Watch the Winter Olympics, talk about health, learn about skier glasses and snow blindness

These days, the wonderful Winter Olympic games have officially begun. When you look at skiing, you may notice that the athletes are wearing beautiful glasses. As a result, the friends began to discuss, and many people believed that wearing glasses was to promote sponsors. Others think that wearing glasses is to be cool, just like some stars like to make a bunch of patterns on their bodies, the main purpose is to attract the attention of others. In fact, when skiing, wear glasses to prevent disease. Isn't that a bit unexpected? Ever heard of snow blindness? Let's solve your doubts now.

Snow covers the earth, giving people a pleasant mood, but in this environment, there is also a hidden risk of snow blindness. Snow blindness, also known as solar ophthalmia, or ultraviolet ophthalmia, is an acute light source eye disease, mainly due to the strong sunlight reflected through the snow, through the aggregation of crystals, to the retinal macula, causing burns to the eye tissues, and causing vision loss.

Snow blindness, the main manifestations include both eyes tingling, burning pain, eyelid spasm, feel dry eyes, itchy, or foreign body, conjunctival congestion, edema, photophobia, tearing, but also cause visual deformation, severe, there will be diffuse detachment of corneal tissue, resulting in temporary blindness. Think about it, gliding at high speed, jumping in the air, and suddenly finding yourself unable to see the target, what happens? How frustrating would it be if, after a long period of gliding, you were ready to raise your gun to aim, but you couldn't find the target?

The occurrence of snow blindness is mainly related to the environment. Under strong light, the snow's reflection of light increases by 5 to 6 percent. In such an environment for a long time, a large amount of ultraviolet light will be absorbed by the cornea, which may lead to damage such as electro-optic ophthalmia. Moreover, the surface of the snow is not smooth, and those places with small pits, like the concave surface of a searchlight, will form a stronger reflection of light. Scattered light, constantly irritating the cornea, will cause visual impairment.

Our human eyes need to be often exposed to the natural environment, and the eyes cannot be protected by skin care products or sunscreen like the skin, and can only rely on their own functions to cope with changes in light. The image seen by the eye comes from the reflection of light, and the average light reflectance of the general object is about 10% to 35%. After reflection, the intensity of the sunlight is weakened, so that in a normal environment, the eyes are not harmed. However, snow is made up of ice crystals, like countless small mirrors, and the reflectivity of light can reach 95%. People who stay in the snow for a long time are like looking directly at the sun, and if they are not blocked, their eyes will be damaged by the reflected light from the snow. Therefore, skiers wear glasses to prevent illness, not to play cool.

Long-term engaged in skiing, the eyes are subjected to too much ultraviolet stimulation, if not properly protected, light damage accumulation, will cause protein degeneration of eye tissues, causing chronic damage, leading to cataracts or macular degeneration. For professional athletes, with relevant knowledge and coaches reminding, from a young age, you can learn to properly protect your eyes. However, for ordinary people, they may only care about playing greedily, without preparing glasses, and just sprinkle joy in the snow. If you are skiing without glasses and have snow blindness, you need to pay attention, do not rub your eyes with your hands, you should leave the snow immediately, find a dark place to rest, and seek medical examination. If contact lenses are worn, they should be removed immediately to prevent corneal infection. In addition, it should be noted that after the occurrence of snow blindness, cold compresses can be applied, but the eyes cannot be washed with water or milk.

To prevent snow blindness, the main measure is to choose glasses correctly, ski-specific glasses can be divided into spherical mirrors and cylindrical mirrors, spherical mirrors are more in line with the conditions of the human eye. However, cylindrical mirrors do not distort the image and are less likely to produce a sense of vertigo. The color of ski glasses is designed for different weather conditions, and the basic point is that when the light is strong, the color of the lenses is dark, which can better block the light. When the light is weak, the lens is lighter in color to keep the field of vision clear. For ordinary people, the choice of ski glasses should pay attention to, anti-ultraviolet, anti-fog, windproof, anti-impact, it is best to consult with professionals.

Whoever loves, pass on health to whom.

Your health, my concern. Professionals observe health from a scientific and humanistic perspective, including a series of express reports, details, reminders, doubts, observations, opinions, historical stories, etc., with the content of the original works of the author Wei Hongling and the team. All forms of misappropriation and reproduction without permission will be refused, otherwise they will be prosecuted in accordance with relevant laws.

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