The depth of lens color only affects the absorption of visible light and has nothing to do with UV resistance. UV resistance is only related to the lens material.

There are several colors of sunglasses;

Gray: It absorbs any color spectrum evenly, so there will be no color difference when looking at the scenery, it will only become darker, showing a real and natural feeling. Neutral colors.

Brown: It can filter out a large amount of blue light, which can improve visual contrast and clarity. It is effective when worn in severe air pollution (such as sandstorms) or foggy conditions.

Green: Like gray, it is a neutral color. Because it can increase the green light reaching the eyes, it is cool and comfortable, and is suitable for people whose eyes are prone to fatigue.

Blue-gray: It is a neutral color system like gray, with darker color and higher visible light absorption rate.

Mercury lenses: The lens surface is coated with high density. Can absorb and reflect more visible light, suitable for outdoor sports people.

Yellow: Strictly speaking, this type of lens does not belong to sunglasses, because it hardly reduces visible light, but can improve contrast and provide more accurate vision, so it is also called "night vision goggles", of course. Can also be used for decoration.

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

If you want to buy sunglasses based on practicality, we recommend French CEBE polarizers; if you want to consider the decorative effect of sunglasses, it is better to choose colorful lenses.

Inferior quality sunglasses cannot see clearly and cannot protect against ultraviolet rays. The result is that the pupils dilate and the lens of the eye absorbs more ultraviolet rays, so be sure to choose a store with a good reputation. What should you pay attention to when buying sunglasses:

First, observe whether the lenses have scratches, impurities, bubbles, or streaks, and check the outer packaging of the sunglasses. Regular sunglasses should be marked with product name, color, diameter, and quality. Grade, manufacturer name and trademark, sunglasses with anti-UVA, UVB and CE marks on the mirror or hangtag can ensure that a certain amount of ultraviolet rays are blocked.

Secondly, when purchasing sunglasses, try wearing them to see if you feel dizzy or having a headache. There are also some myopia sunglasses on the market with prescriptions marked on them. However, because indicators such as interpupillary distance vary from person to person, consumers are advised not to choose sunglasses with prescriptions without the guidance of professionals.

Third, hold the two corners of the sunglasses against the fluorescent lamp and let the reflective strips on the mirror roll gently. If you find that the shadow of the fluorescent lamp reflected on the mirror appears wavy or twisted, it proves that the lens is uneven. Mirrors can damage vision.

Fourth, the lenses should be flat and have high clarity. Sunglasses are made of glass and resin, and the best sunglasses should use polarized lenses. It is made of the same lightweight and precise synthetic resin as contact lenses. It is composed of seven layers of thin sheets. The outer two layers are super-hard wear-resistant layers; the second and sixth layers are shatterproof reinforced layers; the third and fifth layers are ultraviolet rays. Filter layer, the middle layer is the polarizing filter layer. Polarized lenses can effectively filter out reflected light and harmful ultraviolet rays, and are shatterproof and anti-wear. They are the most popular sunglasses.

Fifth, the color of sunglasses should not only be matched according to your skin color, face shape, and clothing, but also according to the place you enter and exit. Generally speaking, black, brown, and gray have good light filtering effects; gray lenses can absorb any color spectrum evenly, and the scene you see after wearing the glasses will only become darker without obvious chromatic aberration; brown lenses can filter out a large amount of Blue light can improve visual contrast and clarity, and is particularly effective when worn under severe air pollution or foggy conditions.

Sixth, what color shade of sunglasses is suitable for us? A simple self-test method is to put on sunglasses in front of the mirror until you can vaguely see your own pupils. If the color is too light, the filtering effect will be too small; if the color is too dark, it will affect vision and weaken the color perception. The colorful light-colored sunglasses that are popular this year should not be used for water activities at the beach, in strongly reflective snow, or under the sun with very strong sunlight. Instead, you should wear sports sunglasses. Most of them use bright saturated colors that can absorb or Reflects more visible light.

Seventh, in addition to reducing the stimulation of strong light and making the eyes comfortable, the main purpose of wearing sunglasses is to prevent ultraviolet rays from causing damage to the eyes. The color of the lenses and whether they are UV-resistant are two different things. Even if the lenses are dark in color, they will not cause damage to the eyes. It may not be able to effectively protect against UV, so be sure to choose lenses that are labeled with UV protection. Usually the UV index of sunglasses is between 96-98.

Eighth, regular optical stores generally have instruments to test the UV resistance of sunglasses. Through this test, you can know whether the glasses in your hands are helpful to your eye health. What color is best for sunglasses? When it comes to the choice of lens color, from the perspective of light blocking effect, you should try to choose gray and brown sunglasses. Compared with other colors, lenses of this color can effectively maintain the color of the object itself and can filter harmful ultraviolet rays. substance. In addition, some children wear sunglasses indoors and outdoors in order to "play cool." This is not advisable. You can wear sunglasses to protect your eyes outdoors, but you should take them off when you go indoors. Because the indoor light is dark, wearing dark sunglasses will cause long-term eye fatigue, eye muscle tension, and blurred vision.

In addition, when buying sunglasses, distinguish between protective sunglasses and decorative sunglasses. Decorative sunglasses do not protect against ultraviolet rays and cannot protect the eyes from sun damage.