How to choose sunglasses

u003cbru003eSunglasses are very popular in summer, but many people don't know how to buy them. They just choose what they like from the appearance. Actually, there is a lot of knowledge about sunglasses! Ray-Ban RB4187-F Unisex Sunglasses 856/13 tortoiseshell frame tea lens sunglasses What are the functions? 1. Blocking the sun: This reason must be the most basic function of sunglasses. Sunglasses are called 'sunglasses' because they are the most fundamental role in protecting the eyes. But it’s not just summer that you need sunglasses. As long as the light is so strong and bright that you feel uncomfortable with your eyes, you need to wear sunglasses to avoid injury. 2. Save time: What should I do if I usually go out but there is no time to dress up? At this time you need a pair of sunglasses. There are many celebrities who go out without makeup and add a pair of sunglasses, but as long as they have the role of sunglasses, they can still maintain their majestic aura. 3. Sports protection: You can use it to isolate interference and stabilize your mood during sprinting, so you can run faster; you can use it to shield UV damage and see more beautiful scenery during mountaineering; you can use it to avoid light when shooting Interference, get a higher score. 4. Professional needs: People who drive cars for a long time especially need a pair of sunglasses. Choosing a pair of sunglasses that suits you can effectively reduce eye fatigue and avoid danger. 5. Matching clothes: No matter what clothes you usually wear, don't forget to choose a pair of sunglasses that suit your outfit today. You can give yourself a lot of points. How to choose sunglasses? 1. Observe the packaging: first observe whether the lenses have scratches, impurities, bubbles, stripes, and check the outer packaging of the sunglasses. Regular sunglasses should be marked with the name, color, diameter, quality level, manufacturer name and trademark. Sunglasses with anti-UVA, UVB and CE marks on the mirror or tag can guarantee a certain amount of UV protection. 2. Observe the mirror: Hold the two corners of the sunglasses against the fluorescent lamp, and let the reflective strip of the mirror roll smoothly. If you find that the fluorescent lamp shadow reflected by the mirror is wavy or twisted, it proves that the lens is not flat. Such a mirror will damage your eyesight. The lens should be flat and the transparency should be high. lenses are made of glass and resin. The best sunglasses should use polarized lenses. 3. Try it on: When buying sunglasses, try to see if you feel dizzy or headache. Nowadays, there are some myopia sunglasses sold on the market, but because the interpupillary distance and other indicators vary from person to person, it is best for consumers not to choose this kind of sunglasses without professional guidance. 4. Whether to prevent ultraviolet rays: 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 damaging the eyes. The color of the lens and whether it is UV-proof are two different things. Even if the lens color is dark, it may not be effective Anti-UV, so be sure to choose a lens with anti-UV function. Usually the UV index of sunglasses is between 96%-98%. 6. According to the occasion: In addition to matching the color of the sunglasses according to your skin color, face shape, and wearing, you should also choose the color of the sunglasses according to the place of entry and exit. Generally speaking, black, brown, and gray filter effects are good; gray lenses can absorb any color spectrum in a balanced manner, and the scene seen after wearing the glasses will only darken without obvious chromatic aberration; brown lenses can filter out a lot Blue light can improve visual contrast and clarity, and is particularly effective when worn under severe air pollution or fog. Ray-Ban RB2447-F Men’s Sunglasses 901/4J Black/Colorful Green Lens Why choose light-colored sunglasses? Wearing glasses that are too dark will make the eyes in a darkroom environment, and the pupils of human eyes will automatically expand in a dark environment. Long-term pupil dilation can easily lead to diseases such as glaucoma; poor-quality sunglasses can also cause more ultraviolet rays to penetrate into the eyes, which can easily cause diseases such as solar keratitis, corneal endothelial damage, and macular discoloration; darker glasses make the eyes able to distinguish colors If it is lowered, it is easy to cause color confusion and cause traffic accidents. Sunglasses should be worn as much as possible when outdoors in summer, but not all situations are suitable. In the shade without sunlight, you can take off your sunglasses and let your eyes rest for a while in natural light. Related Reading: Fashion Sunglasses Women's Sunglasses

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