5 unexpected environments with lots of UV rays
Car windows only block 44-96% of UVA rays, so people sitting in the car are still affected and susceptible to eye and skin diseases.
Many people think that UV rays only appear when there is sunlight. However, even when there is no sunlight, UV rays still exist and can lead to eye and skin diseases. Here are five unexpected UV environments that you should pay attention to, according to Top Santé.
Cloudy sky
Clouds cannot block all UV rays, only about 30-70%. Sometimes, clouds can increase the intensity of UV rays due to the mirror effect.
In the car
A 2016 study found that UV-protective car windows only block 44-96% of UVA rays, leaving the rest to penetrate and affect occupants.
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| UV-protective car windows only block 44-96% of UVA rays. (Photo: Activity Avenues). |
Mountainous areas
The intensity of UV rays increases with altitude. At 1,500 meters above sea level, UV rays are 20% stronger.
Even in winter, in snowy mountain areas, UV rays are still dangerous. This environment can even lead to Photokeratitis, also known as solar keratitis.
Beach
Due to reflection, the amount of UV rays in coastal areas increases by 20-30%. Seawater also reflects 10% of UV rays, which can easily damage the skin and eyes.
Urban area
Many people do not pay attention to avoiding the sun in the city center, but this is an area with a lot of ultraviolet rays due to the reflection of white walls and glass walls. Therefore, wherever you are, you need to take measures to protect yourself from ultraviolet rays. The simplest is to use sunscreen.
