Although outdoor sports are a kind of exercise and leisure, the damage to the eyes caused by the outdoor sports environment cannot be ignored. Especially because in sports, whether it is sunlight or wind speed, it is irritating to the eyes, and a suitable pair of outdoor glasses is indispensable. Let's take a look at how to choose outdoor glasses. The lens must have the function of anti-ultraviolet, and the effect of anti-ultraviolet must be strong enough. Some outdoor glasses have a better effect of polarizers, which can filter stray light and eliminate some reflected light, which can make the picture clearer and easier to exercise during exercise. For example, driving, fishing, and climbing snow-capped mountains all require sports glasses with polarized light and UV protection. Because in outdoor sports, especially when riding, the wind speed will greatly stimulate the eyes. If the strong wind cannot be blocked, the eyes will easily feel dry. If this goes on, it is easy to get dry eyes. Therefore, outdoor glasses must have the function of protection and windproof, and must not fall off easily, so as to better protect the eyes. If you are engaged in intense outdoor sports, outdoor glasses must have the characteristics of safety. Both the lens and the frame must have the characteristics of being unbreakable. Therefore, if you are exercising intensely, it is better to choose sports glasses with PC lenses. Choose TR-90 frames that are soft and stretchy. Nose pads for sports glasses must be non-slip. The choice of color, gray lenses are recommended more lenses, can provide particularly good perception. Yellow lenses increase contrast. The yellow-green gradient and purple gold-plated mercury-plated lenses can effectively filter blue light and enhance the contrast between the sky and the ground. Of course, there are other colors. This is the same as the color of sunglasses, and it depends on the actual needs to choose.