Why you need sunglasses

Contrary to popular belief, sunglasses are glasses primarily designed to perform two main functions: to save the eyes from bright light and protect from ultraviolet radiation, and only then a fashionable and stylish accessory.

To the choice sunglasses must be treated with the utmost care and responsibility, 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 the bright sun shines, then you involuntarily close your eyes - this is a natural protective reaction of the eyes so as not to let in ultraviolet light.

And if you wear tinted glasses that do not have filters and do not protect your eyes from the harmful effects of ultraviolet radiation, then the pupils dilate and ultraviolet freely enters the retina, irradiating it along the way.

How to choose quality sunglasses

It sounds trite, but you need to buy high-quality and branded glasses in specialized stores or optics salons - they vouch for the quality of the copy you bought, and the copy itself promises to be reliable. There you can also check the quality of glasses with the help of special devices.

During frequent exposure to the sun with correct and working glasses, the area around the eyes will remain brighter - this means that the lenses of the glasses fulfill all the promises made by the manufacturer and protect the eyes from harmful radiation.

Always look at what is indicated in the passport that comes with branded glasses - there should be a serial number of the model, its name, country of manufacture, care instructions, and also the category of the UV filter is indicated, that is, how well your eyes will be protected from radiation . UV filter is the degree of protection against ultraviolet rays. For full eye protection, it should be at least 70%.

When choosing sunglasses, it is imperative to pay attention to the protective filter category (Сat.), Which is indicated on inside eyeglass temples. 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 - slight shade and it is suitable for protection only on a cloudy day;
• Cat.2 - the average degree of darkness, which is applicable only in conditions of not very bright sun;
• Cat.3 - a fairly dark lens, which is ideal for relaxing at sea, in the mountains and for everyday life;
• Cat.4 - the highest degree of protection, which practically does not transmit light. These are special glasses and it is better not to wear them in everyday life, and not to drive a car.

Most branded glasses come with a case and a microfiber cloth.

Very often, potential buyers and connoisseurs argue which lenses are better: glass or plastic. But ophthalmologists have long been unanimous on this issue - both materials are equally good, modern plastic is in no way inferior to glass in terms of protective functions, but such glasses are much lighter and less traumatic.

When choosing sunglasses, remember one rule, the eyes are most comfortable looking through glasses in shades of gray, green or brown. This minimizes eye fatigue.

Hold the glasses in your hands and check the quality of the selected glasses - all screws and bolts must be firmly fixed, the temples should not be loose or too hard.

Remember that glasses glasses should not distort the real colors of objects.

Especially relevant for drivers:

1. polarized glasses (because they protect against glare and bright direct light);
2. graduated (dark top and light bottom - such glasses do not obstruct the view, but perfectly protect against sun rays).

Fans of relaxing on the beach and in the mountains should pay attention to mirrored glasses - they do not heat up in the sun and perfectly reflect sunlight.

The irony about large glasses is very often inappropriate, because glasses with large glasses are the most correct and reliable - they protect not only the eyes, but also the delicate skin around the eyes from premature aging.

Sunglasses and face shape

When choosing glasses, be guided by your face shape. Experts distinguish 4 forms and now we will tell you which sunglasses are suitable for which face. However, remember that everything is very individual. The following statements apply to both women and men.

Round face

If you are the owner of a round face, then you better look at square frames and avoid round shapes. ​

Oval face

People with an oval face shape can choose any glasses - they are the lucky ones on which all the glasses look good. However, this does not negate the importance of fitting - after all, the glasses still have to "sit down" on the bridge of the nose.

triangular face

People with this face shape can safely buy cat-eye glasses or any round frames.

Square face

Owners of a square face shape should pay attention to glasses with rounded or oval shapes.

We hope that our advice will help you easily choose such a difficult accessory as sunglasses, and discounts from the PromKod.ru website will come in handy, because it is with the help of promotional codes and promotions that you can purchase quality goods at a reasonable price.

Why do you need sunglasses? Of course, many perceive sunglasses primarily as a fashion accessory and a stylish addition to their image. But besides this, no doubt, important mission, sunglasses bring a lot of benefits. First, long-term exposure to ultraviolet radiation causes a variety of eye diseases - from damage to the lens to cancer. Secondly, in the bright sun, our eyes are in constant tension and the muscles of the eyes get tired quickly. Do not forget that small wrinkles appear around the eyes from squinting around the eyes - “crow's feet”, which, unfortunately, cannot be removed later. Options for choosing sunglasses Eye protection from ultraviolet radiation 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 from both. It is best that sunglasses have the inscription: "UV-400", meaning that the lenses protect the eyes from all ultraviolet radiation with a wavelength of less than 400 nm. True, the presence of such an inscription does not always guarantee the eyes adequate protection - but this is already on the conscience of manufacturers and sellers of sunglasses. Many people think that sunglasses with near-clear lenses do not protect the eyes from ultraviolet radiation. However, the clarity or color of the lenses has nothing to do with UV protection of the eyes. In fact, such protection is provided by special additives (films) in the body of the eyeglass lens or on its surface, which are colorless. And the color of the lenses or the degree of their darkening affects the protection of the eyes from too bright light. Protection of the eyes from too bright light According to European standards, according to the degree of protection from light, sunglasses are divided into five groups: Glasses of the 0th group transmit 80-100% of the light (tinted or slightly darkened lenses) - they protect from the sun breaking through the clouds in a cloudy weather. Group 1 - let through 43-80% of the light, designed for the inactive sun. Group 2 - let in 18-43% of the light, suitable for sunny weather. Group 3 - let through 8-18% of the light - for the active summer sun. Group 4 - let through 3-8% of the light (very dark lenses) - designed for relaxing at a seaside or ski resort, where the sun's rays are reflected from the water or snow surface. Due to the high degree of shading, they are categorically not recommended for drivers - it is better for them to use sunglasses of the second or third group. Those who wear contact lenses for vision correction should be aware that there are lenses with UV protection, besides, they cost about the same as regular ones. By purchasing them, you immediately get a number of advantages - you have protection not only from solar ultraviolet radiation, but also from computer. In addition, you can safely buy any sunglasses - no matter how cheap, even if they are on the market, since you will only need them to protect against bright sunlight. Sunglasses lens color It is worth knowing that not all colors of sunglasses lenses are equally pleasing to our eyes, so you need to be careful when choosing glasses with bright and unusual lens colors. For example, it is believed that brown lenses are the most pleasing to the human eye. But doctors do not recommend buying sunglasses with blue lenses for children. Therefore, for a better orientation in the color range of sunglasses lenses and their effect on the eyes, here is a table: Lens color Glasses function Where to use Yellow For sports, fashion accessory For sports or being outdoors in cloudy weather, indoors Light green, purple, pink, blue Fashion accessory For dim sun or indoors Dark green Helps reduce eye fatigue For bright to medium-bright sun Dark gray Provides true color perception For bright to medium-bright sun Brown Provides good visualization For bright to medium-bright sun Specular or with a colored mirror effect Effective against bright sun, significantly reduces the amount of light reaching the eyes For holidays in the mountains, on the beach in strong sun Transparent (“white”) Only as a fashion accessory In low sunlight or in a darkened room Not relevant for everyday life, dangerous for drivers In very bright sun : highlands, desert, sea. Gradation of various colors or one color Apply depending on the color of the lenses and their tint For medium-bright sun, indoors. Sunglasses Lens Material Currently, sunglass lenses are made of either plastic or glass, and there are many more glasses with plastic (polymer) lenses. It used to be that glass lenses were better, but with the development of new technologies, plastic has become much better and is now in no way inferior to glass. But sunglasses with glass (mineral) lenses are considered dangerous because of their fragility, especially if a person leads an active lifestyle - they can break with every fall. If the glasses fall along with their owner, then breaking, they can injure his eyes. That is why buying glasses with glass lenses for children is generally not worth it - in the USA it is even prohibited. In addition, glass lenses fog up faster and more and are much heavier than plastic ones, respectively, such glasses are less comfortable and convenient. Almost the only advantage of glass lenses is that they are harder to scratch. Fashion trends of sunglasses for spring-summer 2008 Form The style of sunglasses fashionable in 2008 is retro. Therefore, pay attention to the large, streamlined frames in the style of the 50s and 60s of the 20th century. They can be either round or rectangular in shape. Volume contrast is also used - if the frame of sunglasses is massive, then the temples should be thin and vice versa. The “aviator” shape remains fashionable, as well as mask glasses - both massive and light. But the sports forms of sunglasses this season are not very relevant. Color In 2008, sunglasses with frames of discreet colors - black, brown, gray - are relevant. In some collections of sunglasses there are shades of lilac or lilac, as well as imitations of animal skins or snakeskin. Design As in previous seasons, appliqués made of rhinestones or mother-of-pearl are used as decorations for frames of sunglasses, and in expensive models - from Swarovski crystal crystals. A characteristic feature of fashionable sunglasses in the spring-summer 2008 are openwork temples, reminiscent of forged patterned lattices. In some models, logo medallions inserted into the temples appeared. How to identify a fake? Of course, on the market for 20 hryvnia you will never buy real Italian or French designer sunglasses, so you don’t even have to look at the corresponding inscriptions on the frames. However, it happens that in stores, and even for a solid price, fakes are sold. A certain sign of the authenticity of sunglasses is the inscription MADE IN ITALY or MADE IN FRANCE. Fakes of well-known brands are most often masked with the inscriptions Italy, France, Design Italy, Italian style, Produce for Europe, USA and others. What do some of the inscriptions on sunglasses mean? The conformity of sunglasses to European standards is indicated by the "CE" mark. The passport, which expensive sunglasses must have, must indicate that the glasses comply with the N 1836 standard. If the sunglasses have the inscription "glare protection" in the passport, this means that they can "extinguish" glare from reflective surfaces - for example, water. How to care for sunglasses? In order for sunglasses to last as long as possible, you need to store and wear them in a special case or bag. You need to wipe the lenses with a soft, better with a special cloth. If the glasses are heavily soiled, wash them with soap, water, shampoo or dishwashing detergent. There are also special sprays for eyeglass lenses.

Health

The human eye is a unique human sense organ, quite vulnerable and does not like the bright sun. Those who like to soak up the sun, sunbathe, it is difficult to do without sunglasses. Eyes are especially affected in summer, when the sun's rays are reflected from asphalt roads, glass, concrete, metal products, and other materials used by people to arrange their lives. Of course, the eyes need to be protected, so a great option for them would be to purchase sunglasses.

What are the benefits of sunglasses?

As the name implies, of course, eye protection from direct sunlight, although many people wear them as just a beautiful accessory. They put on dark glasses, both on a bright sunny day and overcast weather, when walking through supermarkets, when they go to work or meet with a business partner - they just wear them unnecessarily.

Sunglasses are worn when necessary. For example, on the seashore on a sunny day, in the desert or in a place where there is a large amount of snow-white snow and a lot of bright sun. Also, a driver who goes on a long journey must necessarily take dark glasses with him so that an accident does not happen from the reflection of light from the road path. In addition, photophobia may appear - this is the fear of sunlight, when there is some discomfort and pain in the eyes.

According to doctors, dark glasses should be worn when necessary, since nature already has a protective mechanism for the eyes. However, they must be chosen correctly at the time of purchase. Do not wear such glasses on cloudy days, in the evening. The pupils will regularly expand, which often leads to some visual impairment or, even worse, to glaucoma.

Plastic or glass?

When purchasing dark glasses, it is worth considering: plastic or glass? Of course, glass lenses break, leading to serious injury. Therefore, they cannot be chosen by a child, a motorcyclist, a driver. Some researchers believe that glass glasses protect the eyes from the sun's rays quite well, but now there are also good plastic glasses with special protection. They contain special components that provide reliable protection from UVB radiation. This designation can be seen on the glasses, the label. For example, the UV95% label indicates how much UV light is absorbed by the glasses, and the UV400 label indicates that all types of UV radiation are absorbed.

So, high-quality dark glasses, of course, cannot be bought at the market, and have a corresponding price. On branded products, the manufacturer's marking will be on the label itself and on the lenses (or on the temple). Self-adhesives often indicate a fake. Why do you need sunglasses?

A star named the Sun is the source of joy, happiness and life itself. The bright light is our friend. But it can also become our enemy if we do not protect ourselves from the impact of its rays. Ophthalmologist the highest category, specialist of the salon-optics Anna Tretyakova talked about what needs to be done so that the sun does not harm the eyesight.

Why protect your eyes?

It has been proven that it is ultraviolet that most damages the structures of the eye. Prolonged exposure can lead to serious diseases: cancer, retinal dystrophy, cataracts, and so on. Also, in the bright sun, you can get a corneal burn. In the zone of particular risk are the inhabitants of the Kama region, who go on vacation to the south of Russia and to hot countries. There, people who are not accustomed to such a strong exposure to rays can very quickly earn a corneal burn. Just six hours in the sun without glasses is enough.

What are glasses?

No drops, no ointments, no vitamins will become a reliable barrier between your eyes and the bright sun. The best protection is sunglasses. They can be with diopters (if you have poor eyesight) or regular (if it is good or you wear lenses). There are also glasses with photochromic lenses - people call them "chameleons". They are especially useful when the sun is dim, but you still have to squint. Chameleon lenses darken in proportion to the amount of ultraviolet that enters them. This is important, because ultraviolet gets into the eyes even if there are no direct rays.

How to choose the right glasses?

Glasses should be large enough to cover not only the eye, but also the skin around it, and also sit well on the bridge of the nose. It is better to choose models with wider temples. This way you can protect your eyes as much as possible. A good example of such protection is sports glasses. They have a fairly streamlined shape - just enough to block the access of radiation. Small glasses from ultraviolet radiation will not protect.

Why are cheap glasses dangerous?

Glasses are not just an accessory. Therefore, you should not buy them at the first stall or pedestrian crossing that comes across. There you are more likely to buy glasses without any UV protection. Not only will they not bring any benefit, but they can also cause serious harm.

The fact is that in the bright sun our pupil narrows. This is how our body protects itself from getting an excessive dose of ultraviolet radiation on the retina. When we place a dark lens between the eye and the sun, the pupil expands accordingly. More light is already reaching the retina, but there is no protection from it. What consequences this can lead to, you already understood.

It is better to buy glasses in specialized stores and opticians, where they will help you choose a model and advise you on how the glasses should fit. What is especially important: you will definitely buy glasses with the necessary level of protection, since sunglasses are considered medical products and they are licensed.

How to check the quality?

Does this mean that you need to buy only expensive glasses? No, choosing based on price doesn't always work. It happens that sunglasses bought at a sky-high price in an expensive store turn out to be nothing more than a stylish accessory.

First of all, learn to read labels. Glasses that actually protect your eyes from UV rays are labeled "UV400" (sometimes "400 nm" or "100% UV"). You can check whether the glasses really have such a degree of protection in optics salons. There are special devices that measure it. The check will only take a few seconds. Many opticians can also check the polarization of the lenses of your glasses.

Why is polarization necessary?

In addition to 100% UV protection, glasses with polarized lenses block light that reflects off water and surfaces. Simply put, they dampen glare from surrounding objects. This helps you see more clearly.

Where to store glasses?

Any glasses are held with the lenses up to avoid scratches. Sunglasses are best stored in a case. If you leave your polarized glasses in the sun, for example (on the beach or in the car), you can ruin them. Long term exposure high temperatures damage the polarizing layer.

Do kids need sunglasses?

Necessarily. Children are active and cheerful people. They spend more time outdoors than adults. And children's eyes are more sensitive to UV exposure. Therefore, doctors recommend protecting the eyes of children from an early age. Children's glasses are made of hypoallergenic polymer materials. Lenses and frames are light, comfortable and ergonomic. You should not save on children's glasses. Even more so to buy them on street stalls.

Do contact lenses have a UV filter?

Yes. Now many modern contact lenses There is also a minimal UV filter. Usually, the more expensive the lens, the more protection.

By the way, if you go on vacation, it is best to take one-day lenses with you. The fact is that the lenses absorb everything like sponges. If you dive into the sea or pool with them, you won't be able to clean them properly. Solutions for lenses will not help to remove the dirt that has accumulated on it. You can not use lenses at all, but order special glasses for swimming with diopters.