Buy sunglasses correctly and say goodbye to UV rays!

u003cbru003eDifferent groups of people can choose sunglasses according to their different preferences and different uses, but the most fundamental thing is to start from the basic principles of ensuring the safety of the wearer and protecting the eyesight from damage. It should be the basic function of sunglasses to reduce the irritation of strong light, see clearly without distortion, anti-ultraviolet, recognize the color without distortion, and accurately recognize the traffic signal. If the above-mentioned functions are defective, they may not function as sunglasses. In severe cases, they may cause symptoms such as dizziness and swelling of the eyes. Sometimes they may also cause symptoms such as slow reaction, illusion of color discrimination, unequal walking and unequal vision. Cause traffic accidents and so on. Therefore, when choosing sunglasses, one should not only focus on styles and ignore the inherent quality. Recommended reading: Summer is coming, how to choose a suitable sunglasses? Buy sunglasses correctly and say goodbye to UV rays! Consumers must pay attention to the following points when buying sunglasses: 1. Make sure of the purpose of buying sunglasses. At present, there are two main categories of sunglasses sold in the market. One is 'shading mirror'. People usually rely on adjusting their pupils in the sun. The light flux is adjusted by the size, when the light intensity exceeds the adjustment ability of the human eye, it will cause damage to the human eye. Sun-shading mirrors can block sunlight to reduce fatigue caused by eye adjustment or damage caused by strong light stimulation; the second is 'light-colored sunglassesLight-colored sunglasses are favored by young people because of their bright colors, richness, novel styles, and variety. Fashionable women love them even more. For this type of species, if there is no scientific understanding, it will bring adverse effects to users. 2. Learn to understand the product label. A pair of sunglasses that meets my country's current standards does not necessarily have additional protective properties such as UV or impact resistance. These indicators will be evaluated only when there are explicit performance on the product. Marks related to anti-ultraviolet function: Ultraviolet rays refer to solar rays with wavelengths between 200nm and 380nm, including three types: UVA wavelengths are 315nm-380nm, UVB wavelengths are 280nm-315nm, and UVC wavelengths are 200nm-280nm. The ultraviolet rays (290nm～2000nm) that reach the surface of the earth account for about 13%, of which UVA accounts for 97%, UVB accounts for 3%, and UVC is close to zero. The damage of ultraviolet rays to the human eye is mainly determined by the wavelength, radiation time and intensity of the ultraviolet rays, and the strength of the human eye's own defense mechanism. The cornea and lens are the most commonly damaged eye tissues. In order to protect the health of the eyes, you can choose sunglasses with anti-ultraviolet function to eliminate ultraviolet rays below 380nm as much as possible. Labels related to safety performance: This type of sunglasses lenses are made of impact-resistant materials such as PC films. The labels and instructions are often marked with 'impact resistanceAnd so on, if the product can meet the requirements on the label, it is a good choice for consumers who have special requirements for safety performance such as motorcycle riders and drivers. The color of the lens should be in accordance with the purpose of use: the choice of the color of the lens should depend on the place where the activity is required. For different light sources and occasions, the color of the lens will affect the shading effect. To make sunglasses can effectively block the strong summer light, the color of the glasses should have enough depth, but cyclists or motorists should not choose too dark lenses. Finally, I want to remind everyone that although sunglasses are good, you can't wear them all the time! Regardless of the occasion, some people wear sunglasses even at dusk, evening, and when watching movies or TV, regardless of the occasion. This will inevitably increase the burden of eye adjustment, cause eye muscle tension and fatigue, and cause vision loss and vision loss. Objects are blurred, dizziness, dizziness, and inability to see for a long time in severe cases. Related Reading: Sunglasses Color Sunglasses

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