'Eight Attentions' for Sunglasses Purchase

u003cbru003eThe temperature stays high and cumbersome accessories and accessories will make men feel burdened. At this time, a pair of beautiful and eye-protecting sunglasses is undoubtedly the best choice for fashionable men to look cool. Although sunglasses have decorative functions, their protective functions are the most important. Because if you can’t moderately cut off ultraviolet rays, it will damage your eyes for a long time, so pay special attention to the following points when purchasing sunglasses: Ray-Ban RB4225 Men’s Sunglasses 646/55 Transparent First, check whether the lenses are scratched, impurities, Bubbles, stripes, check the outer packaging of the sunglasses. Regular sunglasses should be marked with the product name, color, diameter, quality level, manufacturer name and trademark. The mirror or tag has the sunglasses with UVA, UVB and CE symbols to ensure a certain degree of isolation Of ultraviolet rays. Ray-Ban RB3449 Men's Sunglasses Silver/Lens Colorful Blue 004/55 Second. When buying sunglasses, try to see if you feel fainting or headache. Nowadays, there are some prescription sunglasses for myopia on the market. However, because the interpupillary distance and other goals vary from person to person, it is best for consumers not to choose such sunglasses if there is no professional guidance. Third, hold the two corners of the sunglasses against the fluorescent lamp with your hand, and make the reflective strip of the mirror roll steeply. If you find that the fluorescent lamp shadow reflected by the mirror is turbulent or distorted, it proves that the lens is not flat. Such a mirror will damage your eyesight. Fourth, the lens should be flat and the transparency should be high. lenses are made of glass and resin. Polarized lenses should be used for the best sunglasses. It is made of synthetic resin, which is as light and precise as contact lenses, and is composed of 7 layers of thin films. The outer two layers are super hard wear-resistant layers; the second and sixth layers are anti-shatter and strengthened layers; the third and the third The fifth layer is the ultraviolet filter layer, and the middle layer is the polarized filter layer. Polarized lenses can effectively filter out reflected light and harmful ultraviolet rays, and have anti-shatter and anti-wear functions. Ray-Ban RB3532 Men's Sunglasses 001/68 Gold Fifth. In addition to matching the color of the sunglasses according to their skin color, face shape, and wearing, they should also be selected according to the place of entry and exit. Usually dark gray is best, dark brown, brown and black are the next, blue and purple are the worst, because these two lenses will transmit more ultraviolet rays. 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 large amount of blue light, which can improve visual contrast and clarity. In severe air pollution or It is especially good to wear under foggy conditions, and it can block the reflected light from the surface of smooth and bright objects. The wearer can see the slender part clearly, which is the driver’s choice; the dark green lens absorbs heat and brings a cool feeling, but transparent The luminosity and clarity are low, so it is suitable to be worn when in the sun, but not when driving; yellow, orange and light red are not necessary as much as possible. It is best to choose products that are clearly marked with 100% UV protection on the label. Sixth, the color depth of sunglasses lenses is divided into 15%, 34%, 50%, and 70%. 15% of the room can be worn inside and outside; 34% are suitable for normal outdoor environments; 50% are suitable for hot sun and seaside; 70% are for special purposes such as electric welding. How to choose the shade of sunglasses? A simple self-test method is to wear sunglasses in front of the mirror to blur the pupils (also called 'pupils) Is the limit. If the color is too light, the filtering effect is too small; if the color is too dark, it affects vision and weakens the color perception. 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 damaging the eyes. The color of the lens and whether it is UV-resistant are two different things. Even if the color of the lens is dark, it may not be effective in preventing UV. So be sure to choose lenses that are marked with UV protection. Usually the UV index of sunglasses is between 96% and 98%. Eighth, regular eyeglass shops usually have equipment to check the ability of sunglasses to resist ultraviolet rays. Through this inspection, you can know if the glasses in your hand are helpful for your eye health. Related Reading: Sunglasses and Sunglasses Brand
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