How to prove that a computer can see. Facts and myths about vision: does computer vision deteriorate, is it harmful to look at a solar eclipse, does glasses deteriorate vision...

Hello, dear readers! The modern rhythm of life implies the active use of new technologies. Not so long ago, a computer was a luxury, but now computer devices can be found in every home, every member has seven from small to large: smartphones, tablets, laptops and netbooks, personal computers.

They are used in all areas of life: for work, study, relaxation, communication with friends. We wake up to the alarm on our phone and fall asleep while watching social networks or movies on our computer or tablet.

On average, a person spends at least 5-6 hours daily looking at a monitor screen. This can't help but affect the eyes.

IN Lately great attention attention is paid to the fact that computer vision deteriorates, its acuity decreases, how to reduce the impact of new technologies on humans and how to maximize long term to keep healthy.

In medicine there is such a thing as “Computer syndrome”. It arose when monitoring patient complaints after prolonged work at the computer. Most of us know and have experienced the full range of symptoms of this syndrome many times. Conventionally, the syndrome is divided into two main sections:

1. General somatic complaints;
2. Complaints related directly to the organ of vision.

The first complaints to appear are those directly related to the eyes:

• Eyes hurt, feeling of pain and “sand” under the eyelids;
• Sensation of sand or broken glass behind the eyelids;
• Redness of the sclera;
• lacrimation;
• Itchy eyes.

General somatic complaints involve the occurrence of tension headaches after prolonged
working at the computer. The syndrome also develops chronic fatigue which is accompanied by drowsiness, lethargy, general weakness, reducing the overall reactivity of the body and resistance to infections.

At long work on the computer it can also develop false myopia or spasm of accommodation. This is characterized by the inability to quickly switch from nearby objects to distant ones; at the same time, they have blurred, indistinct outlines.

Factors influencing visual impairment when working on a PC

Of course, when working at a computer, your eyes get very tired. Firstly, the frequency of blinking changes: normally a person blinks about 10-25 times per minute, but when he looks at a glowing monitor screen - 3-5 times. This leads to the fact that the eyes are not sufficiently moisturized; the cornea is nourished by tear fluid, since there are no vessels in the formation.

If there is insufficient moisture, its atrophy and cloudiness occur, which is great risk in the development of cataracts. It tries to compensate for the lack of nutrition of the eyes by dilating the vessels of the sclera - because of this, redness of the eyes and their injection of blood vessels are clinically observed. Insufficient cleansing and disinfection of the eye also occurs, which leads to the development inflammatory diseases.

At the same time, subjectively we feel a burning sensation and itching of the eyes. The body tries to compensate for the lack of tear fluid and the eyes begin to water.

Secondly, when working at a computer, a person stares at one point for a long time at a flashing backlit screen. At the same time, the eye muscles are in constant tension, permanent shift screen illumination leads to constriction and dilation of the pupil. The eye does not rest. Rising intraocular pressure in the chambers of the eye, which is a risk of developing glaucoma. In this case, clinically the person feels pressure in the eyes and an increase in headache.

Thirdly, if the spasm of accommodation is not corrected, then over time it will develop into full-fledged farsightedness. The muscles that allow you to change the shape of the lens simply atrophy and become sclerotic. All these reasons lead to poor vision.

What to do?

If you notice the above signs, start prevention. First check workplace. The use of computer equipment is permitted subject to the following conditions:

As soon as the first signs of fatigue appear, stop working. Make a 20-20 rule: 20 minutes of computer work, 20 seconds of eye exercises!

Adjust your diet to get the maximum amount of vitamins and minerals necessary for the normal functioning of your vision. Normalize your rest schedule: sleep at least 7 hours a day, in the dark or at dark room. Sleeping in daylight does not allow the eyes to rest properly.

Gymnastics for the eyes

Simple exercises that will help relieve spasm of accommodation, relax muscles and improve eye blood circulation and outflow intraocular fluid. They don't require special devices, can be done several times a day. All gymnastics exercises are performed in good lighting, in a state of rest: the back is pressed tightly against the back of the chair, relaxed, the legs touch the floor, the gaze is directed straight.

The human eye is by nature a mobile organ. The process of accommodation continuously occurs in them, that is, switching the gaze from distant objects to near ones. This allows a person to navigate in space. The eyelids move in the same way. A person blinks approximately 20-25 times per minute.

Blinking keeps the surface of the eyes moist. When a person stops blinking, the mucous membrane dries out and an unpleasant burning sensation appears. And in principle, a person rarely looks at one point, preferring "slide" glance at the world around us.

Achievements of science and technology, of course, make human life easier and more interesting, but at the same time they cause significant harm to health. Vision has suffered significant damage with the development of computer technology. It is difficult to imagine a modern person without a computer. We read from monitors, watch movies, type texts and watch the news.

Everyone who works at a computer has at least once noticed how tired their eyes are at the end of the working day. A characteristic burning sensation appears, a certain sensation "broken glass" In eyes. The blood vessels burst, leading to redness and a headache. All this happens due to eye strain. By looking at one point for a long time and continuously, we deprive the eyes of accommodation movements. We do not move our gaze around us. Lateral vision is blurred. And we stop blinking.

When working at a computer, the frequency of blinking decreases by five times. By looking from the keyboard to the monitor, we imitate blinking. Eyes close, receiving certain part moisturizing, but this movement is not enough. All these negative points are also present when reading books or writing, but very important point is that the book is a solid text with constant brightness of the pages and solid lines.

A computer monitor consists of thousands of small luminous dots. They all flicker. We don't realize it, but it makes things more difficult for our eyes. When reading or typing, we do not take our eyes off and move it as much as possible from side to side. This is an unnatural movement for the eye. Therefore, reading from a monitor is the most harmful process.

Even watching a movie is less harmful to health. In addition, the monitor is surrounded electromagnetic field. Charged dust particles, of course, interact with the human body, and the fact that they negatively affect the body as a whole has not yet been proven, but the damage to vision is obvious. These dust particles settle on the cornea of ​​the eye, irritating the mucous membrane. Damage to the eyes can be caused by incorrectly set monitor brightness, image contrast, too small or pale font, too colorful pictures that you have to look closely at.

Too bright light from the screen will cause painful sensations In eyes. A blurry image will cause the already overstrained eye muscles to strain even more. In addition, the eyes, like any other organ, develop a certain habit. Constantly spending time at the computer, they lose the habit of seeing what is on the side. They get used to focusing on the image that is straight ahead, ignoring peripheral vision. A person begins to see unidirectionally. Vision is three-dimensional in nature, but looking at the monitor we see only a two-dimensional picture.

As can be seen from all of the above, interaction with a computer is not normal process for our vision. Everything that happens when working with a monitor is unnatural and harms the physiological data of human eyes. However, vision is spoiled by books, writing, and performing complex small tasks (for example, needlework). People do not refuse these processes. Vast generations of experience have been accumulated in preserving eye health.

The same should be done with computers. It is impossible for a modern person to refuse to interact with screens, which means he needs to accustom himself to observing simple visual hygiene. It is quite possible to devote very little time to eye health and avoid the negative effects of the monitor.

The simplest methods for maintaining eye health when working at a computer

Gymnastics for the eyes

The old and familiar recommendation of ophthalmologists to do eye exercises is ignored even by professional programmers, who, like no one else, are susceptible to the negative influence of the computer. In fact, everything is very simple. Eye movements are provided by the same muscles as all other muscles in our body. And why are we not too lazy to go to GYM's and pump up your abs, but we can’t devote very little time to maintaining eye health?

Muscles get used to the same type of movements, which are much smaller than what nature intended. Vision becomes unfocused. By doing exercises once a day that will force the eye muscles to perform the necessary movements, we will prevent negative habits from forming and entering everyday life.

Force your eyes to carry out the natural movement of accommodation. Look very close (for example, at the bridge of your nose) for four seconds. Then look far away (preferably out the window). And look into the distance for another six seconds. By repeating this exercise five times, you will stretch your eye muscles.

Make circular movements with your eyes. After twisting in one direction, stop and look into the distance. Then turn your gaze in the other direction.

Move your gaze far to the side. As much as you can. Then sideways and down. Then sideways and up.

Alternate between blinking quickly, relaxing (closing your eyes) and looking into the distance. Repeat this several times.

The problem of children's addiction to computers is very acute. From the early age kids know how to use computers. They mostly resort to games.

Even if the games are active, the child focuses on the image, peers at the screen, strains his vision and it deteriorates. Why is it more harmful for children to sit at the computer for a long time than for adults?

Everything is very simple. Their muscles are not strong enough, and their skills are formed very quickly. The eye muscles quickly learn to look into the distance and the child will develop myopia. Lateral vision will be significantly impaired.

He should sit at a distance of 70 cm from the monitor, on a comfortable chair, so as not to damage the spine, and spend no more than an hour a day at the computer. If such rules have not been followed before, do not despair. Children's vision You can quickly restore it, just eliminate negative influence factors, and do the simplest eye exercises described above.

Vision problems are the scourge of the younger generation, who spend a lot of time electronic devices affecting the eyes, so whether it is damaged by the computer can be answered with confidence “yes”. When active computerization took root in life modern man, many began to notice visual impairment at a young age.

Harmful effects of computer

Even children know about the dangers of a computer. Anyone who constantly works or spends a lot of time at leisure repeatedly notices fatigue and dryness in the eyeballs ah, and also a burning sensation, discomfort. From severe overwork, the microvessels of the eye break down, which leads to headaches. This happens because looking at the monitor for a long time, the eyes are deprived of natural movement; in addition, in a normal state, a person can blink up to 20 times per minute; when looking at the monitor, the number of blinks decreases threefold, subsequently, vision decreases. When working with text documents and reading, the eyes strain 5 times more than when watching films and photographic materials.

The luminous screen of a gadget itself also increases the load, for example, damaging devices and their list:

• telephone;
• tablet;
• laptop;
• computer;
• TV.

Does vision deteriorate and why?

The impact of such a device negatively affects the quality of the eyes’ performance of their functions.

Visual function worsened by the computer. This is due to maladjustment human eye To technical progress, which requires a lot of concentration when working with electronic resources, and nature does not provide for the reflection of unnatural computer light by the living.

Any display consists of many tiny luminous dots, therefore it gives additional load on eyes that do not reflect light, but absorb it, which causes fatigue and inflammation of the cornea and has Negative influence on vision. When reading or writing, the gaze moves slightly to the sides. This unnatural position for the eyes provokes eye strain and harms them. If you compare reading a printed book, it will have a single fixed font of the same color and without highlighting. The only aspect that has a bad effect on vision in this case is dim light when reading and long concentration on the text. When reading on a computer, the load increases due to light and lack of eye movement. In addition, radiation from the computer contains microdust particles that settle on the mucous membrane and cause inflammation, as well as deterioration of vision.

It has been proven that children's eyes get tired faster when they spend a long time near screens, because their eyeball muscles are not yet strengthened enough.

Typing and editing text also negatively affects a person's ability to see well.

When working with textual information, writing and editing, the eyes are more strained, since this activity requires excessive concentration attention, as well as focusing on the little things and details. In addition, the gaze is constantly forced to move from the monitor to the keyboard. At the same time, peripheral vision also decreases, since visual organ constantly looks straight ahead with concentration.

Signs of vision problems

Dry eye syndrome occurs in most people who are forced to sit at the computer for a long time. Fatigue and eye strain are expressed in the following symptoms:

• feeling of dryness in the eye area;
• burning and burning;
• feeling as if something is bothering the eye;
• veil;
• impaired focus and vigilance;
• tearfulness;
• redness of the eyes;
• flickering "flies"
• blurry information on the monitor;
• it hurts to close and open the eyelids;
• painful and uncomfortable sensations that do not go away even after sleep;
• letters, numbers, fonts, and other details are confused.

When negative symptoms You shouldn’t delay visiting a doctor.

These symptoms indicate obvious visual impairment, overexertion eye muscles, deterioration of sharpness when looking, severe fatigue of the eye sockets and difficulties in their restoration. On average, fatigue occurs when active work at the monitor for 2-5 hours. If you discover that your vision has deteriorated, you should consult an ophthalmologist. If this is not done on time, the process will start and it may no longer be possible to limit yourself to taking medications or wearing glasses. This is fraught with development dangerous diseases, such as.

We receive the lion's share of information about the world around us through visual perception, so the first question when vision suddenly deteriorates is: “What to do?”

There are two main reasons leading to decreased vision: any disease or conditions of our life that not only worsen eye health, but also provoke the development of a variety of ailments.

Why does vision deteriorate?

As a rule, we ourselves are to blame for our perceptions, not fulfilling basic safety standards in relation to our basic knowledge of the world around us. The eye can be called a high-precision instrument that should be treated with care and precision.

The problems are mainly related to constant use computer, tablet and other gadgets that we use at work, at home, in transport and generally wherever possible. Let's figure out why vision from a computer worsens, what to do in such cases, how to help your eyes.

Overvoltage

The main cause of eye problems is constant tension, leading to overwork of the organ. Prolonged work at a computer without the necessary rest in such cases, improper illumination of the workplace, even just reading in transport - all this leads to increased fatigue eye. As a result, vision deteriorates.

What to do in such a situation? Drastically change your habits and give your eyes a rest. As a form of such relaxation, a special one has long been developed that allows them to relax.

• Unfavorable ecological situation, smoking and alcoholism are not worse than computers undermine eye health.
• Our passion for fast food, chips and other products Food Industry, it is not clear what it is made from, is unlikely to benefit the body.
• Excessive use biologically active additives And medicines again will not bring anything good.
• Permanent stressful situations, mental and physical stress also do not contribute normal functioning the body as a whole, and therefore the eyes in particular.
• Viral and can also lead to decreased visual acuity.

Aging of eye tissue

Unfortunately, over time we do not get younger, so all tissues of the body are subject to aging, including the retina of the eyes. The pigment contained in it begins to deteriorate, as a result of which vision deteriorates. What to do after 40 years, when you already feel the approach of old age? Of course, it is impossible to stop the process, but it is quite possible to help the eyes. Even if you do not experience any problems with your vision, and your vision is still almost perfect, it still makes sense to help it continue to remain in this condition. Make it a rule to use “live” vitamins that are beneficial for the health of your eyes.

Moreover, the importance of such substances has long been proven, and all products containing maximum amount useful components, are well known. These are blueberries that can be consumed both in fresh, and in blanks or dried. Cherries, carrots, garlic, parsley and other vegetables today are quite available fresh at any time of the year, but they contain greatest number useful substances, which not only heal, but also prevent aging of eye tissue.

Diseases leading to vision impairment

Not only modern technologies and the proximity of old age are to blame for the decline in vision, although today this is perhaps the main cause of problems. Exists sufficient quantity diseases that cause vision impairment. What to do when your eyes suddenly stop seeing well, and instead of a clear picture there is a veil? This is already a cause for serious concern, since such a sharp change in visual perception indicates serious illness, which can lead not only to a significant decrease in vision, but also to its complete loss. If your vision has suddenly deteriorated, what should you do? You should immediately consult a doctor without postponing the visit until later. In some situations, such as a detached retina or a burn, delay can lead to blindness.

Summarizing

If your vision begins to deteriorate, what to do next is quite clear. It is necessary to exclude from your life those factors that can affect eye health:

• First, review your diet and abstain or completely abandon bad habits.
• Try to limit your time spent on the computer, TV and other gadgets. Take medications and dietary supplements only on the recommendation of a doctor and do not self-medicate.
• Play sports for general strengthening body, not forgetting about eye exercises.
• In addition to maintaining healthy image life, you need to contact an ophthalmologist to rule out a more serious disease.

If you follow these simple rules, which will be useful for the entire body as a whole, your eyes will appreciate such care. They will see clearly and clearly for a long time, both near and far.

Instructions

Prepare a tincture of potato sprouts. After washing and chopping the sprouts no more than 4-5 cm, fill half a half-liter jar with them and pour in 300 ml of vodka. After leaving for 3 weeks in a dark place, filter the composition. Take 1 teaspoon 3-4 times a day an hour after meals.

Use the method of improving vision according to Academician Utekhin. This is a special gymnastics to reduce the degree of myopia. For example, in one of the exercises you need to try to read a book with one eye at the maximum possible distance for 15 minutes, and then every 2-3 minutes you need to bring the book half the distance closer to the working eye. If the child small degree Myopia, then this exercise should be performed without glasses, and if it is too much, the glasses should be 2-3 diopters weaker than usual for the child. You can take his glasses, which he used when his vision was better. This system has proven itself well and has helped improve vision for many.

Related article

Sources:

• restoration of vision in children

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Thanks to vision, this invaluable gift of nature, a person receives about 80% of information about the world around him. That is, vision is much more important than all other senses - smell, touch, hearing and taste sensations, taken together. If it gets worse, it causes noticeable discomfort to the person.