What are the points to note when choosing sunglasses?

u003cbru003eSunglasses, as an important accessory for protective glasses, are now very popular with everyone. There are many types of sunglasses on the market, and many people don't know how to choose. So what are the points for attention when choosing sunglasses? Recommended reading: What styles of sunglasses look good? The editor of YC9708 general-purpose sunglasses will introduce some points for attention when choosing sunglasses 1: First, whether the lens can block ultraviolet rays. Generally, there will be an oval label on the spectacle lens. If there is ANTI-UV on it, it will prove They are sunglasses in the true sense. It is best to choose sunglasses with 100% ANTI-UV lettering. At the same time, there will be a number of 0-4 on the label representing the index of blocking ultraviolet rays. For summer sunglasses, at least choose a product with an index of 3. 2: Lens color The color of the lens should be selected based on the principle that the color of the surrounding environment after wearing it is not distorted, the edge of the object is clear, and the signal lights of different colors can be effectively identified. Brown lenses are more comfortable for myopia eyes, green lenses are better for hyperopia eyes. Gray lenses absorb any spectrum evenly, so the scene will only darken, but there will be no obvious chromatic aberration. It is suitable for everyone to wear. 3: Whether it is polarized sunglasses or not? Polarized sunglasses deal with reflected light. In the environment in which we live, there are three types of light, direct light, reflected light and diffuse light. Diffuse light is not usually perceivable, but it is the most important kind of light that our eyes can see. Since direct light has a fixed light source (such as the sun), as long as a little attention is paid, it will not cause harm to our lives. These common reflectors in life often reflect light suddenly, which will bring a lot of inconvenience to our lives. For example, for a driver who is driving, the front rearview mirror is an uncertain reflected light source. Water on the roadside or smooth flat objects carried by passers-by can become the reflected light source. These reflected lights may cause trouble or even trouble to the driver's driving. It is dangerous. 4: Frame type It is recommended to choose sunglasses with a slightly larger frame and wider temples, so as to block the light reflected from the surroundings. Sunglasses with eyebrows covered by eyebrows are better. Related Reading: Sunglasses and Sunglasses

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