Which color of myopia sunglasses is the most eye-protective, are you wearing it right?

u003cbru003eUltraviolet rays are an invisible killer. When the eyes are exposed to strong sunlight, the crystals in the eyeballs will harden due to excessive ultraviolet rays, and the damage of ultraviolet rays to human eyes is cumulative, which will gradually cause some eye diseases. Such as cataracts, glaucoma and so on. What is ultraviolet (UV)? Ultraviolet is a kind of light that is invisible to the naked eye. According to its wavelength, it can be divided into UV-A, UV-B, and UV-C. 90%~95% of UV-A reaches the surface. The degree of harmfulness is not as good as UV-B, but after prolonged exposure, it still affects the skin. UV-B is basically absorbed by the ozone layer, and only 5%~10% reaches the surface. It is harmful to the skin and eyes and can cause sunburn. It is called 'harmful ultraviolet rays'. UV-C is absorbed by the atmosphere and the ozone layer and does not reach the surface. Very harmful. What color lens can best protect the eyes? 1. Golden lens, filter 100% ultraviolet rays. Golden lens sunglasses can filter 100% ultraviolet rays, allowing infrared rays and 83% of visible light to penetrate the lens. Its biggest feature is that it can filter most of the blue light that is dazzling in the sun. After the golden lens filters the blue light, the natural scenery can be seen more clearly. Therefore, wearing sunglasses with golden lenses when driving, you can see the passing vehicles more clearly. 2. Green lens, filter 99% of ultraviolet rays. Fashionable green lens can filter infrared light and also filter 99% of ultraviolet rays. However, the green lens will change the color of some scenes, and the effect of blocking light is slightly inferior to that of the gray lens. If you want to be a 'love ambassador3. Gray lens, filtering 98% of ultraviolet rays. Gray lens sunglasses have almost the same amount of filtering for each color of sunlight, and can filter infrared rays and 98% of ultraviolet rays. Wearing gray lens sunglasses, the original color of the scene will not change due to the lens, and it can also block the glare to the maximum extent. The lenses commonly known as 'black super' actually belong to gray lenses. Recommended reading: Which one is better between gray spectacle lenses and yellow spectacle lenses? In hot Malaysia, gray lenses are praised by local experts as the 'most comfortable sunglasses'. When outdoor activities, wear sunglasses with gray lenses, not only to pull the wind, shading, but also to see the beauty of the most original colors. How to judge whether sunglasses are UV-resistant? Method: Look at the labels of sunglasses with UV-protection function. Generally, there are several ways to indicate: Recommended reading: teach you how to identify sunglasses a) Mark 'UV400': This means that the lens has UV cut-off The wavelength is 400nm, that is, the maximum value τmax(λ) of the spectral transmittance at the wavelength (λ) below 400nm is not more than 2%; b) Mark 'UV' and 'UV protection': this indicates the cut-off wavelength of the lens to ultraviolet It is 380nm, that is, the maximum value τmax(λ) of its spectral transmittance at a wavelength (λ) below 380nm is not more than 2%. Related Reading: The Choice of Sunglasses Sunglasses Color

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