When it comes to ultraviolet rays, everyone immediately thinks of sun protection for the skin, but do you know that your eyes also need sun protection?
What is UVA/UVB/UVC?
Ultraviolet rays (UVA/UVB/UVC)
Ultraviolet (UV) is invisible light with short wavelength and high energy, which is one of the reasons why ultraviolet light is harmful to health. According to the different wavelengths of ultraviolet rays, ultraviolet rays are divided into three categories: UVA/UVB/UVC. Most of the ultraviolet rays we are exposed to are UVA and a small amount of UVB. The eye is one of the most sensitive tissues in our body. UVA wavelengths are closer to visible light and can easily pass through the cornea and reach the lens. UVB energy is slightly lower than UVC, but at low doses, it can still cause damage.
Danger to eyes
At present, the ecological environment continues to be poor, and the “hole” in the atmospheric ozone layer is getting bigger and bigger. People are exposed to higher levels of harmful ultraviolet rays than before, and the energy of ultraviolet rays absorbed by eye tissue is also gradually increasing. Absorbing too much ultraviolet rays increases the risk of eye diseases such as photokeratitis, pterygoid and facial cracks, cataracts, and macular degeneration.
☀So, how should you choose sunglasses?☀
1. People with myopia should pay attention to whether there is any discomfort such as dizziness when trying it on. It is recommended that you go to a professional eye hospital for optometry and glasses to choose the lenses that are more suitable for you.
2. When buying sunglasses, be sure to read the label or find out whether the sunglasses can block 99%-100% UVA and UVB.
3. Colored glasses ≠ sunglasses. Many people think that as long as the glasses are colored and can block the sun, they are sunglasses. A good pair of sunglasses must be able to block both strong light and ultraviolet rays. The main function of the color of the lens is to block strong light so that people can see things without glare, but it cannot block ultraviolet rays.
4. Polarized lenses can reduce the glare reflected from surfaces such as water or pavement, which can make driving or water activities safer or more enjoyable, but they do not protect against UV rays! Only polarized lenses that have been treated with UV protection can protect against UV rays. You need to understand clearly before buying.
5. It is not better if the lens color is darker and more protective! They don’t necessarily block more UV rays!
6. The form of sunglasses is not limited to frame type. If you already have myopia glasses, you can choose clip-on sunglasses!
Daily sun protection for eyes is really important. Everyone should enhance their awareness of eye sun protection and develop good outdoor protection habits.
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Post time: Sep-18-2023