fact, this problem is the same as with any other addiction, and the success of treatment is determined by the desire of the person and properties of his personality and the depth of the problem.


Peripheral nervous system



Neurologists believe that the extremely long daily exposure on the Internet can cause sleep disturbance, increased nervous excitability, weather dependent, tendency to irritability and depression.


People who spend too long in the network, appeal to neurologists with complaints of dry eyes and back pain. They also revealed carpal tunnel syndrome, which is characterized by lesions of nerve trunks of the upper extremities, which is associated with long-term overvoltage motor muscles.


To reduce the risk of these problems, observing the sanitary norms of the computer to make breaks every 1.5 – 2 hours, to make sure that the distance from eye to monitor was optimal (about 70 cm).



Vision



Ophthalmologists believe that active Internet users are seriously at risk of acquiring such disease like computer vision syndrome (GTC). Manifestations are varied: burning sensation and sand in the eyes, pain when moving the eyeballs, pain in cervical vertebrae and in the forehead. With the progression of the disease can develop myopia, an overall decrease of visual acuity, diplopia and other unpleasant consequences.


To avoid this, doctors recommend the use of moisturizing eye drops to get rid of excessive drying out of the mucous membrane of the eye; to work at the frequency of the monitor 85 Hz, as well as to make sure that the distance to the monitor was at least 60 - 70 see Also hazardous work in a dark room in the dark.


Musculoskeletal system



Podiatrists say that many hours sitting in front of a screen in an uncomfortable chair negatively affects posture: the spine is deformed, bent, and develops acute low back pain. That problem is particularly relevant for gamers, conducting a lot of hours in online battles.

That posture did not suffer during the Internet sessions, you need to take breaks for exercise and to take care of a comfortable working chair that has a lumbar support that can significantly reduce the load on the spine.
Search
Is the advice useful?