Experts remind: high altitude exposure is easy to "sun" cataracts

Experts remind: high altitude exposure is easy to "sun" cataracts

Experts remind: high altitude exposure is easy to "sun" cataracts Experts remind: high altitude exposure is easy to "sun" cataracts

Correspondent Yi Xiaofeng Science and Technology Daily reporter Li Liyun

In summer, the Qinghai-Tibet Plateau and the Yunnan-Guizhou Plateau have little precipitation, strong solar radiation, and large temperature differences between day and night.
People living in such high-altitude places can easily sunburn their skin and cause invisible irritation to their eyes.
Cataracts
.

In an interview with reporters, Professor Zhou Dan, director of the Department of Ophthalmology, People’s Hospital of Suzhou High-tech Zone, Jiangsu, and Dr.
Dan Zengji, director of the Department of Ophthalmology, Linzhou County People’s Hospital in Lhasa, Tibet, reminded that the prevention of cataracts requires long-term attention, especially in the hot summer.
Pay attention and be vigilant, because human eyes are exposed to ultraviolet radiation almost every day, and too strong ultraviolet radiation is the biggest "black hand" behind the scenes that cause cataracts
.

The results of the study show that an extra hour of exposure a day will increase the probability of developing cataracts in a year by 10%, and the risk of cataracts for outdoor workers is three times that of the average person

High altitude, high incidence of cataract

High altitude, high incidence of cataract

Cataract is a very common blinding eye disease in clinic, and it is also a multifactorial disease
.

All kinds of reasons such as aging, genetics, local nutritional disorders, immune and metabolic abnormalities, as well as trauma, poisoning, radiation, etc.

Dr.
Dan Zengji explained that China’s Qinghai-Tibet Plateau has an average altitude of more than 4000 meters.
Compared with plain areas, the intensity of ultraviolet radiation is extremely high, the oxygen content in the air is thin, the harsh natural environment and the relatively lagging medical conditions make Tibetan areas The incidence of cataract is about 60% higher than that of other regions in China
.

As the most harmful and mutagenic electromagnetic radiation in the solar spectrum, ultraviolet rays are mainly divided into long-wave ultraviolet, medium-wave ultraviolet, short-wave ultraviolet and vacuum ultraviolet according to different wavelengths

The clouds are thick and may not be able to block ultraviolet rays

The clouds are thick and may not be able to block ultraviolet rays

Director Zhou Dan warned that with the gradual destruction of the earth's ozone layer and the drastic changes in global climate, the danger of human exposure to ultraviolet rays is "increasing.
" We must attach great importance to the "window of the soul"
.

At present, the most effective way to reduce the damage to the eyes caused by solar radiation is to avoid direct exposure

On the plateau, people wear broad-brimmed hats when they go outdoors to block the strong sunlight.
However, wide-brimmed hats are difficult to shield from indirect ultraviolet radiation, so about 50% of the ultraviolet rays may still enter the eyes
.

Dr.

Affected by ultraviolet rays, high calorie intake is also one of the causes of cataracts in plateau areas
.

In June of this year, during the "Aid to Tibet" on Eyes Day, Professor Zhou Dan inspected people with eye diseases in Tibet and found that Tibetan residents mainly eat tsampa, ghee and beef and mutton.

To curb cataracts, please refer to the following items

To curb cataracts, please refer to the following items

So, what are the ways to curb the process of cataracts? Take more vitamins, and appropriate zinc and selenium supplements have a good effect
.

Dr.

A survey shows that among people who are sensitive to sun exposure, the incidence of cataracts is 30-40% higher than that of the general population, and the age of onset is also 5-10 years earlier
.

In this regard, Professor Zhou Dan reminded that if you stay outdoors for a long time in summer, you must bring a parasol or sun hat to avoid the ultraviolet, infrared and visible light in the strong light; for personal protection, you may wish to equip with a good sunscreen function.

Director Dan Zengji added that in fact, including the elderly suffering from glaucoma and young children in the growth and development period, it is not suitable for anyone to wear sunglasses for a long time
.
This is because long-term exposure to dim light of the lens can easily increase the burden on the eyes.
Especially for children and adolescents, their vision function is developing.
Wearing colored glasses for a long time will inevitably promote vision disorders and visual fatigue.
, It promotes symptoms such as dizziness and headache
.
Therefore, it is best to choose sunglasses under the guidance of a doctor or optometrist
.

Dr.
Zhou Dan suggested that for middle-aged and elderly people over the age of 40, cataracts should be prevented through health measures such as reasonable vitamin supplementation, smoking cessation and alcohol restriction, calorie intake, drinking more green tea, drinking more water, and reducing salt
.
Among them, Longjing, Maojian, Biluochun, Zhuyeqing and other green teas are rich in tannic acid, tea polyphenols, chlorophyll and other substances, which can help block the oxidation reaction of free radicals in the human lens and are very beneficial to prevent cataracts
.
At the same time, eat more dark green vegetables for three meals a day, such as spinach, rape, celery leaves, water spinach, mustard greens, broccoli, chrysanthemum chrysanthemum, chives, radish, etc.
They contain a lot of vitamin C and lutein.
And zeaxanthin, etc.
, can improve the anti-ultraviolet ability of the eyes, and have a certain eye protection function
.