How to choose men's sunglasses? _Sunglasses knowledge_

Nowadays, people pay more and more attention to the maintenance of the body, especially the fragile eyes. In order to prevent it from being attacked by strong ultraviolet rays, many people have begun to wear sunglasses; it can not only solve the concerns of eye damage, but also dress up themselves. But there are many types of sunglasses, how do we choose the sunglasses that suit us? How do we choose men’s sunglasses? Men’s sunglasses should take into account their face shape; 1. Round face: suitable for sunglasses with a thick frame, if you choose a thin and soft frame Sunglasses. The lenses should also be dark, with the visual effect of 'tightening' the face. The shape of the glasses should also be as square as possible, the round shape will make the face more bloated. 2. Oval: Choose a frame that is equal to or wider than the widest part of the face. As long as the overall size of the glasses is balanced with the face, almost any frame can fit. 3. Square: The oval frame can ease your jaw line. Round and wavy frames can provide a good contrast for your face. 4. Rectangle: People with long faces should take round glasses with a wider vertical width to make up for the defects of long faces. The slender face inevitably lacks 'softness' and choose more powerful sunglasses. 5. Inverted triangle: It is suitable to choose a round frame with a thicker frame, a darker color, and a slightly wider horizontal width to adjust the ratio of the upper and lower parts, increase the width of the forehead and eyebrows, and give people a sense of harmony in the vision. 6. Diamond shape: It is advisable to wear light and curved sunglasses. The width of the frame should not exceed the temple and match the contour of the face. 7. Oval shape: almost all styles of glasses look good. You can even try odd-shaped frames to look cool. They are all very stylish. The choice of men’s sunglasses should consider the color of the lens. The color of the lens should be based on the principle that the color of the surrounding environment is not distorted, the edge of the object is clear, and the signal lights of different colors can be effectively identified. The colors of the lenses are gray, brown, and green because the lenses of these colors absorb infrared rays and ultraviolet rays better. Gray lenses can absorb any color spectrum in a balanced manner, and the scene seen after wearing the lenses will only darken without obvious chromatic aberration; brown lenses can filter out a large amount of blue light, which can improve visual contrast and clarity. In severe air pollution or It is particularly effective when worn under foggy conditions. How to choose men's sunglasses, generally speaking, the darker the color of the lens, the stronger the shading effect, but it does not mean that the ability to prevent ultraviolet rays is stronger. The anti-ultraviolet function of sunglasses is also related to the lens material and craftsmanship. The color of the lens is generally medium depth. Wearing too dark lenses can make it difficult to recognize the color of traffic lights. The choice of men’s sunglasses should consider the UV protection of the lens. No matter what color you choose, you must first pay attention to the UV protection sign. UV protection is the primary function of sunglasses. Some sunglasses have '100% UV protection'Anti-ultraviolet' and other signs. If you wear low-quality sunglasses that cannot block ultraviolet rays, more ultraviolet rays enter your eyes than without sunglasses, which is more likely to cause eye damage. Regular eye shops generally have equipment for testing the UV protection capability of sunglasses. How to buy men's sunglasses Don't buy sunglasses on the street, be sure to go to professional stores or large shopping malls, and don't buy fake or shoddy products. The second is to look at what brand, there are dozens to thousands of sunglasses, pure imported sunglasses are very expensive, but fake brands are very cheap. Thirdly, look at the function of the instructions of the sunglasses, whether they have the function of anti-ultraviolet rays, and do not meet the national quality standards. The labels are clearly stated. The fourth few dollars is a plastic film. It cannot be an optical lens. Not only does it fail to protect the eyes, but it also burns the eyes. The temperature around the eyes is high and the eyes become hot after long wearing and long exposure. The fifth lens is not flat, which may cause dizziness, uncomfortable viewing, and distortion when worn.