u003cbru003eRadiation includes many kinds, mobile phone radiation, computer radiation, solar radiation, etc. Sunglasses are mainly used to prevent solar radiation and reduce strong light stimulation, especially to prevent ultraviolet radiation from harming the eyes. In order to protect the health of the eyes, you can choose radiation protection Sunglasses. Ray-Ban RB2447-F Men’s Sunglasses 901/4J Black/Colorful Green Film Before buying sunglasses
, you must first recognize these two points. First, not all sunglasses have UV protection. When the eye encounters strong light, the pupil will naturally become smaller, which reduces the ultraviolet energy entering the eye. Once wearing glasses without UV protection, the pupils will be dilated. In addition, this kind of glasses does not have the effect of isolating ultraviolet rays. Eyes are like a wide open door, and letting ultraviolet rays enter, the damage to the eyes can be imagined. The second is that sunglasses can block ultraviolet rays because a special coating is added to the lenses. Inferior sunglasses not only cannot block ultraviolet rays, but also severely reduce the transmittance of the lenses, making the pupils larger, and the ultraviolet rays will be injected in large quantities. Damage to the eyes. In addition, inferior lenses also cause people to have symptoms of visual fatigue such as nausea, forgetfulness, and insomnia. How to choose a good pair of radiation protection sunglasses? The following points can be used as a reference. 1) Check whether a pair of sunglasses has UV protection function. We can’t distinguish it with the naked eye. The manufacturer’s express commitment to the product is the only reference for consumers to purchase sunglasses with protection function. On the front of the product label and glasses, you can see clear signs such as: '100% UV protection2) Check the safety-related logos. Sunglasses with safety-related performance, whose lenses are made of impact-resistant materials such as PC films, are often marked with 'impact resistance\'In line with the highest standards in Europe and America' u200bu200betc. If the product can meet the requirements of the label, consumers with special requirements for safety such as motorcycle riders and drivers are a good choice. Consumers should learn to protect themselves with regard to the promises on product labels. Either keep the label or description or let the merchant indicate it on the invoice. Once a dispute occurs, they should not be passive due to lack of evidence. Ray-Ban RB4222 Men's Sunglasses 622/8G Matte Black/Lens Gray 3) The power of the lens should meet the requirements for plain lenses, and there should be no optical defects that affect vision. A simple method of identification is to place sunglasses in front of your eyes, observe distant targets through the lenses, such as window frames or door frames, and then move the glasses up and down back and forth. The target should not be swayed or wave-shaped. 4) lenses are made of glass and resin, and the best sunglasses should use polarized lenses. It is made of synthetic resin, which is as lightweight and precise as contact lenses, and is composed of seven layers of thin sheets. The outer two layers are super hard wear-resistant layers; the second and sixth layers are anti-shatter strengthened layers; the third and fifth layers are ultraviolet rays. The filter layer, the middle layer is the polarized light filter layer. Polarized lenses can effectively filter out reflected light and harmful ultraviolet rays, and are shatter-resistant and abrasion-resistant. They are the most popular sunglasses. 5) In addition to matching the color of sunglasses according to their skin color, face shape, and wearing, they should also be selected 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 foggy conditions. Related Reading: Sunglasses Polarized Anti-Radiation Glasses
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