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What harm does snow blindness do to human body? How to prevent snow blindness in winter?

Snow in winter is not romantic? But for many people, snow can relax people's mood and bring aesthetic beauty to people, but some people suffer from snow blindness because of snow, so how to prevent snow blindness in winter?

The most direct effect of snow on health is snow blindness (also known as' Snow photoophthalmia '), which usually occurs in sunny days and low temperature days after snow. The main reason for the formation of this disease is that the ultraviolet light in the sunlight is reflected to the cornea of the human eye through the snow, thus causing corneal damage. According to the research, when the 300 nm UVB in the sunlight shines on the snow body, and the sunlight reflected by the UVB shines on the eyes, it may cause snow blindness. Its symptoms are photophobia, tears, itching, tingling, edema, foreign body sensation, etc. The most effective measure to prevent snow blindness is' physical partition ', that is, when walking in the snow, you can wear ultraviolet proof sunglasses, polycarbonate or CR39 lenses, or for the sake of beauty, you can choose frog mirror type full cover gray glasses (under the mapping of snow, the appearance is very cool). Of course, usually pay attention to supplement vitamin A, vitamin B group, vitamin C and vitamin E, which is also conducive to the prevention of snow blindness. If snow blindness has occurred, eye mask and clean gauze can be used to cover the eyes. Do not use the eyes as much as possible. If the symptoms are serious, please see a doctor as soon as possible with the help of your family. The general symptoms of snow blindness can be recovered within 24 hours to 3 days, and severe symptoms can be eliminated within 5 to 7 days.

Walking in snow is easy to fall, which is the disadvantage of snow. Especially for the elderly, walking on the wet snow and icy road, due to the overstaffed wearing, and the degenerative diseases of various organs, the organic diseases increase, the movement is slow, the response is slow, the visual and hearing loss, so it is the most easy to fall, the most easy to cause fracture. Therefore, the elderly in snowy weather, it is best not to go out alone (occasionally short distance out, must wear non slip shoes or sticks), can be accompanied or supported by family members, to watch the snow outside. In addition, the elderly should eat more food rich in protein and vitamin D, and supplement necessary calcium through diet, such as shrimp skin, bean products, nuts, milk, etc., to prevent or delay the occurrence of osteoporosis and reduce the probability of fracture.

In case of snow blindness, what should I do?

There are many ways to treat snow blindness on the Internet, among which some people suggest using self-made saltwater, cold boiled water or fresh milk, fresh human milk and so on. However, these have no scientific basis!

The correct way to deal with it is as follows:

Once you have snow blindness, you should go to the dark place or cover your eyes with an eye mask and apply ice with a cold towel to relieve the symptoms;

Don't force your eyes, try to rest;

Do not hot compress, high temperature will aggravate the pain;

It's best to see a doctor in time, under the guidance of the doctor, the corneal epithelial injury can be cured in one to three days.