How to choose sunglasses
Consumers should keep in mind when buying sunglasses two: frames, lenses formed; through a higher degree of clarity. Note that the selection surface of the lens to smooth, no wear marks, bubbles, sunglasses, holding his legs at 45 cm from the front of the eyes fluorescent, reflective mirror flat to rolling, and if there wavy shadow that fluorescent light, twist-like deformation, etc. To prove that the lens is not flat, so the lens can damage eyesight; sure to select the UV, or tag on the mirror to see, there is no state anti-UVA, U-VB of the flag; purchase, should be selected to the regular optical shop Regular manufacturers of sunglasses with UV protection features, see the product if production license number; should be flat on the counter sunglasses, glasses can not be stable if placed, indicating a problem with frames; sunglasses color to light gray, Brown or smoke color is superior, followed by dark brown and black second; red is only used as a sun or snow; drive the best use of polarized light, dark sunglasses, because they can decrease glare. (
