Outdoor sports why to wear sports sunglasses?

1, UV protection
Ultraviolet radiation is a part of the solar radiation, but also the most lethal part of the eyes, ultraviolet light should be absorbed by the lens in the eye, if the absorption is not complete will enter the retina, will cause retinal macular disease, while the absorption is not complete will cause lens opacity, cataract and other serious eye diseases. Chronic overexposure to UV light can lead to chronic conjunctivitis, corneal injury, pterygium, glaucoma and retinal damage
Although some people will say that the hat can block the sun, but after all, it is not 360 degrees close to the eyes, the effect is much less than sunglasses. The high-tech anti-UV coating of professional sports sunglasses can filter UV rays 95% to 100%.
2, prevent light exposure
In addition to ultraviolet light, the glare of sunlight can cause severe irritation to the eyes. Studies have shown that the sun's glare outside is up to 25 times stronger than indoor light. The sunglasses can soften and weaken the strong light, and the changes in the outdoor light environment provide comfortable excessive for the eyes and ensure the smooth running. Outdoor transport can improve visual clarity by wearing sunglasses.
When you suddenly enter a relatively dark environment from a long time of strong light, it will produce a short period of dizziness, and even blindness. Especially in the process of trail running, such an instant change is quite scary. If you can not see the surrounding environment, can not judge the landing point in time, it may cause danger in the movement.
In addition to sunlight and ultraviolet rays, light will produce irregular diffuse reflection light through uneven roads, water and other places, commonly known as "glare". The appearance of glare will cause discomfort to the eyes, produce fatigue, and affect the clarity of sight. Strong glare can even block vision, adversely affecting the quality of vision, so that it can affect the enjoyment and safety of your running.
3. Prevent foreign bodies from entering the eyes
Wear sports sunglasses when running, it will be your first line of defense to protect your eyes. It can not only help you block the damage of ultraviolet light and strong light, but also prevent the stimulation of the eyes caused by strong winds during rapid exercise. At the same time, sports sunglasses can also prevent sand, flying insects and branches from causing damage to the eyes
Especially when running in the summer, there are more flying insects in the morning and evening, and the inattentive process of running will get into the eyes, which will make people very uncomfortable. Wearing sunglasses can effectively prevent foreign objects from getting in your eyes. In the process of trail running, due to too much focus on road signs and road conditions, it is often difficult to notice the branches on both sides of the road, which often scratch the eyes.
4, ensure good dynamic vision
In running, the dynamic vision of the human eye to observe the road and the surrounding situation is much lower than at rest. As the speed of running increases, the work of the eyes will become more and more intense.
When the work intensity of the eyes is very large, the reduction of our vision will be relatively obvious, and the scope of the eyes can see clearly will be more and more narrow. Also, your visible vision and field of view get worse with increasing speed. If the eyes and vision protection is not good, it is difficult to cope with various situations, inevitably resulting in accidents.
5, prevent myopia glasses from falling
I believe that many myopic friends, to run have had the painful experience of myopic glasses jumping on the bridge of your nose, a marathon down, the most likely hand action is not to wipe sweat, but "glasses."
How to solve the problem of glasses shaking, many people may have tried: wear non-slip sleeves, glasses, headscarves fixed, but these can only alleviate the temporary, and can not fundamentally solve the problem, and the beauty and comfort of more than a little.