What kind of sunglasses lenses are good?

Question 1: Which color is good for sunglasses lenses? Correct selection of sunglasses is beneficial to eye health.

First, buy common sense.

Choose sunglasses according to your own preferences and different uses, but the most fundamental thing is to ensure the safety of the wearer and not damage his eyesight. The basic functions of sunglasses should be to reduce the strong light stimulation, keep the vision clear and undistorted, prevent ultraviolet rays, identify colors undistorted and accurately identify traffic signals. If the above functions are defective, they will not play the role of sunglasses, but will cause dizziness, eye pain and other uncomfortable symptoms. Therefore, when choosing sunglasses, we can't just pay attention to the style and ignore its internal quality.

Consumers must pay attention to the following points when purchasing sunglasses:

1. Define the purpose of buying sunglasses.

There are two kinds of sunglasses on the market at present. One is "shading". People usually adjust the luminous flux by adjusting the pupil size in the sun. When the light intensity exceeds the adjustment ability of human eyes, it will do harm to human eyes. Shading can block the sun, so as to reduce the fatigue caused by excessive eye adjustment or the damage caused by strong light stimulation; The other is "light-colored sunglasses", which is also a popular variety in recent years. It is mainly used for decoration and can also be used when the sun is not strong. Light-colored sunglasses are favored by young people because of their bright colors, rich styles and diversity. For this kind of products, if there is no scientific understanding, it will bring adverse effects to users. For example, wearing glasses of a certain color for a long time can cause eye fatigue. If the wearer mistakenly uses these glasses as sunglasses, not only can they not shade the sun, but they may also damage people's eyes.

When we want to buy sunglasses, we must first make sure whether we buy them for shading or for matching clothes and playing a decorative role. Besides shading, is there any requirement for anti-ultraviolet function? Are there any special requirements for the safety performance of lenses? Only by clarifying these purposes and combining the style with the actual effect of wearing on the face can we buy a suitable pair of sunglasses.

2. Learn to understand product identification

A pair of sunglasses that meet the current standards in China does not necessarily have additional protective properties such as ultraviolet protection or impact resistance. These indicators will only be evaluated when there is obvious performance on the product.

A) identification of anti-ultraviolet function

Ultraviolet refers to the solar rays with the wavelength between 200 nm and 380 nm, including three types: UVA band is 365,438+05 nm to 380 nm, UVB band is 280 nm to 365,438+05 nm, and UVC band is 200 nm to 280 nm. Among the solar rays reaching the earth's surface (290 nm ~ 2000 nm), ultraviolet rays account for about 13%, of which UVA accounts for 97%, UVB accounts for 3%, and UVC is close to zero. The harm of ultraviolet rays to human eyes is mainly determined by the wavelength, irradiation time and intensity of ultraviolet rays and the strength of human self-defense mechanism. Cornea and lens are the most common damaged eye tissues, and solar keratitis, corneal endothelial injury and solar cataract are the most related eye diseases. In order to protect the health of eyes, you can choose sunglasses with anti-ultraviolet function and try to eliminate ultraviolet rays below 380nm. Pay special attention to the anti-ultraviolet function of glass lenses when purchasing. From the statistics of spot checks, it is difficult for glass lenses to fully meet the requirements of ultraviolet protection.

B) identification of safety performance

Sunglasses with safety protection performance are made of impact-resistant materials such as PC sheets, and the labels and instructions are often marked with words such as "impact-resistant", "FDA certification" and "meeting the highest standards in Europe and America". If the product can meet the labeling requirements, it is a good choice for motorcyclists, drivers and other consumers who have special requirements for safety performance.

When consumers buy products, they should require complete packaging and safekeeping, which is the manufacturer's commitment to product performance. Or let the merchant indicate these additional protection functions on the invoice, so that once a dispute occurs, it will not be passive because of insufficient evidence.

C) The color depth of the lens should meet the purpose of use.

The choice of lens color depth depends on where you want to move. For different light sources and occasions, the color of the lens will affect the shading effect. Sunglasses should be dark enough to effectively block strong light in summer, but cyclists or drivers should not choose lenses with too dark color.

Second, identify common sense.

Consumers can simply identify the intrinsic quality of lenses by the following methods:

1, the lens power should meet the requirements of flat lens, and there should be no optical defects that affect vision. A simple identification method, ... >>

Question 2: What is the lens material of sunglasses? Today we will talk about the lens materials of sunglasses. Generally speaking, the lens materials of sunglasses can be divided into three categories ―― glass lens, resin lens and PC lens.

Glass lens is the best optical material, but because ordinary glass lens is easily broken, its safety performance is not high for people who like outdoor sports, so it is basically not used for sunglasses. In addition to ordinary glass lenses, there are high-end reinforced glass polarizing lenses, which are explosion-proof and flower-proof, perfectly protecting against ultraviolet rays and glare, but the price of these sunglasses is not acceptable to ordinary people. At present, resin lenses are widely used in sunglasses. Resin is a kind of chemical substance with phenolic structure, which is characterized by light weight, high temperature resistance, impact resistance and effective blocking of ultraviolet rays. It should be said that this is an excellent lens material for sunglasses, and the polarized lens made of this material will make us see things more clearly. There is also a kind of sunglasses lens called PC lens, which has excellent impact resistance and is not easy to break, and is suitable for making sports sunglasses. It should be said that the performance of PC film is better than that of resin lens, and of course the price is higher. In addition to the above three mainstream sunglasses lens materials, there is also a nylon lens, but it is rarely used now because it can't be made into a polarized lens and can't completely block ultraviolet rays and glare. Finally, there is another kind of sunglasses lens material that has to be mentioned, and that is the ubiquitous plastic. On the surface, you may not feel any difference between this kind of low-priced sunglasses and those formal materials, but from the perspective of function, quality and durability, it will become a nightmare for buyers.

Question 3: What is the material of sunglasses lenses? 1, plastic lens

Uv400 resin lens

This is a material that many sunglasses brands like to use. Lightweight and unbreakable is its most obvious feature. The anti-ultraviolet function of plastic lens without any treatment is obviously better than that of glass lens, and the color treatment of plastic lens is simpler. The disadvantages of plastic lenses are poor wear resistance, easy to scratch, easy to deform when the lens is hit, so care should be taken.

At present, there are mainly three kinds of plastic lenses, namely resin lenses, PC lenses and acrylic lenses.

2. Glass lens

Glass lens

We often come into contact with glass lenses. The most outstanding advantage of glass lens is that its optical performance is very stable, which is the consistent advantage of glass lens, and it is also true for frame glasses. In addition, glass lenses are not easily deformed and will not be affected by the pressure of the frame. The disadvantage of glass lens is that it is easy to break and hurt the eyes. At present, the newly developed reinforced glass lens is much more outstanding than ordinary glass lens, and it can be regarded as a kind of safety lens.

3. Polarizing lens

Polarizing lens

This is a lens for polarized sunglasses, which uses the polarization principle of light to block glare from all directions outside the lens, making the line of sight clearer and safer when driving.

4. Color-changing lenses

Decolorization lens

Compared with the photosensitive lens, the color of the lens will change correspondingly because of the change of light, so that the eyes can adapt to different environments. Under strong light, the color of the color-changing lens will deepen, and when pressed, the color of the lens will automatically become lighter. This kind of lens has been applied to myopia sunglasses, and this kind of color-changing lens is also considered as the most convenient and beautiful myopia sunglasses, which is more popular than clip-on sunglasses.

Question 4: What colors do sunglasses lenses have? Color types and characteristics of sunglasses lenses

1. Brown lens

Dark brown lenses can filter out a lot of blue light, improve visual contrast and clarity, and have better wearing effect in severe air pollution or foggy days.

2. Gray lenses

It can absorb any color spectrum evenly, so the scenery will only darken without obvious color difference, showing a true sense of nature. It belongs to neutral color system. It has a good absorption effect on harmful light and can prevent ultraviolet rays 100%.

3. Green lenses

While absorb light, that green light reaching the eye is increased to the maximum extent, so that it has a cool and comfortable feeling, and is suitable for people with easily tired eyes.

4. Blue-gray lenses

Blue-gray lenses are similar to gray lenses and belong to neutral lenses, but they are darker in color and have higher absorption rate of visible light.

5. Mercury lens

The surface of mercury lens adopts high-density mirror coating. Such lenses absorb and reflect more visible light and are suitable for outdoor sports people.

6. Yellow lenses

Strictly speaking, yellow lenses do not belong to sun lenses, because these lenses hardly reduce visible light, but in foggy days or dusk, yellow lenses can improve contrast and provide more accurate visual images, so they are also called night vision goggles. Some young people wear "sunglasses" with yellow lenses as decoration.

7. Light blue lenses

Light blue and light pink lenses are also more decorative than practical lenses.

The depth of lens color only affects the visible light absorption performance, and has nothing to do with the anti-ultraviolet ability. Because ultraviolet rays are invisible, the ability to resist ultraviolet rays depends on the material of the lens, not the depth of the color. Some resin sheets are colorless and transparent, but they can still resist 100% ultraviolet rays. Some sunglasses are gradient resin lenses, that is, the upper part is deep and the lower part is shallow, which is directly close to colorless. This kind of sunglasses can block the sunlight from the top and front when worn outdoors, and can still be seen indoors or in the car. Light-colored gradient glasses will have a good decorative effect if worn by middle-aged women.

Question 5: What kind of sunglasses are better? Sunglasses lenses are divided into 1, PC 2, glass 3, resin 4, nylon 5, AC 6, polarizer 7 and eccentric lens.

1, PC lens (polycarbonate lens): strong, not easy to break, impact-resistant, special lens material for sports glasses, the price is higher than that of acrylic lens;

2. Glass sheet: the clarity is slightly higher than that of resin, but the first weight is the second fragile (even tempered glass);

3. Resin sheet: resin is a kind of chemical substance with phenolic structure, which has the characteristics of light weight, high temperature resistance and strong impact resistance, and can effectively block ultraviolet rays;

4, nylon sheet: made of nylon, features: high elasticity, excellent optical quality, strong impact resistance, usually used as protective supplies;

5.AC film (acrylic lens): excellent toughness, light weight, high transparency and good fog resistance.

6. Polarizer: Polaroid. Its function is to only accept light in one direction and block light in other directions. It uses the principle of shutters to filter out stray light, so that we can see things more clearly.

Principle of polarizer: In order to filter the glare of the sun on water, land or snow, a special coating in vertical direction is added to the lens, which is called polarizer.

Advantages: it eliminates glare and is the first choice for drivers.

Protect against ultraviolet rays and various harmful rays in the sun, and prevent cataracts.

Increase the contrast color, make the vision clearer, and naturally bring you a cool feeling.

The mirror superhard treatment increases the wear resistance and hardness of polarizer.

Polarized sunglasses lenses can absorb 99% ultraviolet rays.

It has the functions of anti-fatigue and radiation protection.

At the same time, you can also see the hidden graphics in the video.

Its good toughness and impact resistance can protect eyes from injury.

This kind of mirror is especially suitable for outdoor activities, such as fishing, driving, sailing, hunting and skiing.

Selling point: comfortable to wear, the advantage is that at least the color of the object itself is changed, and the scenery is truly and naturally seen, without the feeling of visual distortion and dizziness.

7. Eccentric lens: It is to make its convex surface into a cross surface with non-parallel curvature, so as to make the refractive index of light within the acceptable range of our eyes, make our vision clear and not dizzy, and protect our eyes while pursuing fashion for glasses.

The color depth of sunglasses lenses can be divided into 15%, 34%, 50% and 70%, and 15% can be worn indoors and outdoors. The lens requires the best power, 34% is suitable for ordinary outdoor environment, 50% is suitable for scorching sun and seaside, and 70% is suitable for special purposes such as electric welding. The color depth of the lens only affects the absorption of visible light, and has nothing to do with the anti-ultraviolet ability. The anti-ultraviolet ability is only related to the lens material, and the space lens is the best.

Question 6: What material is better for sunglasses? Sunglasses lenses are divided into 1, PC 2, glass 3, resin 4, nylon 5, AC 6, polarizer 7 and eccentric lens.

1, PC lens (polycarbonate lens): strong, not easy to break, impact-resistant, special lens material for sports glasses, the price is higher than that of acrylic lens;

2. Glass sheet: the clarity is slightly higher than that of resin, but the first weight is the second fragile (even tempered glass);

3. Resin sheet: resin is a kind of chemical substance with phenolic structure, which has the characteristics of light weight, high temperature resistance and strong impact resistance, and can effectively block ultraviolet rays;

4, nylon sheet: made of nylon, features: high elasticity, excellent optical quality, strong impact resistance, usually used as protective supplies;

5.AC film (acrylic lens): excellent toughness, light weight, high transparency and good fog resistance.

6. Polarizer: Polaroid. Its function is to only accept light in one direction and block light in other directions. It uses the principle of shutters to filter out stray light, so that we can see things more clearly.

Principle of polarizer: In order to filter the glare of the sun on water, land or snow, a special coating in vertical direction is added to the lens, which is called polarizer.

Advantages: it eliminates glare and is the first choice for drivers.

Prevent harmful light from ultraviolet rays and sunlight, and prevent cataracts.

Increase the contrast color, make the vision clearer, and naturally bring you a cool feeling.

The mirror superhard treatment increases the wear resistance and hardness of polarizer.

Polarized sunglasses lenses can absorb 99% ultraviolet rays.

It has the functions of anti-fatigue and radiation protection.

At the same time, you can also see the hidden graphics in the video.

Its good toughness and impact resistance can protect eyes from injury.

This kind of mirror is especially suitable for outdoor activities, such as fishing, driving, sailing, hunting and skiing.

Selling point: comfortable to wear, the advantage is that at least the color of the object itself is changed, and the scenery is truly and naturally seen, without the feeling of visual distortion and dizziness.

7. Eccentric lens: It is to make its convex surface into a cross surface with non-parallel curvature, so as to make the refractive index of light within the acceptable range of our eyes, make our vision clear and not dizzy, and protect our eyes while pursuing fashion for glasses.

The color depth of sunglasses lenses can be divided into 15%, 34%, 50% and 70%, and 15% can be worn indoors and outdoors. The lens requires the best power, 34% is suitable for ordinary outdoor environment, 50% is suitable for scorching sun and seaside, and 70% is suitable for special purposes such as electric welding. The color depth of the lens only affects the absorption of visible light, and has nothing to do with the anti-ultraviolet ability. The anti-ultraviolet ability is only related to the lens material, and the space lens is the best.

Question 7: What color lenses of sunglasses are good for eyes? According to experts, good quality lenses should have the following characteristics: no ripples, no flaws, and no fatigue when wearing eyes. The glasses of street stalls and vendors are mostly plastic lenses, which are easier to scratch than glass lenses, so it is better not to use them. In addition, the lenses of some sunglasses have not been polished, and consumers will have blurred vision and deformed objects after wearing them, resulting in visual fatigue. Over time, it will not only affect the vision of the eyes, but also cause diseases such as cataracts.

Consumers had better buy sunglasses in regular and guaranteed optical shops, and pay attention to the product certificate, manufacturer and after-sales service. When choosing sunglasses, the key is whether the lenses are flat or not. The detection method is very simple. Just hold the sunglasses in your hand, put them a foot away, and observe the opposite object through the lens. With the vertical and horizontal movement of glasses, if the object is not distorted, the lens is flat, otherwise it is uneven. Uneven glasses can cause dizziness and uncomfortable symptoms. In addition, consumers are advised to choose gray, brown and green when choosing lenses, because these lenses have good shading effect.

In addition, it is necessary to check whether the width of the two arms of the mirror frame will hinder the lateral vision. Synthetic resin frames with excellent texture usually have a width that does not interfere with the side view, so they can be seen clearly and are comfortable to wear.

Correct selection of sunglasses is beneficial to eye health.

First, buy common sense.

Choose sunglasses according to your own preferences and different uses, but the most fundamental thing is to ensure the safety of the wearer and not damage his eyesight. The basic functions of sunglasses should be to reduce the strong light stimulation, keep the vision clear and undistorted, prevent ultraviolet rays, identify colors undistorted and accurately identify traffic signals. If the above functions are defective, they will not play the role of sunglasses, but will cause dizziness, eye pain and other uncomfortable symptoms. Therefore, when choosing sunglasses, we can't just pay attention to the style and ignore its internal quality.

Consumers must pay attention to the following points when purchasing sunglasses:

1. Define the purpose of buying sunglasses.

There are two kinds of sunglasses on the market at present. One is shading. People usually adjust the luminous flux by adjusting the pupil size in the sun. When the light intensity exceeds the adjustment ability of human eyes, it will do harm to human eyes. Shading can block the sun, so as to reduce the fatigue caused by excessive eye adjustment or the damage caused by strong light stimulation; The other is light-colored sunglasses, which is also a popular variety in recent years. It is mainly used for decoration and can also be used when the sun is not strong. Light-colored sunglasses are favored by young people because of their bright colors, rich styles and diversity. For this kind of products, if there is no scientific understanding, it will bring adverse effects to users. For example, wearing glasses of a certain color for a long time can cause eye fatigue. If the wearer mistakenly uses these glasses as sunglasses, not only can they not shade the sun, but they may also damage people's eyes.

When we want to buy sunglasses, we must first make sure whether we buy them for shading or for matching clothes and playing a decorative role. Besides shading, is there any requirement for anti-ultraviolet function? Are there any special requirements for the safety performance of lenses? Only by clarifying these purposes and combining the style with the actual effect of wearing on the face can we buy a suitable pair of sunglasses.

2. Learn to understand product identification

A pair of sunglasses that meet the current standards in China does not necessarily have additional protective properties such as ultraviolet protection or impact resistance. These indicators will only be evaluated when there is obvious performance on the product.

A) identification of anti-ultraviolet function

Ultraviolet refers to the solar rays with the wavelength between 200 nm and 380 nm, including three types: UVA band is 365,438+05 nm to 380 nm, UVB band is 280 nm to 365,438+05 nm, and UVC band is 200 nm to 280 nm. Among the solar rays reaching the earth's surface (290 nm ~ 2000 nm), ultraviolet rays account for about 13%, of which UVA accounts for 97%, UVB accounts for 3%, and UVC is close to zero. The harm of ultraviolet rays to human eyes is mainly determined by the wavelength, irradiation time and intensity of ultraviolet rays and the strength of human self-defense mechanism. Cornea and lens are the most common damaged eye tissues, and solar keratitis, corneal endothelial injury and solar cataract are the most related eye diseases. In order to protect the health of eyes, you can choose sunglasses with anti-ultraviolet function and try to eliminate ultraviolet rays below 380nm. Pay special attention to the anti-ultraviolet function of glass lenses when purchasing. From the statistics of spot checks, it is difficult for glass lenses to fully meet the requirements of ultraviolet protection.

B) Sunglasses with safety-related signs and safety protection performance, the lenses of which are made of impact-resistant materials, such as PC boards ... >; & gt

Question 8: What are the lenses of sunglasses made of? Answer: Fourth, the lens should be flat and transparent. The material of sunglasses is glass and resin, and the best sunglasses should be polarized lenses. It is made of light and precise synthetic resin like contact lenses, and consists of seven thin layers, the outermost two of which are superhard wear-resistant layers; The second layer and the sixth layer are shatterproof reinforcement layers; The third and fifth layers are ultraviolet filter layers, and the middle layer is polarization filter layer. A: Sunglasses are made of many materials (resin, metal, etc. It is very important to protect your eyes and buy them in a regular optical shop. Good workmanship will not scratch the skin and eyes, and inferior sunglasses will easily hurt the eyes. Expert: From the perspective of human physiology, gray, green and brown are good for human eyes, but too deep and too shallow are not good. Too dark sunglasses are easy to cause traffic accidents because of poor traffic signal recognition ability. A: You'd better wear them when you go swimming in summer. If you are a fishing enthusiast, you can prevent cataracts. It's cheap to buy sunglasses in winter. It's out of season! But when it comes to quality, it's hard to say. It is impossible to see with the naked eye whether it can prevent ultraviolet rays. As for the specific brands, you can go to several optical shops to have a look. You can't buy anything from a roadside stall. It's all plastic. A: These two materials can't be directly called plastics, but they are raw materials for making plastics. The main component of sunglasses is polycarbonate (pc). The PC only determines its maximum transmittance and some basic optical parameters, and the grade is mainly reflected in the layer!

Question 9: Which color is better for sunglasses lenses? The best lens colors for sunglasses are tan, gray and green. Let's take a look at the protective effects of various colors. 1.Tan: Tan lens can absorb purple and cyan in light, and almost absorb 100% of ultraviolet rays and red external lines. Soft colors make eyes less tired. It is an excellent protective lens. 2. Gray system: It can completely absorb infrared rays and most ultraviolet rays without changing the original color of the scene. Mild and natural colors are popular lens choices. 3. Green system: Like gray glasses, it can absorb all solitary infrared rays and 99% ultraviolet rays, and the blue and red in the light can also be blocked, but sometimes it will change the color of the scene after passing through green lenses. However, because green brings cool and comfortable feeling and good eye protection effect, it is an excellent choice for sunglasses lenses. 4. Red system: Compared with the above three kinds of lenses, the red system lens is slightly less effective in blocking ultraviolet rays and red external lines, and has a better blocking effect on some light with shorter wavelength. Pink lenses are soft in color, and for some wearers, the psychological benefits outweigh the substantive effects. 5. Yellow series: Yellow series lenses can absorb 100% of ultraviolet rays and most of blue light. After absorbing blue light, the scenery will be clearer, so we can find that it is very common to wear yellow lenses as filters when hunting and shooting.

Seek adoption

Question 10: What color do you wear sunglasses? It's best to talk about the lenses of sunglasses first. According to the depth * * *, sunglasses are divided into four types: 15%, 34%, 50%, 70% and 15%, which are suitable for indoor and outdoor wear, especially for people with eyes and degrees, and can avoid the trouble of taking them off and putting them on.

34% depth, suitable for general use in the sun.

50% sunglasses can be worn in the hot sun and by the sea.

Sunglasses are 70% for special purposes and are generally used in engineering majors such as electric welding.

The depth of lens color only affects the absorption of visible light, and has nothing to do with the anti-ultraviolet ability. The anti-ultraviolet ability is only related to the lens material.

Then introduce the color of the lens.

Gray: It absorbs any color spectrum evenly, so the scenery will not appear color difference, only darken, showing a true and natural feeling, belonging to a neutral color system.

Brown: it can filter out a lot of blue light, improve visual contrast and clarity, and wear well when air pollution is serious (such as sandstorm) or foggy.

Green: Like gray, it belongs to neutral color system, because it can increase the green light reaching the eyes, so it is cool and comfortable, suitable for people with tired eyes.

Blue-gray: Like gray, it belongs to neutral color system, with dark color and high absorption rate of visible light.

Mercury lens: High-density coating on the lens surface. It can absorb and reflect more visible light and is suitable for outdoor sports people.

Yellow: Strictly speaking, this kind of lens is not sunglasses, because it can hardly reduce visible light, but can improve contrast and provide more accurate visual images, so it is also called "night vision goggles", and of course it can also be used for decoration.

Light colors such as light blue and light pink: decorative is more than practical.

If it is practical to buy sunglasses, it is recommended to wear a polarizer from Baosheng or Weston. If you want to consider the decorative effect of sunglasses, you'd better choose brightly colored lenses. Love today reported 2007-11-1221:40, which has nothing to do with color ~

Is the functionality of the eyes ~

Inferior sunglasses can't see clearly and can't resist ultraviolet rays. It causes pupils to dilate and the lens of the eye absorbs more ultraviolet rays, so you must choose a reputable store to buy it. So what should I pay attention to when buying sunglasses?

First observe whether the lens has scratches, impurities, bubbles and stripes, and check the outer packaging of sunglasses. Regular sunglasses should be marked with product name, color, diameter, quality grade, manufacturer's name and trademark, and lenses or tags should be marked with UVA, UVB and CE signs.

Sunglasses can ensure that certain ultraviolet rays are blocked.

Second, when you buy Taigong Jing, try it on to see if you feel dizzy or have a headache. At present, there are some myopia sunglasses with degrees on the market, but because the pupil distance and other indicators vary from person to person, consumers had better not choose these sunglasses with degrees without professional guidance.

Third, point the two corners of the sunglasses in your hand at the fluorescent lamp and let the reflective strip of the mirror roll gently. If you find that the shadow of the fluorescent lamp reflected by the mirror is wavy and twisted, it proves that the lens is uneven, and such a mirror will damage your vision.

Fourth, the lens should be flat and transparent. The materials of sunglasses are glass and resin, and the best sunglasses should be polarized lenses. It is made of light and precise synthetic resin like contact lenses, and consists of seven thin layers, the outermost two of which are superhard wear-resistant layers; The second layer and the sixth layer are shatterproof reinforcement layers; The third and fifth layers are ultraviolet filter layers, and the middle layer is polarization filter layer. Polarized lenses can effectively filter reflected light and harmful ultraviolet rays, and have the functions of shatterproof and wear resistance, so they are the most popular sunglasses.

Fifth, the color of sunglasses should be matched according to skin color, face shape and wearing, and should also be selected according to the place of entry and exit. Generally speaking, black, brown and gray have good filtering effect; Gray lenses can absorb any color spectrum evenly, and the scenery you see after wearing them will only darken without obvious color difference; Brown lenses can filter out a lot of blue light and improve visual contrast and clarity, especially when the air pollution is serious or foggy.

Sixth, what shades of sunglasses are suitable for us? The simple self-test method is to put on sunglasses in front of the mirror and let yourself see your pupils vaguely. If the color is too light, the filtering effect is too small; If the color is too dark, it will affect the vision and weaken the color sense. Colorful and light-colored sunglasses popular this year should not be used in seaside water activities, snow with strong reflection or strong sunshine. They should be worn with sports sunglasses, most of which are colorful and saturated, and can be absorbed or ... >>