In the sweltering summer, a trip to the seaside is definitely the best choice. However, the intense sunlight causes trouble for those of us who are nearsighted. At this time, we need a pair of sunglasses, so how should myopic people choose the right sunglasses?
Myopic sunglasses lenses are mainly divided into three types: photochromic myopic sunlenses, tinted myopic sunlenses, and polarized myopic sunlenses. These three types of sunlenses have a common advantage: they are all suitable for all optical frame and sunglasses frame with small curvature, and combine sunglasses and optical frame in one, which is more aesthetically pleasing.
Main features of photochromic myopic sunlenses: Photochromic sunglasses adjust the depth of color according to the intensity of ultraviolet rays, which can meet the needs of wearing indoors and outdoors and effectively prevent ultraviolet rays. However, when used in a car, the ultraviolet index inside the car is usually unstable, so the photochromic effect is not very ideal.
Main features of tinted myopic sunlenses: Tinted resin sunlenses are relatively low in price and economical. However, ordinary tinted myopic resin sunlenses may not have a good ultraviolet protection effect if there is no additional coating.
Main features of polarized myopic sunlenses: The advantage of polarized myopic sunlenses is that they can effectively prevent ultraviolet rays, but their price is relatively high, and they are not suitable for indoor wear. Moreover, the polarized myopic lenses sold on the market currently only have a refractive index of 1.50. For people with high myopia, the sunlenses will be relatively thick.
Factors to consider when purchasing:
Appearance inspection: In addition to ensuring that the sunlenses have no scratches, impurities, bubbles, or streaks, ladies who love beauty must pay attention to the fact that only those with UVA, UVB protection and CE marks on the sunlens surface or tag can play the role of ultraviolet protection.
Myopic sunlens quality: Hold the lens about one foot in front of your eyes, look at a fixed object through the center, and then move it up and down gently. If it is a plain lens, the object should not move. If the object moves with the lens or is distorted, it means the lens is not flat and has unevenness. Such sunglasses should not be bought.
Depth of color: Sunglasses with too light colors have little light-filtering effect; while too dark colors can easily affect vision. In general, brown, gray, and dark green are more appropriate. They have good light-filtering effects, and the scenes seen after wearing the glasses will only become darker without obvious color difference.
Ultraviolet protection function: We cannot distinguish with the naked eye whether a pair of sunglasses has the function of ultraviolet protection. The manufacturer’s explicit commitment to the product is the only reference for consumers to choose sunglasses with protective functions. We can see explicit labels such as “100% UV protection”, “UV400”, “blocks all ultraviolet rays”, “UV protection” on the labels of some products and the front of the eyewear.
Comfort is the key: When choosing a pair of sunglasses, don’t blindly follow the trend. You should also choose the size and curvature of the eyewear according to your face shape. In addition, when trying them on, check if there is a sense of dizziness to avoid accidents such as car accidents caused by dizziness from wearing inferior sunglasses. Also, check if the transparency is high, and it’s better to have a polarized function.
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