Why do we need sunglasses? Of course, many perceive sunglasses, first of all, as a fashionable accessory and a stylish addition to their image. But besides this, undoubtedly, an important mission, sunglasses brings a lot of benefit. First, the long-term effect of ultraviolet causes a variety of eye diseases - from damage to the lens to cancer. Secondly, on the bright sun, our eyes are in constant voltage and the muscles of the eyes quickly get tired. You should not forget that small wrinkles appear from the squinting around the eye - "goose paws", get rid of which, unfortunately, it is impossible. Sunglasses selection parameters The eye protection against ultraviolet radiation is the most dangerous for our eyes - ultraviolet radiation is divided into UVA- and UVB-waves with a total length of 290-380 nm. These waves are not equally harmful, but it is desirable that sunglasses protect the eyes and from those and from others. It is best that the sunglasses are inscription: "UV-400", meaning that lenses protect the eyes from all ultraviolet radiation with long waves less than 400 nm. True, it is not always that the presence of such an inscription guarantees the eyes of the appropriate protection - but it is already on the conscience of manufacturers and sellers of sunglasses. Many believe that sunglasses with almost transparent lenses do not protect their eyes from ultraviolet radiation. However, the transparency or color of the lenses have nothing to do with the protection of the eye from ultraviolet. In fact, such protection provides special additives (films) into the body of the lenses of points or its surface, which are colorless. And the color of the lenses or the degree of their dimming affects the protection of the eyes from too bright light. Eye protection from too bright light According to European standards, according to the degree of protection against light, sunglasses are divided into five groups: the points of the 0th group passes 80-100% of the light (the next or slightly darkened lenses) - protect from the Sun, breaking through the clouds into the cloudy weather. 1 group - passes 43-80% of light, designed for inactive sun. Group 2 - passes 18-43% of light, suitable for sunny weather. 3 Group - passes 8-18% of light - for active summer sun. 4 Group - 3-8% of light (very dark lenses) - are designed to relax on the sea or ski resort, where the sun rays are reflected from the water or snowy surface. Due to the high degree of dimming, it is categorically not recommended to drivers - they are better to use sunglasses of the second or third group. For those who have contact lenses, it is worthwhile to know that there are lenses with protection from ultraviolet, besides, they are approximately the same as the usual. By purchasing them, you get a number of advantages at once - you have protection not only from solar ultraviolet radiation, but also from computer. In addition, you can calmly buy any sunglasses - at least cheap, albeit on the market, as they will be needed only to protect against bright sunlight. The color of the sunglasses lenses should be known that not all the colors of the lenses sunglasses are equally pleasant for our eyes, so you need to choose glasses with bright and unusual lenses colors carefully. For example, it is believed that brown lenses are most pleasant to human eye. But sunglasses with blue lenses doctors do not recommend buying children. Therefore, for better orientation in the color range of lenses of sunglasses and in their eye effects, we give a table: color lenses function of glasses where to use yellow for sports, fashionable accessory for sports or staying outside on cloudy weather, indoors light green, purple, Pink, Blue Fashionable Accessory for Sunmarket Sun or Rooms Dark Green Promote Eye Tossability Reduction For Bright or Medium Bright Sun Dark Gray Provide Real Flowers Perception For Bright or Medium Bright Sun Brown Provide Good Visualization For Bright or Medium-Bright Sun Mirror or with a colored mirror effect effective from the bright sun, significantly reduce the amount of light reaching the eye for relaxing in the mountains, on the beach with a strong sun transparent ("white") only as a fashionable accessory with a weak sunlight or in an elevated dimming is not relevant for everyday life, dangerous for drivers with very bright sun : Highlands, desert, sea. The gradientness of various colors or one color is applied depending on the color of the lenses and their dimness for the mid-bright sun, indoors. Material of manufacturing a lenses of sunglasses Currently, the lenses of sunglasses are made from either plastic or glass, and the glasses with plastic (polymeric) lenses are much larger. It used to be believed that glass lenses are better, but with the development of new technologies plastic became much better and now he is not inferior to the glass. But sunglasses with glass (mineral) lenses are considered dangerous due to their fragility, especially if a person leads an active lifestyle - with each fall, they can break. If the points fall together with their owner, then crashing, they can hurt his eyes. That is why it is not worth buying glasses with glass lenses at all - it is even forbidden in the USA. In addition, glass lenses faster and more fogging and much harder than plastic, respectively, such glasses are less comfortable and comfortable. Like the only advantage of glass lenses is that they are harder to scratch. Fashion trends Sunglasses Spring-Summer 2008 Form Style Fashionable in 2008 Sunglasses - Retro. Therefore, pay attention to the large, streamlined rims in the style of 50-60 years of the 20th century. In shape they can be both round and rectangular. Also uses the contrast of the volume - if the frame of sunglasses is massive, then hacks should be thin and vice versa. The form "Aviator" remains fashionable, as well as masks - both massive and lungs. But the sports forms of sunglasses this season are not very relevant. Color In 2008, sunglasses with rims of restrained colors - black, brown, gray. In some collections of sunglasses there are shades of purple or lilac, as well as imitation of animal skins or snake skin. The design as in the past seasons as decorations of sunglasses is used applications from rhinestones or pearl, and in expensive models - Swarovski crystal crystals. The characteristic feature of the fashionable spring-summer of 2008 sunglasses are openwork towers, resembling forged patterned lattices. Some models appeared medallions logos inserted into towers. How to determine the fake? Of course, in the market for 20 hryvnia, you will never buy real Italian or French designer sunglasses, so you can not even look at the appropriate inscriptions on the scraps. However, it happens that in stores, and for a solid price sell fakes. A specific feature of the authenticity of sunglasses is the inscription Made in Italy or Made in France. Forged brands most often masked inscriptions ITALY, France, Design Italy, Italian Style, Produce for Europe, USA and others. What do some inscriptions on sunglasses mean? On compliance with sunglasses, European standards testifies the "CE" icon. In the passport, which must be present at expensive sunsposses, it should be indicated that the glasses correspond to the standard N 1836. If there is an inscription "Glare Protection" in the sunscreen passport, this means that they can "extinguish" glare from reflective surfaces - for example, water. How to care for sunglasses? So that sunglasses served as long as possible, store and wear them in a special case or bag. Wipe lenses are needed soft, better than a special napkin. If the glasses are strongly contaminated, rinse them with water with soap, shampoo or tool for washing dishes. There are also special sprays for lenses of glasses.
Why do we need sunglasses
Contrary to popular belief, sunglasses are glasses, first of all designed to perform two main functions: save eyes from bright light and take care of ultraviolet radiation, and only then a fashionable and stylish accessory.
The choice of sunglasses should be treated extremely carefully and responsibly, because otherwise the consequences can be fatal - from fatigue, dizziness and up to eye diseases, and loss of vision.
Why? Everything is simple. If you go without sunglasses and shines the bright sun, then you involuntarily clogged - this is a natural eye protective reaction, so as not to skip ultraviolet.
And if you go to darkened glasses that do not have filters and do not protect the eyes from the harmful effects of ultraviolet, then pupils expand and ultraviolet falls on the retina, passing it in passing.
How to choose high-quality sunglasses
It sounds trite, but it is necessary to buy high-quality and branded points in specialized stores or optics stores - there are treated for the quality of the instance you bought, and the instance itself promises to be reliable. You can also check the quality of points using special devices.
During frequent staying in the sun in the right and working glasses, the area around the eye will remain lighter - this means that the lenses of points perform all the promises declared by the manufacturer and protect their eyes from a detrimental radiation.
Always see what is indicated in the passport coming together with branded points - there must be a serial number of the model, its name, the country's country, care instructions, and the category of the UV filter is indicated, that is, how good your eyes will be protected from radiation . UV filter is the degree of protection against ultraviolet rays. For full-fledged eye protection, it should be no less than 70%.
When choosing sunglasses, it is mandatory to pay attention to the category of a protective filter (Cat.), Which is indicated on the inside of the alignment of the glasses. It is this feature of the glasses that characterizes the ability of the lens to protect the eyes from visible sunlight. There are 5 categories in total:
- Cat.0 - a light lens that is completely useless and does not protect against ultraviolet radiation;
- Cat.1 is a slight blackness and it is suitable for protection only on a cloudy day;
- Cat.2 - the average degree of dimness, which is applicable only in conditions of not very bright sun;
- Cat.3 is a fairly dark lens, which is ideal for relaxing on the sea, in the mountains and for everyday life;
- Cat.4 is the highest degree of protection that practically does not miss light. These are special glasses and it is better not to wear in ordinary life, and do not drive the car.
Most branded points are sold complete with a cover and a microfiber cloth.
Very often, potential buyers and experts argue which lenses are better: glass or plastic. But ophthalmologists have long been one for a long time in this matter - both materials are equally good, the plastic has not been inferior to the glass on protective functions, but such glasses are much easier and less traumatic.
Choosing sunglasses, remember one rule, the eyes are more comfortable to look through the shades of shades of gray, green or brown. This minimizes eye fatigue.
Hold the glasses in your hands and check the quality of the selected points - all cogs and bolts must be firmly fixed, the arms should not be discharged or too tough.
Remember that glasses points should not distort the real colors of items.
For drivers are especially relevant:
- polarized glasses (as they protect from glare and bright straight light);
- graduated (dark top and light bottoms - such glasses do not make it difficult to review, but perfectly protected from sunlight).
Lovers of relaxation on the beach and in the mountains need to pay attention to the mirror glasses - they do not heat up in the sun and perfectly reflect the sunlight.
The irony about large-sized glasses are very often inappropriate, because glasses with large glasses are the most correct and reliable - they protect not only eyes, but also gentle skin around the eyes from premature aging.
Sunglasses and face form
Choosing glasses, focus on your face form. Experts allocate 4 forms and now we will tell you what sunglasses will suit to which person. However, remember that everything is very individual. The following statements are suitable for both women and men.
Round face
If you are the owner of a round face, then you better look at square rims and avoid round forms.
Oval face
People with an oval form of face can choose any glasses - they are lucky on which all glasses look good. However, this does not cancel the importance of fitting - after all, glasses should still "sit" on the nose.
Triangular face
People with such a form of face can quietly buy "cat's eye" glasses or any round frames.
Square face
The owners of the square form of the face should pay attention to the glasses of rounded or oval forms.
We hope that our advice will help you easily choose such a difficult accessory as sunglasses, and the discounts from the site promcoda.ru will be by the way, because it is precisely with the help of industrial and stocks that can be purchased quality goods for a reasonable price.
Spring finally came, and now we have a lot of warm, joyful and sunny days. At least, I want to hope that the sun will light often - because we have so dreamed of this all long winter! However, today's sun is not only warmth and light, it is also an aggressive radiation that affects our skin, hair and the whole organism.
And most of all in sunny summer days they suffer, if you do not protect them from bright, dazzling and even scorch rays, especially in large cities, where heat and light are reflected from glass, asphalt, metal, concrete and other materials used by man for a civilized device Life.
Meanwhile, the eyes are not only vision and beauty, this is what reflects our inner world, the "soul mirror", as the ancient philosophers said. And of course, in the summer, the eyes should be protected, and the simplest solution is to buy sunglasses.
In fact, the glasses have long become a practically necessary accessory of a modern person, but if the glasses with diopters implies a serious attitude, a visit to the doctor and individual selection, then the sunscreen points are different. Often we buy and wear such glasses, without thinking about whether they are suitable for us or not, and how they will affect our vision, well-being and health.
What are sunglasses for what we need when wearing sunglasses
What are sunglasses for? As follows from their name - to protect the eyes from the Sun, however, many people wear them just like that a tie, clock or handbags. Such people wear glasses not only on a sunny day, but also in cloudy weather, and at twilight, on the beach, in stores, visiting and business meetings - they are just used to hiding behind them.
Meanwhile, the need for sunglasses occurs not so often when the lighting is really very bright - for example, in summer on the beach or in the city, as well as in certain climatic conditions - in the desert or, on the contrary, where there is a lot of white snow and shines the sun . Drivers departing in a long trip also need to have sunglasses, as a bright reflection of light from the road can lead to accidents.
If wearing glasses constantly, it may occur to photophobia - fear of light, and even even quite normal lighting will be unacceptable for a person, will cause discomfort and pain in the eyes.
So listen to the recommendations of the doctors still standing, and they recommend not to wear dark glasses without much need, choose them correctly and in general, if possible, to teach eyes to light, because nature itself has provided protective mechanisms for the eyes.
Do not wear dark glasses in public transport, in the evening or on cloudy days, since the soft rays of the sun are needed to our eyes. If on a cloudy day to limit daylight access to the eyes, then pupils are constantly expanding, and this can lead to violations of vision, and then, after 40 years, and to glaucoma.
How to choose sunglasses?
However, sunglasses are still needed, and it is better to select them with the help of an oculist who can determine the individual features of your vision.
Remember that the main function of sunglasses is not decorative, but protective, although of course they must have elegant and modern design. According to the degree of protection against ultraviolet radiation, glasses can be divided into 5 categories.
The weakest protection is the zero category, and such glasses are passed to 80-100% of visible light. The higher the category, the stronger the defense: the first passes from 43 to 80% of the light, the second - from 18 to 43%, the third is from 8 to 18%, and the fourth is only 3 to 8%. Today, various glasses are produced, with different additional coatings: photochromic, water-repellent, anti-reflective, hardening, etc. Good sunglasses must correspond at least three main parameters:
- First of all, they must ensure the eyes of comfort with a bright sun, reducing the visible light - the sun should not be blind. The chromaticity and contrast of the image should be preserved, vision - remain clear, but should not be optical distortion.
- The following requirement is safety. An invisible ultraviolet part of the solar color should be completely absorbed by sunglasses completely, otherwise there may be diseases that ophthalmologists are called sun-dependent: photoretinite - the backbone of the retina, the clouding of the cornea, cataract, etc. These diseases are not manifested immediately, but they make themselves to know over time, and then you have to be seriously treated.
- And of course, sunglasses must fit your image, individual features, being fashionable, beautiful and inadequate. Of course, it is not necessary to choose dear glasses, but it is worth considering all the requirements for them.
Fans of colored glass should be remembered that the predominance of one of the colors in the usual range can lead to rapid fatigue with all the ensuing consequences. Recently, dyes for polymer lenses have become very widely used in Russia, and the colors and shades of dozens. How to perceive it?
Just as a fashion that does not have anything to do with health and preservation of vision, and rather can bring harm than protecting the eyes.
Do not pick up sunglasses to the color of hair, clothes or accessories, as well as the color of the lenses to the color of the rim - it is completely wrong, and can not only aggravate problems with vision, but also cause the development of mental diseases.
Imagine how an easy-made person will feel if it all the time will look at the world through pink glasses? The main criteria when choosing sunglasses should remain protected, security and comfort - otherwise it is better not to wear them at all.
The density of the stew filter also depends not only on the degree of their darkening, but also from color. Do not distort the color perception of green or gray lenses, yellow are good in cloudy weather, mirrored, reflective light - by the sea or in the mountains.
What material is optimal for the manufacture of lenses? Experts consider mineral glass to be the best material, as it does not distort the visual perception and at the same time ensures the eyes maximum protection. Such glass is made from natural quartz sand with additives, and its properties do not change over time.
Plastic lenses with acrylic coating are also well protected by eyes; Different with ease, almost weightlessness, but they are vulnerable, and they are easy to scratch them.
There are also more expensive and durable lenses, for example, from a nylon, providing better flexibility, or polycarbonate, which does not be afraid and does not crumble - such lenses are often used in the manufacture of sports glasses.
Photochromic lenses, which are also called "chameleons" are very comfortable. The principle of their action is known to all: they are darker in the sun, and in the room become transparent. There are even photochromic lenses designed specifically for drivers - DRIVEWEAR.
The general public glasses were offered in America in the 30s. Before that, they used exclusively pilots. Initially, they were called "anti-pass protective" glasses, but after some time, they were painted as "expellation ray", that is, Ray Ban. And soon points began to enjoy tremendous popularity not only in the environment of military pilots, but also among the civilian population. Initially, the glasses had a strict drop-shaped form. And it was not a whim of the local designers, but an absolutely scientific approach. It is this form of glasses that corresponds to an objective visual field of the human eye. Now, over, sunglasses are not consistent with such parameters. They have become an accessory, fashion element, style-forming link. So why do you still need to wear sunglasses? What do they protect us from?
1. From the Sun.
Dazzling sun, luminous in the eyes - it is just unpleasant, so we wear glasses. Some people cannot go out without them. Someone complains that he does not see anything, a tear runs out of his eyes, someone sneezes. Everyone has their wisdom. Well, there are people who normally cost without this accessory.
Looking at the sun, or in general while on the street in sunny weather, we instinctively pushed and fringing. And this leads to the formation of premature wrinkles and not only around the eyes, but also all over the face.
2. From snow
The glasses are protected from bright light emanating from snow. Sometimes the whiteness of snow reaches such power that we cannot calmly look at the items around us, but in the snow and is suppressed. The fact is that snow has a good reflectivity. And on its own whiteness itself and this property deteriorates to worsen our vision. Created glare, due to a painful solar light, also blind us.
Points are indispensable when skiing and classes in other winter sports, especially if it is associated with high speeds. The reflected light from snow or ice is a direct threat to the ski riders glare are dangerous and when driving a car in winter tracks, when the roads are drowning in a snowy white.
3. From ultraviolet rays
It is known that with a long and permanent stay in the sun, ultraviolet rays can damage the cornea of \u200b\u200bthe eye. And this in turn leads to a cataract or in some cases to the degeneration of the retina of the eye at the molecular level. With age in most people, the cataract of the eye is developing to one degree or another, and when exposed to sunlight, this process is accelerated. By the way, UV Rays in the re-equipment also lead to the formation of wrinkles.
4. From wind and dust
Sunglasses are an excellent barrier from wind, dust and garbage that flies into our eyes. And if you wear contact lenses, it prevents them from drying out, pollution and microbes falling into them. After all, small particles of garbage in gases or lenses is not only uncomfortable, but also not hygienic.
5. From the fatigue of the eyes and headaches
Our pupil is arranged so that it can control the light that reaches the retina in the back of our eye. With dim lighting, our pupils instinctively expand and admit a little more light. And with bright light, the pupil is compressed so that the strong light does not get to us. But with "dazzling" light conditions, pupils are physiologically cannot be sufficient enough. Therefore, the illumination is not reduced before, let's say, a comfortable level. We will pushing, and this is, in fact, an attempt even more to reduce the flow of light falling into the eyes, well, and, as a result, in the brain. After all, it is there that the processing of compression-rallying of pupils, incompressions of light. The constant narrowing of our pupils and their grinding can lead to eye fatigue and headaches. Sunglasses reduce light thread reaching eyes. This increases a comfortable feeling and reduces the painful effects of "side" fatigue.
6. From bad vision
Our eyes need to receive a certain "dose" of light. If they constantly sort out or unait light, it may worsen vision. Let not immediately, and after a few years. Too much light is also bad, as very little. But, an excessive glare, which happens in the summer-spring period, cause something like "fading" of the retina. And this leads to a decrease in visual acuity. High-quality glasses will serve you better protection from these damage. Of course, the usual cheap plastic will not solve this problem. And the original genuine glasses from well-known firms that are famous for their excellent optical clarity will help in preservation of vision.
7. From the picky views of the mods
Glasses are a primary accessory, reflecting your uniqueness. Well-chosen sunglasses can make a highlight to your image. They will be the main focus of your style if there are no other ways to attract attention. If earlier it was believed that hairstyle and women's shoes "make" her image, then in our time it can safely say about glasses.
I am not the smartest guy and therefore the first 28 years of your life did not wear sunglasses at all. Of course, I have shifted in front of the friends of Oakleys Painna in the eighth grade, but in reality I did not see much sense in the glasses. You can just pouch in the sun, and the face without a rim sunlights evenly. So I thought until I began to torment the half-hour headaches every time I saw the camera outbreak. The intolerance of the bright light is the consequence of my carelessness. Now I need to take the ibuprofen pill or drink a couple of strong drinks to be near the flash and not suffer.
Points cool look. At least they should look cool, because their million species to choose from. But if you do not count their coolness, why still need sunglasses? Does the visor of the caps do not protect against bright sunlight? Doesn't you just cover your eyes with your hands when looking towards the sun?
Here Barack Obama takes care of his eyes. Take an example from it.
I decided to apply for an expert opinion to the ophthalmologist Lisa Park, working in the hospital at Columbia University, to find out why we need glasses (if you do not take obvious aspects).
Sunglasses will help you not lose sight. 1-0 in favor of glasses.
Lisa Park explains that there is at least three important occasion to protect the eyes. "The first is the protection of the retina inside the eye. With age, people can develop a macular dystrophy (there is a risk and to lose their eyesight because of this), and the points will protect your eyes from ultraviolet radiation, which leads to it.
The second reason is the protection of the eye lens. Over time, everyone is blocked by vision, we call this process of cataract. Protecting eyes from sunlight, you conduct prevention and this disease. " Glasses are now leading with a score of 2-0.
The protection of the eyes from the Sun is required for everyone, but is doubly important for patients with the history of oncological diseases.
"Skin cancer often begins precisely from the eyeglass - this is a very common case." Of course, sunglasses do not claim the title of cancer medication, but why not progress and in such a way that does not require special efforts.
There are two types of ultraviolet waves: UVA radiation contributes to aging, and UVB may cause cancer cell growth. The park claims that sunglasses must be protected from UVA, and from UVB rays. One of the most reliable models from the point of view of caring about your eyes - polarization glasses. Usually they protect from UVA and from UVB rays, but not always, so you need to approach the choice of lenses and the rim carefully. By the way, they will also save their eyes from glare, which, although not so dangerous, like straight sun rays, but also do not benefit vision. As for the color of the lenses, "he doesn't matter," as the park says. Nick did not have proven that darker lenses protect the eyes better.
5 glasses models that will definite you from ultraviolet
(These are glasses with polarization lenses)
Glasses Tom Ford, 29 350 rub. on Tsum.ru.
Ray-Ban glasses, 14 599 rub. on Tsum.ru.
Glasses Bottega Veneta, 35 650 rub. on Tsum.ru.
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