Running Wearing Sunglasses, just to be Cool?

Many professional athletes will wear sports sunglasses to participate in the competition, especially on a very sunny day. Today, let's talk about the function of sports sunglasses.

Functions of sports sunglasses

We know that when the skin is exposed to the sun, it is easy to get sunburnt. Therefore, it is essential to apply sunscreen in the seaside or plateau areas. That is the same for the eyes, which will also be damaged by the sunlight.

Ultraviolet (UV) radiation in sunlight is the most harmful to the human body. Take the eyes, for example, most ultraviolet rays will be absorbed by the cornea. When the eyes are exposed to ultraviolet light for long enough, the radiation will gradually penetrate the cornea, causing damage to the internal structure of the eyes.

Therefore, if you do not pay attention to protecting your eyes, they will gradually develop into two kinds of eye diseases: eyelid blepharoplasty and pterygium, also known as surfer's eyes. Eventually, it will affect vision and must be treated surgically.

If you are running near the water or on the snow, your eyes will be damaged by the UV reflected from the water or snow, causing transient and painful phototoxic keratitis. Therefore, although the ultraviolet radiation is very strong in summer, it does not mean that sunglasses are unnecessary in winter.

In addition to eyeball damage, ultraviolet rays can also cause damage to the eyelids. When the skin is exposed to ultraviolet light for long enough, it will cause skin cancer. Although running has many advantages, the possible disadvantage is that the skin will be worse than that of ordinary people. The composition of the eyelids is similar to that of the skin, so there is also a risk of pathological changes.

In addition to resisting invisible damage such as ultraviolet rays, sunglasses can also resist substantial damage, such as preventing foreign objects from entering the eyes.

Especially when running on roads or dusty dirt roads, even small dust or debris entering the eyes will cause infection. Sometimes small insects enter the eyes.

Moreover, sunglasses act as a windshield. Running in an outdoor environment for a long time makes your eyes dry and itchy. If you don't blink to relieve yourself, it will not only slow down but also make you not concentrate enough and cause danger.

When the sun is very strong, you can't look directly at the sun. The eyes will unconsciously squint, which may be dangerous and more likely to cause accidents when running on the road.

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