u003cbru003eIn summer, the direct sunlight of the sun on the northern hemisphere is much stronger than in winter. Sunlight affects everyone’s vision, especially around noon when the sun is scorching. Everyone wears
sunglasses when walking or cycling. Some people think that the darker the sun
glasses, the more they can protect the eyes. Originally, this idea is wrong. Too dark lenses will seriously affect the visibility, and the eyes are simply damaged due to the difficulty of seeing things. Therefore, dark
sunglasses cannot protect the eyes. YC9707 Women's
Sunglasses C8 Tortoiseshell/Colorful Yellow Experts suggest that the criteria for choosing sunglasses in summer is: the lens should be able to pass through 30% of the visible light, gray and green are the best, so that not only can resist ultraviolet radiation, but also see clearly The degree is the best, and the color changes of external objects are the smallest. Pay attention to the following aspects when buying sunglasses: The small brand of tag is often overlooked. In fact, in addition to telling you the origin of the glasses, the tag also hides a lot of useful information, such as whether the glasses you are buying are sunglasses or light-colored lenses, resin lenses or acrylic. Ray-Ban RB3449 Men's Sunglasses Silver/Lens Colorful Blue 004/55 Lens One of the simplest ways to distinguish the quality of the lens is to shake the glasses back and forth in front of your eyes to see if the object moves with the lens. If it is, it means that the lens is not flat and has unevenness and is a substandard lens. Of course, this is for flat glasses, if it is myopic sunglasses, this trick is not very accurate. Ray-Ban RB4242 unisex glasses frame 6201/13 brown color In addition to leisure and entertainment, if it is really for UV protection, it is best to buy Ray-Ban gray, Ray-Ban green, blue-gray sunglasses with real sun-shading lenses Because these relatively soft colors will not change color when looking at nature, they are especially suitable for car owners, because they will not affect their discrimination of traffic signals such as traffic lights. UV index is an important criterion for sunglasses, which is to filter out ultraviolet rays. At present, the UV index of most sunglasses is between 96% and 98%. Dark lenses are better than light lenses. Generally speaking, a 100% UV index is not possible. If a manufacturer claims that its sunglasses can filter out 100% ultraviolet rays, then his bull can be a bit exaggerated. Related Reading: Sunglasses and Sunglasses
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