5 unexpected environments with high levels of ultraviolet radiation.
Car windows only block 44-96% of UVA rays, so people inside the car are still affected and are susceptible to eye and skin diseases.
Many people believe that ultraviolet (UV) rays only appear when there is sunlight. However, even without sunlight, UV rays are still present and can lead to eye and skin diseases. Below are five unexpected environments containing UV rays that you should be aware of, according to Top Santé.
Cloudy
Clouds cannot completely block ultraviolet rays, only about 30-70%. Sometimes, clouds even increase the intensity of ultraviolet rays due to the mirror effect.
In the car
A 2016 study indicated that car windows with UV protection only block 44-96% of UVA rays, with the remainder still penetrating and affecting those inside the vehicle.
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| Car windows that offer UV protection only block 44-96% of UVA rays. (Image: Activity Avenues). |
Mountain region
The intensity of ultraviolet radiation increases with altitude. At an altitude of 1,500 meters above sea level, ultraviolet radiation is 20% stronger.
Even in winter, in snowy mountainous regions, ultraviolet rays are still very dangerous. This environment can even lead to photokeratitis, also known as sun-induced keratitis.
Beach
Due to reflection, the amount of ultraviolet radiation increases by 20-30% in coastal areas. Seawater also reflects 10% of ultraviolet rays, making them more susceptible to damage to the skin and eyes.
Urban area
Many people overlook sun protection in the city center, but this is actually an area with high levels of ultraviolet radiation due to the reflection from white walls and glass. Therefore, wherever you are, you need to take measures to protect yourself from UV rays. The simplest is to use sunscreen.
