2023-05-06 22:00:00
The darker the color of the sunglasses, the better, but it is necessary to pay attention to whether they can prevent ultraviolet rays, and at the same time, the color difference should not be too large, so that the eyes can be more comfortable. (Schematic diagram / newspaper information photo)
Already wearing sunglasses, but the crystals in your eyes are still almost cooked? The reason lies in the lens color. A doctor revealed that a male college student wore blue sunglasses for fishing for a long time, causing the most powerful blue light to gather in his eyes, as if he was cooking crystals, and eventually caused premature cataracts. Just wear sunglasses. In addition to paying attention to whether the glasses can prevent UVA and UVB, you must also choose the right color so that your work will not be in vain.
Most people know that they should protect their skin from sun protection when going out, but when it comes to sun protection for their eyes, they still seem to be stuck in the concept of “wearing sunglasses only when the sun is shining brightly”. Ophthalmologist Chen Yunzhen said that in fact, sunglasses are needed to protect the eyes all year round, so as not to damage the eyes due to the stimulation of ultraviolet rays. Ultraviolet light means that it can filter out ultraviolet light below 400 nanometers.
“Until now, many people still have a myth regarding the shade of sunglasses. They always think that the color is dark enough to resist ultraviolet rays. In fact, the shade of color is just a matter of comfort or habit. Glasses must be marked with UV 400 to represent UV protection.” Chen Yunzhen said. .
As for the lens color, how to choose it? Chen Yunzhen said that gray is the most popular color, mainly because gray lenses can absorb all kinds of color wavelengths evenly without changing the original color of objects. The second most popular is yellowish brown, because when looking at the scene, it presents a warmer tone, and the eyes are more comfortable. will feel more comfortable.
And blue is the least recommended lens color. Chen Yingshan, director of the Ophthalmology Department of the Hsinchu Affiliated Hospital of China Medical University, said that a male college student once sought medical treatment because of sore right eye and dim vision. Later, the test result was premature cataract. Only then did I find out that male college students like sea fishing. Although they know that they need to wear sunglasses to protect their eyes, they choose blue lenses, which causes the most powerful blue light to gather in the fundus of the eyes, causing protein denaturation, and the crystals seem to be cooked, which makes the eyesight look dark. of.
Blue light is also the light with the highest energy in the screen of a mobile phone, and it will directly penetrate into the center of the retina, the deepest part of the eyeball. Chen Yingshan reminded that if the mobile phone is used for a long time, under the burning of strong blue light, the macula will not be able to withstand the damage of oxidative stress, resulting in freedom. The radicals scurry around, causing inflammation of the surrounding tissues, and the inflammatory substances will penetrate into the vitreous body, which may seriously cause bleeding due to lesions.
In addition, there are currently many contact lenses on the market that emphasize UV resistance. Chen Yunzhen reminds that such contact lenses cannot protect the entire eye structure. Don’t think that wearing them can block ultraviolet rays. It is recommended to wear UV 400 sunglasses , and it is best to add another hat with a wider brim, because the sun comes from all directions, and sunglasses cannot completely block the ultraviolet rays. If you have an extra hat, the protective effect will be better.
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