How to choose sunglasses in summer is good for your eyes

When choosing sunglasses, in addition to the requirements for their style, many people often have this idea in terms of color: the darker the sunglasses, the better. But is such an idea really scientific?

According to reports, one of the main functions of sunglasses is to filter out ultraviolet rays, as long as the sunglasses are treated with UV, the UV index can reach between 96% and 98%%, that is to say, even light-colored sunglasses, after UV treatment, will achieve the same anti-ultraviolet effect as dark sunglasses, therefore, the anti-ultraviolet function of sunglasses has nothing to do with its color shade. On the contrary, if you wear dark sunglasses for a long time, your eyes will have difficulty seeing objects and you will get tired easily.

In addition, if you wear dark sunglasses, the quality of the lenses is not very good, and the pupils will absorb more ultraviolet rays after the pupils are dilated, which will cause greater damage to the eyes, which may induce cataracts and other diseases to damage the eyes. Learn how to choose sunglasses that don't hurt your eyes.

How to choose sunglasses without hurting your eyes: pay attention to the following two points:

First, in the choice of color, it is best to choose yellow that filters blue light more thoroughly or gray that has little impact on color and brightness.

Second, it is UV protection, because not all sunglasses can filter ultraviolet rays.

3. You should choose brown, gray or green sunglasses, and then see if it has the function of UV protection.

In sunlight, our eyes need to adjust the size of the pupil to control the amount of light entering the eye. Polarized sunglasses use a similar working principle to blinds to eliminate glare, making the scene softer and less glaring once it enters the eye. Polarized glasses also filter the glare of parallel sunlight on water, ground, or snow.

For friends who often exercise outdoors, the most suitable sunglasses are polarizers. Chromic lenses are also known as "photosensitive lenses". Transition-changing glasses are made with a patented photochromic dye that quickly activates the color-changing when the lenses are directly exposed to the sun's ultraviolet rays, protecting the eyes.

Oak sells. <> when buying sunglasses, the most important thing should not be to pay attention to whether they look good or not. I think the most important thing is to see if the quality is qualified, and the most important thing is to look at the quality of the sunglasses. Judging the quality of sunglasses, for our ordinary consumers, the main thing to pay attention to:

Whether the light transmittance of the lens is good, whether the lens color is uniform, whether the lens has basic ultraviolet resistance (UV400) function, whether the lens is comfortable and painful after wearing (the main performance of inferior sunglasses), lens material (the performance of sunglasses and glass lenses is better than resin);

Exposure to sunlight in babies plays an important role in preventing myopia, but the sun is more intense in spring and summer. When exposed to the sun, we must protect our eyes. For example, having a baby sit in a stroller, putting down a parasol beam, and wearing a sunshade or sunglasses will protect our eyes by blocking direct sunlight.

Observe the lenses for scratches, impurities, bubbles, and streaks, and inspect the outer packaging of the sunglasses. Regular sunglasses should be marked with the product name, color, diameter, quality grade, manufacturer name, and trademark. Sunglasses with UVA, UVB, and CE markings on the mirror or tag ensure that they block a certain amount of UV rays.

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Control the amount of light that enters your eyes.

If you have more fashion mirror belts, you can buy more cheap ones. If you are driving or something, you can buy some polarizers, but many big-name sunglasses are not polarized, they are basically fashion. In addition, it is also good to dig into some niche design models, and polarized sunglasses use a similar working principle to blinds to eliminate glare, so that the scene is softer and less dazzling when it enters the eyes.

Polarized glasses can also filter the sun's glare in parallel directions on water, ground or snow.

It is not easy to break, but it is less hard and prone to scratches. There are also memory nylon lenses are also a very good choice, ultra-light weight, super optical performance, 100% UV protection. The surface of the regular and excellent lens is smooth, and the strength of the UV protection function of sunglasses without ripples and flaws is mainly related to the material, process and other factors of the lens.

Generally speaking, as long as the UV index can reach more than 96%, even light-colored sunglasses have a good UV protection effect, but the dark-colored lenses will have a better light-blocking effect.

It is easy to deform when heated, PC polarization is suitable for outdoor wear, with the same advantages of anti-ultraviolet glare as CR39, the same resin lens PC should be 30% lighter than the disadvantages, PC dispersion is larger, Abbe number is 33, and the clarity is not as good as resin! **Relatively expensive! Why wear polarized sunglasses?

Because polarized sunglasses can better protect the eyes, effectively block ultraviolet rays, and prevent cataracts caused by ultraviolet damage. And polarized sunglasses on rainy days will make the driver see things more clearly.

The human pupil will naturally dilate in low light, but the inferior sunglasses lens does not have the function of anti-ultraviolet rays, and the enlarged pupil will absorb more ultraviolet rays, which is easy to cause cataracts, solar keratitis, corneal endothelial damage and macular degeneration of the eye. Polarized sunglasses, on the other hand, work similarly to blinds to eliminate glare, making the scene softer and less glare-free when it enters the eyes. Polarized glasses can also filter the sun's glare in parallel directions on water, ground or snow.

In the summer, it is very important to choose the right sunglasses for the right clothes, only in this way can you have the effect of shading the sun and no liquid, so that you can become very cool, and there will be no scratches on the dry things, let alone heat stroke.

It is very important that if you choose the right pair of sunglasses, it will make you look very temperamental, and it will also effectively block the sun's rays.

It is very important to lose the silver, if you choose the right one in this case, then the other party will choose to wear it for a long time, after all, in the summer, most people will choose to choose to talk about the sunglasses, which is also a must-have for everyone to travel.

A young, fashionable and sporty man, with a rectangular frame + a metal frame, will definitely make you cool. Round face: You'll need straight or angular frames to weaken your silhouette.

Use dark and subtle lenses to reduce the feeling of obesity; Square face: Wear some rounded, streamlined frames; Triangles: Avoid using large frames and squares, as this will make the face shape wider and narrower at the bottom, and it is best to use thin frames, round frames, and bright colors; Rectangle:

It is best suited for large frames, because the length of the face is greater than the width, which can form a long face image.

The color is mainly dark. The nose shape is also related to wearing sunglasses: a large nose is best balanced by a large frame; A small nose shape naturally requires a small frame, a light-colored high-beam frame to make the nose feel longer.

If you have a particularly long nose, you can use dual-beam lenses to make your nose look shorter. Tall, burly people should wear wide-brimmed, angular glasses; Whereas, thinner people should wear smaller glasses. People with large faces are suitable for sunglasses with large lenses and wide frames, which are chic and generous; People with small faces should choose lightweight polygonal thin-rimmed sunglasses that are smart and aura.

In the selection step, the quality of the lenses is first checked. Remove your sunglasses about 45 cm from your eyes, look at the vertical and horizontal lines around your glasses through a window frame or door frame, and move your glasses up and down. If the straight line is twisted or oscillating, it indicates that the lens is deformed.

Lenses with unevenness, marks, and bubbles are not suitable for purchase because they are uncomfortable with dizziness and other sensations after wearing. Second, pay attention to the color of the lenses. In general, dark gray is better, followed by dark brown and black, and blue and purple are the worst, as these two lenses transmit more ultraviolet light.

Blue, green or brown lenses are generally used in summer; In winter, snow is very reflective, so it is best to use yellow, brown or gray lenses. The stronger the light, the better it is to wear dark sunglasses. It's best to choose a product that clearly states on the label that it has 100% UV protection.

Finally, you should pay attention to the style.

The frames of branded sunglasses are available in metal, various sheets, etc. Frame material: alloy, metal, injection molding, plate (imported from Italy), lens quality has national industry standards, whether it has anti-ultraviolet function, whether it can identify the color, whether the surface is scratched 5

Quality Do not buy sunglasses at street stalls, go to specialty stores or large shopping malls, do not buy counterfeit and shoddy products.

The lens color of sunglasses is preferentially gray-green or gray, and sunglasses produced by regular manufacturers should be selected, and the lenses should be flat. I think sunglasses, which are lighter and more comfortable to wear, are best for girls!

I think all sunglasses are very suitable for girls, the key is to see which shape and shape, if girls are faced with the dilemma of choosing sunglasses, they should choose according to their face shape, if you say that the whiter girls can choose some sunglasses with richer colors, if you say that girls with round faces choose square sunglasses, if you say girls with square faces, choose round sunglasses.

The first point should pay attention to its thickness, in fact, it is a very important point, the second point should pay attention to the color of the entire lens is a very important point, and the third point should be, so its brightness is very important, in fact, it is more suitable for the kind of girls with larger faces, so it is more distinctive.

It's good to buy an Armani.

Choose a mirror with UV protection lenses

ReadyRun's good, you can take a look, it's quite suitable for mm belts.

Ray-Ban's, you can come and visit the store!