Ray-Ban lenses: types and degrees of shading. Sunglass filter category and UV protection levels

Under products general use ordinary Sunglasses, which are an integral part of the summer image of almost any man and any woman. Unlike cosmetic ones, they carry not only a decorative, but also a protective load, protecting the eyes from harmful effects. ultraviolet radiation. The choice of such glasses should be treated with particular care and it is best to ultimately give preference to well-known and reliable brands. Indeed, the composition of cheap low-quality products purchased on the market or in a non-specialized store, as a rule, includes plastic with an extremely low absorbing ability. Due to this, more ultraviolet rays penetrate into the pupil, which instinctively reacts to a lack of illumination by expansion, more ultraviolet rays and blue light- thus, cheap products bring much more harm than benefit. Wearing them too often can lead to the development of cataracts and even cancer.

Increased protection

These sunglasses have heavily tinted lenses with increased UV and blue light protection. In everyday life, they are almost never found. Such models are used, as a rule, while relaxing on the beach, traveling to tropical countries, to the mountains or the Arctic, where, due to the reflective effect of the snow cover, the risk of getting so-called "snow" blindness is extremely high. In some cases, such glasses can be recommended for regular wear to people suffering from serious illnesses retinas.

For many people, sunglasses are an everyday accessory that allows you to emphasize style and create the look you want. However, we should not forget that these optical products perform another important function- Eye protection from UV rays. Consider what determines the degree of blocking of UV radiation in sunglasses.

Currently, there is a wide range of sunglasses on the market for ophthalmic products. The range is replete with popular brands, variety of shapes, designs and colors. However, when buying eyeglass optics, you need to take into account not only the decorative component, but also the protective properties of the lenses. It is important that the corrective agent provides the necessary level of protection of the organs of vision from the harmful effects of ultraviolet rays.

Many are interested in how to choose sunglasses according to the type of protection. We propose to look into this matter.

Should you protect your eyes from UV light?

To understand whether it is worth protecting your eyes from exposure to sunlight, you need to understand their types, the nature of their appearance and the impact on the human organs of vision. Up to 40% of the radiation is categorized as visible and allows us to distinguish colors. About 50% of the sun's rays are infrared. They make you feel warm. And finally, 10% of the sun's rays are ultraviolet radiation, invisible to human eyes. According to the wavelength, it is divided into several subcategories (long-wave - UVA, medium-wave - UVB, and short-wave - UVC).

Types of ultraviolet radiation:

• UVA - is in the range of 400-315 nm. Mostly reaches the surface of the Earth;
• UVB - is in the range of 315-280 nm. Mostly delayed by the atmosphere, but partially reaches the surface of the Earth;
• UVC - is in the range of 280-100 nm. It practically does not reach the Earth's surface (it is delayed by the ozone layer).

Do you need goggles to protect your eyes from UV rays?

Ophthalmologists say that in moderation, ultraviolet is good for the body, as it helps to strengthen the immune system, increase body tone, and even improve mood. Under the influence of UV rays in the eye, metabolism and blood circulation are stimulated, and muscle function improves. In addition, the body produces vitamin D, which strengthens musculoskeletal system, and histamine is produced - a substance that has vasodilating action.

However, with intense exposure, ultraviolet rays have a detrimental effect on the body, including the organs of vision. The lens captures long-wave UV radiation, gradually losing transparency and acquiring a yellowish tint. Experts recommend paying due attention to protecting the eyes from ultraviolet radiation, since clouding of the lens leads to the development of such a serious disease as cataracts. In 50% of cases in the absence timely treatment this eye disease is the cause of blindness. The mucous membrane of the eye and the cornea absorb medium-wavelength ultraviolet radiation (UVB), which can significantly damage their structure under intense exposure. The use of sun protection avoids this problem.

In order to competently approach the purchase, you need to decide which one should be sunglasses protection from UV rays. This factor should be given priority when purchasing these products.

Why you should protect your eyes from intense ultraviolet radiation:

• The lens captures long-wave UV radiation, gradually losing transparency and acquiring a yellowish tint. This can lead to the appearance of cataracts;
• The cornea absorbs medium-wave ultraviolet (UVB) radiation, losing its optical properties.

How much protection should sunglasses have?

Many people do not know how to determine the protection of sunglasses and mistakenly believe that the darker the lenses, the better they block UV rays. However, it is not. Clear lenses can absorb harmful radiation just as well as dark lenses if they are coated with a special coating. Moreover, the pupil under dark lenses dilates, so in the absence of a filter, ultraviolet rays are easily absorbed by the lens.

Products from world famous brands in without fail has a special marking characterizing the degree of protection. Spectacle optics marked "UV400" are considered to be of the highest quality. It filters up to 99% of UVA category ultraviolet with a wavelength of up to 400 nm. However, it should be borne in mind that with the systematic wearing of such glasses in the summer, a “mask” forms on the face, since the skin around the eyes does not tan. Much more common are products labeled UV 380, which filter only 95% of UV rays. Inexpensive products provide blocking from 50% of radiation. All products that capture less than 50% of UV rays do not protect the eyes from their negative effects. Often they are used only for decorative purposes.

Sometimes there is a marking that indicates the degree of protection immediately from UVA rays and UVB: "Blocks at least 80% UVB and 55% UVA". This means that the filter applied to the surface prevents the penetration of up to 80% of UVB rays and up to 55% of UVA rays. Doctors advise choosing products where both indicators are above 50%.

In addition, there is another option for marking glasses:

• cosmetic. Optical products that block less than 50% of UV radiation. These glasses are not recommended for use on sunny days, as they do not protect the eyes from the sun;
• General - universal products with UV filters that block from 50 to 80% of UV rays. Such glasses can be used for everyday eye protection in the city, at mid-latitudes;
• High UV-protection - models with enhanced UV filters that block almost 99% of ultraviolet radiation. They can be used on a bright sunny day in the mountains, near the water, etc.

How to choose sunglasses according to the degree of darkening?

After you have decided on the degree of protection of glasses from UV radiation, you need to choose the level of their light transmission, or darkness. This parameter will determine how brightly you can perceive the world. As a rule, such marking is located on the temple of glasses and consists of two components: the name of the model and the darkness index, for example, “Cat. 3" or "Filter cat. 3".

Classification of sunglasses by darkness:

• Marking (0). This product is almost completely transparent. It transmits from 80 to 100% of visible sunlight. Such glasses are recommended for use by athletes when exercising in the absence of bright light.
• Marking (1,2). This optics has a light transmission from 43 to 80%, as well as from 18 to 43% of the light, respectively. it best option for wearing in low and medium solar radiation.
• Marking (3,4). These glasses should be used in very bright sunlight.

In hot summer period for our latitudes the best choice there will be optical products with 2 and 3 degrees of light transmission. For use on summer mornings, as well as in spring and autumn, models with 1-2 degrees of dimming are suitable. Points with an indicator of 4 are recommended for travelers in extreme conditions, for example, when conquering mountains.

It should be clarified once again that the degree of darkness has nothing to do with protecting the eyes from adverse impact ultraviolet rays. This indicator affects only the brightness of the image perception and the comfort of wearing optical products.

What else can protection glasses have?

Modern manufacturers of sunglasses make sure that their products are as comfortable, practical and durable as possible. Therefore, in addition to the UV filter, additional coatings are often applied to the surface of products.

• Polarizing filter. Fully blocks glare - rays reflected from horizontal surfaces (water, snow-covered field, car hood, etc.);
• Anti-reflective coating. Cuts off some types of sun glare, increasing the comfort of use;
• Mirror finish. As a rule, it is applied to one degree or another on all points. Reflects visible sunlight, providing extra comfort to the eye;
• Abrasion resistant coating. Increases stability spectacle lenses to the appearance mechanical damage(scratches, cracks, etc.);
• Melanin spray. Applied to inside lenses to prevent eye fatigue.
• Gradient coverage. Allows you to increase safety while driving. The upper, darker part of the lens provides good visibility when looking at the road. In turn, the light bottom of the lenses contributes to good review dashboard.

We recommend that you familiarize yourself with a wide selection of glasses and means contact correction on the site . We offer you high quality products from world brands at competitive prices. With us you can easily place an order and receive the goods in the shortest possible time!

The summer sun gives us a beautiful tan, but ultraviolet light can be dangerous to the eyes. Mankind has long come up with a way out: sunglasses that filter UV rays. Now they can be bought even in the nearest market. But is it worth it? What dangers threaten the owners of cheap plastic sunglasses? What to look for when choosing reliable protection for your eyes? What do the mysterious numbers and letters in the marking say? MedAboutMe will tell you all about sunglasses with UV filter.

The sun is the main source of ultraviolet radiation (UV). For the inhabitants of the Earth, three main types of UV rays are important in accordance with their wavelength:

• UVA - long-wave radiation, located in the range of 400-315 nm. Is approximately 95% sunlight. Reaches the earth;
• UVB - medium wave radiation, lying in the range of 315-280 nm. It makes up about 5% of the solar flux. Mostly delayed by the atmosphere, but a small part reaches the earth;
• UVC - short wave UV radiation in the range of 280-100 nm. Almost completely delayed by the ozone layer of the Earth.

The most powerful and dangerous to humans are UVC rays. But because of the short wavelength, they cannot penetrate deep into the skin. The weakest (that is, they can carry the least energy) are UVA rays, but due to their wavelength, they have the maximum penetrating power. They reach right up to the papillary and reticular layers of the dermis, where they activate the processes of melanin formation, that is, getting a tan.

When exposed to the unprotected retina, the sun's rays damage it. As a result prolonged wear poor-quality glasses in bright sunshine is dangerous to health: it provokes the development of cataracts and retinal dystrophy.

Glasses with filters that protect the eyes from both UVA and UVB rays are marked "UV400", which indicates their ability to filter all UV rays with a wavelength of up to 400 nm. By the way, at constant wear such glasses form a “mask” of non-tanned skin around the eyes on the face.

Sometimes there is a label indicating the degree of protection against UVA and UVB rays. For example, "Blocks at least 80% UVB and 55% UVA". This means that the UV filter protects a person from at least 80% of UVB rays and 55% of UVA rays. Doctors recommend choosing glasses where both indicators are above 50%.

Finally, another marking option:

• Cosmetic - Cosmetic UV filters block less than 50% of UV radiation. Such glasses provide little protection from the sun and are not recommended for use on days of maximum solar activity.
• General - universal UV filters protect human eyes from 50 to 80% of the sun's rays, that is, significantly less than half of the dangerous radiation reaches the retina. Glasses with this marking are effective for eye protection in the city, at mid-latitudes.
• High UV-protection - special UV filters that block almost 100% of ultraviolet radiation. Glasses with such lenses are used on a bright sunny day near the water or in the mountains, where water and snow, respectively, increase the danger of sunlight.

Is there 100% UV protection? Glasses with similar inscriptions can be found on the "disintegration" with Chinese consumer goods. No, it doesn't. And such glasses are 100% fake, harmful to health.

The degree of darkness of the lenses (Filter Cat) indicates how much of the visible sunlight reaches the eyes. There are 5 main categories of filters:

• Cat 0 is a lens that is not tinted at all and lets in 100% of sunlight. At the same time, it can 100% protect the eyes from UV rays.
• Cat 1 is a lens that transmits 80% of sunlight. This is a low obscuration filter that can be used in partly cloudy conditions.
• Cat 2 - only 40% of the light passes through this filter. Lenses with a medium-tint filter are used for exposure to not very bright sun.
• Cat 3 - dark filters block most sunlight and let in only 15% of the light. Such glasses are effective for protecting the eyes from the sun in the tropics, by the sea and in the mountains.
• Cat 4 is the most powerful filter, blocking almost 100% of the sun's rays. Such lenses are necessary only for extreme conditions and do not involve wearing them in the city without an emergency. You can't drive a car with these glasses on.

By Russian standards, prescribed in GOST R 51831-2001 "Sunglasses" and GOST R 51854-2001 "Spectacle Sunglasses" also talk about 5 categories of filters according to the degree of light transmission:

• category 0 - transparent filter, transmits 80% of the light flux or more;
• category 1 - slightly colored filter, transmits from 40 to 80% of the light flux;
• category 2 - medium colored filter, 18-43% light output;
• category 3 - dark filter, 8-18% light output;
• category 4 is a very dark filter that transmits 3 to 8% of the light output.

In lenses made of a material that does not protect against UV rays, the protective role is played by a transparent substance applied to the lenses. But by itself, it does not obscure glasses. Therefore, it is important to distinguish between opacity and UV filters. Cheap Chinese plastic glasses can have heavily tinted lenses, almost black, but no UV protection at all. Moreover, experts point out that in such fake glasses, the pupil expands to receive more light - and this increases the area of ​​\u200b\u200bdamage to the eye by UV radiation, which negatively affects health.

Thus, UV filters are needed to protect against the rays of the sun that are harmful to the eyes, and the tint of the lenses makes staying in bright sunlight more comfortable. Photochromic lenses have the ability to change the degree of darkness depending on the light.

Previously, the most popular lenses were made of glass (mineral glass). The alternatives were plastic (organic glass) and a combination of glass and plastic (laminated glass). However, times have changed, new technologies have come.

Among the most popular materials today, the following should be separately mentioned:

• CR-39 (Columbia Resin No. 39) - The original version of this variety of organic glass was first produced back in the 1940s. Today it is one of the most popular monomers in the field of eyeglass lenses. It is softer than glass, so it needs an additional protective coating. In addition, the CR-39 is easily beaten, which is significantly inferior to its competitors;
• polycarbonate (lexan, merlon) - "plastic metal", accidentally created in 1953. It is lightweight and much more durable than glass, meaning it is much safer for the wearer. Polycarbonate has the ability to completely absorb ultraviolet with a wavelength of up to 380 nm, so it practically does not need additional special processing;
• Trivex - was developed in 2000 and modified specifically for optics. It is as impact resistant as polycarbonate; the lightest material currently available in the optical industry; Reliably blocks ultraviolet wavelengths up to 394 nm.

› Ray-Ban lenses: types and degrees of shading

Ray-Ban lenses: types and degrees of shading

If you still think that the choice of color, material and shape is the most important thing that happens when buying sunglasses, then we will have to disappoint you: this is a big mistake.

In fact, to protect your eyes from the sun and reflective surfaces, the degree of tint and the type of lenses are the most important. AT-)

Degrees: everyone get out of the twilight!

• 0 : transparent (80-100% light transmission). These can be called lenses with diopters, designed to be worn in medical purposes. Or "null" image glasses.


• 1 : light (43-80% light transmission). This degree is suitable if you wear glasses in cloudy weather or use them as part of your look.


• 2 : medium (18-43% light transmission). Such lenses are good for driving a car, the most versatile.


• 3 : strong (8-18% light transmission). These goggles are ideal for the summer season when the sun is simply merciless. The classic Ray-Ban lenses G-15 (dark green) and B-15 (dark brown) let in 15% of the light.


• 4 : maximum (3-8% light transmission). The lenses are designed for protection in mountainous snowy terrain. Such glasses can be called specialized, they are not suitable for everyday use (for example, you can’t see anything while driving). Ray-Ban does not have glasses with these lenses.


• 5 : Out of range (less than 3% light transmission). If you're a glacier climber or a welder, this is the one for you. B-) Ray-Ban doesn't have glasses with these lenses.

Special cases among Ray-Ban lenses:

• Lenses with Top Gradient Mirror and Double Gradient Mirror technology blocking from 4% of light;


• Lenses RB-50 and RB-50 Ultra, released in 1987 for the anniversary and transmitting from 5% of the light;


• G-31 lenses designed for arctic/desert/mountain travel with 8% light transmission.

Lens type: mysterious letters

What do these mysterious letters give us?

N: This type can be called classic, because it involves a lens made of glass or plastic with a standard UV filter.

Choosing sunglasses, the main thing is to pay attention not to the cost and design, but to the degree of protection from ultraviolet rays, and of course to the license. Eye health is the dominant factor, image and fashion - then.

How to choose the right sunglasses

Ignore glasses with small narrow lenses. With them, the meaning of protection is generally lost, because. narrow lenses will allow ultraviolet rays to pass around them, although the field of view will be limited. This factor will only increase the load on the eyes, because natural reaction eyes with a darkening of the field of vision - pupil dilation. Nerve receptors that respond to the degree of darkening are located in the center of the retina. As a result, the eye, deceived by the decrease in illumination created only in the center of the field of view, opens the pupil and the ultraviolet flow begins to burn the retina itself without hindrance.

If glasses with lenses normal size, but of low quality, it turns out the same. Dark lenses cause the pupil to expand - the eye does not know that these low-quality lenses darken only the visible spectrum, and all the harmful ultraviolet is passed onto the defenseless retina of the eye and also burns it out.

What is most unfortunate is that outwardly a fake from a quality product can only be distinguished by a specialist, and even then with the help of specialized equipment. And the result of wearing a fake will not appear immediately, and the consequences may be irreversible, up to complete blindness. This is just the example when it is forbidden to save, because. in this case, the stingy (or deceived) pays not twice, but for the rest of his life. Moreover, in most cases, he will not even understand (or not believe) what caused the deterioration of vision.

If, after spending the day in new sunglasses, watery eyes appear, or you notice pain in the eyes in bright light, or even deterioration of vision, then, most likely, the eyes were damaged when attacked by ultraviolet radiation. The most reasonable way out in this situation is to immediately run to the ophthalmologist.

Prolonged exposure to UV radiation can cause sunburn cornea - photokeratitis, which can lead to temporary loss of vision. This phenomenon is observed in skiers or polar explorers, therefore in ophthalmology it is called "snow blindness". Also, photokeratitis is not uncommon among vacationers in equatorial resorts.

Remember:

• The closer you are to the equator or the higher in the mountains, the more aggressive the avalanche of UV rays hits your eyes.
• And one more rule - the closer to large water surfaces, the more powerful the reflected flux of UV radiation. So the more you need quality sunglasses.

So if you yourself do not know how to choose the right sunglasses, then there are two options:

1. Buy only certified goods from a recognized manufacturer, and only from a seller who guarantees the quality of the product. (at the end of the article I will give some links to the sunglasses store)
2. Do not buy sunglasses at all - natural defensive reaction the eye itself will adjust the degree of opening of the diaphragm and automatically set the flow of transmitted light to the optimal safe level.

Now let's talk about quality criteria.

Glass or plastic

If the manufacturer maintains the standards, then they protect both those and those qualitatively. So do not bother with the choice between glass and plastic.

There is an opinion that quality glasses can only be equipped with glass lenses. This is a myth, even such a universally recognized cult company as Ray Ban, in addition to traditional glass, has long been producing models from high-tech organic plastic.

The only difference is the price of such plastic. If cheap options are made of acrylic that transmits UV rays, then expensive ones are made of polycarbonate. This polymer reliably protects the eyes from ultraviolet radiation, does not scratch and is safe for health.

If you are firmly convinced that the material of your sunglasses should certainly be glass, but doubt the words of the seller, then you can check the composition in the only easy way. Just put the lens on your cheek or lips - glass, unlike polymer, will be cold, even in hot weather.

Pros and cons of plastic lenses

• Plastic is safer to use. It is advisable for children to take glasses made of plastic.
• It is easier to apply protective coatings on plastic.
• Plastic is lighter.
• Easily scratched. If scratches or cracks form, stop using the glasses immediately, as this can cause vision problems.
• Possible optical distortion.
• Deformed at high temperatures.

Pros and cons of glass lenses

• Glass lenses initially do not transmit ultraviolet light. Provides acceptable UV protection even without the use of protective coatings.
• Less optical distortion than plastic.
• Glass lenses are scratch resistant.
• The main disadvantage is fragility. Glass sunglasses are not recommended for children and athletes.
• Glass is heavier than plastic.

Quality plastic good alternative. During the production process, special additives are introduced into the composition, and protective layers are applied during the manufacture of lenses. An unpleasant nuance may be the distortion of objects, but this factor must be assessed directly by trying on glasses: straight lines should not change shape.

Sunglasses color

The phrase "sees everything in pink" has nothing to do with glasses. To cheer up, it is not enough to have glasses Pink colour on the contrary, if this shade is close to red, it can adversely affect the psyche.

The color of the lenses of sunglasses affects the natural color rendering of the surrounding world and the choice depends only on personal preferences. Although, of course, it is useful to know how certain shades affect the reaction from the perception of the filtered surrounding world.

Shades of brown, dark gray and dark green are recognized as the most optimal: in the first two, the color rendition corresponds to reality as much as possible, in the third, harmful rays are filtered to the maximum and the eyes are less tired.

Yellow and orange filters block Blue colour, help with worsened weather conditions, when the sun is not bright. In conditions of significantly reduced illumination, these filters shift the reaction of the photoreceiving system of the eye towards amplification and the surrounding space becomes brighter, especially at night. There are even goggles for night driving based on this effect, they just add a layer that dampens the direct light from the headlights.

• Gray and brown - best colors for vision. Maximum natural color rendering.
• Green - maximum filtering of harmful ray ranges.
• Pink - helps reduce eye fatigue.
• Yellow and orange are of little use, overloading the retina unnecessarily and negative impact to the central nervous system.
• Red - impairs coordination of movements, up to loss of orientation in the area.

Additional properties

Several important properties, which should be taken into account when right choice sunglasses. Manufacturers add various effects to products: mirror reflection, uneven darkening, polarization, photochromism. And this is not for style, but for functionality. There is a scientific explanation for everything.

A protective coating with a mirror effect is designed to eliminate various glare from surfaces such as snowy mountains, the sea or wet road surfaces.

Polarized lenses are also able to neutralize glare reflected from surfaces. At the same time, they do not distort the color balance at all, but only cut off the circular light wave, turning it into a flat one.

Gradient lenses, maximally darkened at the top with a gradual fading downwards, are functional when protection is required only from bright sky and direct sunlight. For example, specialized glasses for motorists, recommended for drivers at low sun positions. This option may lead to fatigue eyes, so for everyday wear it is desirable to choose a uniform darkening.

Photochromic lenses smoothly adapt to changes in light intensity. This property is realized in chameleon glasses that darken in the sun, or become transparent when the brightness of the light decreases. They are coated with special substances - photochromic agents. Attention! At high temperatures, photochromic agents are less active than at low temperatures. That is, in the heat, the dimming rate photochromic lenses weakens, and the eyes may not receive protection in time. When choosing photochromic lenses, consider, in addition to the speed of dimming and brightening, also temperature sensitivity. Over time, the light-chemical coating may "get tired", and the darkening will weaken. Therefore, chameleon glasses must be replaced regularly.

Lens marking

When choosing glasses, please Special attention on the “ultraviolet” marking, showing the degree of protection against ultraviolet rays as a percentage.

The inscription "400 nm" refers to the maximum wavelength that sunglasses protect against. If the specified number is less than 400, then part of the rays will pass through the filter.

The manufacturer's label might look like this:

• UV-A - the highest degree of protection,
• UV-B - medium degree.

The first is designed for operation under conditions of strong solar insolation, for example, on the beach. The second is placed on glasses that can be used in everyday life.

In addition to this marking, not letters, but numbers may be indicated indicating the maximum wavelength of ultraviolet light that the glasses are able to filter.

Glasses tagged:

• UV 400 filters up to 99% of ultraviolet,
• UV 380 - 95% UV rays.

1. The first is acceptable in a cloudy sky, when the sun alternately hides behind the clouds.
2. The second is designed for urban conditions, when lighting conditions change during the day. These glasses can be worn indoors.
3. Lenses of the third category are the most common and versatile. Suitable for both beach holiday as well as for motorists.
4. The fourth degree of protection is designed for especially dangerous mountain conditions. Recommended for climbers and skiers. Sold exclusively in specialized sports or tourist stores. Driving a car is strictly prohibited.

Shading and UV protection levels fall into five categories:

• "0" - 80-100% light transmission. Minimum UV protection for all ranges.
• "1" - 43-80% light transmission.
• "2" - 18-43% light transmission.
• "3" - 8-18% light transmission. Recommended for ordinary trips to nature and beach holidays in non-equatorial latitudes.
• "4" - 3-8% light transmission. Very dark filter designed for tropical countries and highlands.

frame

Tips like "how to choose the right frame, correct the shape of the face or choose Fashionable style"We will not consider in this article, I will only note the basic principles.

• Blondes (and blondes) are more suited to the face of gold, silver, pale blue and light green frame colors.
• Fair-haired will look more interesting with copper frames or gold.
• Brunettes and brown-haired women look best in shades of brown, gold, and red frames.

The frame of the glasses should fit snugly, especially to the upper part of the face, but without squeezing the temples and the bridge of the nose. Otherwise, it can provoke fatigue, up to a headache.

Sunglasses protect the skin around the eyes

This is a secondary property, but still - properly selected high-quality sunglasses can protect not only the eyes, but also the sensitive skin around them, which is important as a protecting factor from premature aging skin.

For most master recipe Youth is not a secret: if you don't want to grow old, protect your skin from the sun's rays. Statistics says that the main part of wrinkles appears precisely as a result of exposure to the sun on the skin. And the thin delicate skin near the eyes needs special protection, not to mention the eyes themselves.

Even super expensive quality cosmetics with sun protection factors will not give such protection as high-quality glasses provide (tens of times higher than the sun-reflecting properties of advertised sunscreens).

Sunglass models and manufacturers

Ray Ban is considered to be the universally recognized world leaders, although u other companies that produce fashionable accessories, have impressive collections of sunglasses - Armani, Adidas, Dior, Dolce & Gabbana, Prada. Buying them in our time is not a problem, because proven brands are a guarantee of quality. You just need to take into account the dominance of fakes on Russian market, and even more so in Ukrainian. It is more reliable to order genuine sunglasses in an online store, having personally verified their authenticity, and read customer reviews there.

Where to buy the best sunglasses

According to statistics, among the world's eyewear manufacturers, the most popular models are:

• aviator - Ray Ban (Aviator)
• Wayfarer - Ray Ban (Wayfarer).

Summarizing

• It is advisable to know in advance for what purposes sunglasses are required. If there are eye diseases or vision problems, consult an ophthalmologist first.
• For sports in snowy conditions, it is preferable to purchase sunglasses with polarized lenses.
• With a frequent sharp change in the brightness of the lighting (exiting the building into the sun), it is advisable to buy sun glasses with photochromic lenses.
• Read the label carefully to see what UV rays the glasses protect against and whether they can reduce glare or adapt to the brightness of the light.
• Do not buy sunglasses in the markets and street stalls. Of course, high-quality glasses do not have to be expensive, but health is more important than savings.

Just approach the choice without fanaticism. It has been personally verified that high-quality $10 sunglasses and $350 fashion branded sunglasses protect against UV rays equally. And all the games with pricing are just marketing perversions of sellers, how to sell the same thing at a higher price under the image of a trendy brand. Go through the directories European stores and you will be surprised - there are sunglasses for 800 euros. And what is interesting - the buyers are also on them.

Indeed, the rich have their own quirks.

Or maybe not everything is so simple? Maybe the price of health is really worth such prices?

Hardly ... More like a phobia. If only they had our salaries...

Video

How to choose the right sunglasses