How To Choose Children's Sunglasses?

The purpose of wearing sunglasses is to protect the eyes from strong light or invisible harmful ultraviolet rays. But if it is not selected properly, it will backfire. So what kind of sunglasses should I choose? When buying sunglasses, you should first choose a firmer one. The color of the lens is preferably gray or smoky. They cause the smallest color distortion and the best color perception, followed by green or brown. Orange, yellow, red, blue or cyan purple, etc., because their color perception is poor, especially affect the recognition of traffic lights, easy to cause trouble, it is best not to choose.

The best protective lens should be made of high-quality optical glass or plastic. Plastic is more impact resistant than glass, but the disadvantage is that the surface is easy to wear. When buying a flat lens, you can inspect the lens for scratches, textures, bubbles, spots and other defects against the light. The inspection method is: hold the mirror half of the arm away, look at objects with vertical and horizontal lines such as doors and windows, and slowly move up and down, left and right. If the lines of the object fluctuate, it indicates that distortion has occurred. But lenses used to correct vision cannot be tested by this method, because some distortions are used to correct vision. In addition, check whether the color and depth of the two lenses are the same. Otherwise it will affect the sense of distance and make the eyes feel tired.

The frame should be made of strong plastic or metal, and the ears, nose and temples should be comfortable when worn. Dark-colored frames are better than light-colored frames, because the brightness produced by light-colored frames may damage eyesight.