In modern society, computer has become an indispensable tool in people's life and work, but it has also become a "double-edged sword" more and more: it brings convenience and speed to people's life and work, but it also quietly harms people's health, causing people's vision decline, joint injury, radiation injury and head and shoulder pain. According to the survey, 83% of the people who often use computers feel eye fatigue, 63.9% suffer from shoulder pain and low back pain, 56. 1% and 54.4% suffer from headache and loss of appetite, as well as autonomic nervous disorder, depression and arteriosclerosis psychosis.
■ Excessive use of computers can easily lead to "computer disease"
Zhang Xinli, director and chief physician of the special needs clinic of the 302 Hospital of the People's Liberation Army, told reporters that many people who use computers excessively are prone to this kind of "computer disease".
Director Zhang said that if you don't pay attention to using the computer for a long time, your eyes are the most vulnerable, your eyesight is not good, your eyes are dry and jealous. Secondly, skin diseases are caused by static electricity generated by computers. Static electricity will absorb a lot of suspended dust, stimulate facial skin and cause allergic skin rash. At the same time, dealing with the computer keyboard for a long time, typing or moving the mouse repeatedly on the keyboard every day, the wrist joint is long-term, dense, repeated and excessive, and wrist joint injury is gradually formed, which is easy to get wrist joint syndrome, commonly known as "mouse hand, pain and numbness of index finger or middle finger, muscle weakness of thumb, which may lead to hand nerve injury and muscle atrophy". Moreover, women are more likely to get it than men, because women's wrists are smaller than men's, and the median nerve of the wrist is more vulnerable to oppression.
In addition, sitting in front of the computer for a long time, if the sitting posture is incorrect, is prone to neck, shoulder, back pain, computer bow syndrome, computer dizziness and so on. However, computers are more harmful to human beings, such as multiple personality disorders, psychopathy and brain advanced cognitive dysfunction, and can also show some so-called psychosomatic diseases with both physiological and psychological characteristics, such as gastrointestinal dyspepsia, autonomic nervous dysfunction and obesity.
Director Zhang introduced that journalists, editors, network designers, typists and white-collar workers who stay in the company all day and use computers as their main tools belong to the high incidence of computer diseases, mainly because their work cannot be separated from computers. In addition, some women and children, especially teenagers addicted to internet cafes, are also high-risk groups of computer diseases, because their resistance is relatively low, and they are more likely to get computer diseases when facing computers for a long time, which is very unfavorable for their healthy growth.
■ Long-term use of computers requires health protection.
Director Zhang pointed out, "The occurrence of computer diseases is mainly related to people's sitting posture in front of the computer, the way they use it and the length of time they use it. Therefore, for people who use computers for a long time, it is very important to do a good job of protection.
First, sit correctly. When operating the computer, try to keep a natural sitting posture, with your back straight and your neck straight. The shoulders droop naturally, the upper arms cling to the body, and the elbows bend 90 degrees. Operate the keyboard or mouse to keep the wrist as horizontal as possible.
Second, the height of the computer should be appropriate. Install the center of the computer screen at the same height as the operator's chest, and it is best to use a chair with adjustable height. There should be enough space to stretch your feet, your knees naturally bend 90 degrees, and your feet will not leave the ground. Don't cross your feet to avoid affecting blood circulation.
Third, keep a proper distance from the screen. The distance between the eyes and the computer screen should be 40-50 cm, so that the eyes can look down at the screen horizontally or slightly, which can relax the neck muscles and minimize the area of the eyeball exposed to the air.
Fourth, the combination of work and rest. Avoid operating the computer continuously for a long time. You'd better have a rest after using the computer for 30 minutes. You can take a walk outdoors, or look up at the sky, or overlook it, or do 10 to 20 neck stretching and chest expanding exercises.
Five, keep the skin clean. There is a lot of static electricity on the surface of computer screen, and the accumulated dust will be transferred to the exposed skin of face and hands. After a long time, it is easy to cause macula and pigmentation, and even cause skin lesions in severe cases. In order to reduce radiation, the office should be kept ventilated and dry, so that those harmful substances can be discharged as soon as possible. Putting a pot of water or a pot of flowers under the computer desk can also reduce radiation, and washing your face frequently can also prevent your skin from being stimulated by radiation waves.
Sixth, a reasonable diet. Usually eat more carrots, cabbage, bean sprouts, tofu, red dates, oranges, milk, eggs, animal liver, lean meat and other foods, and eat less greasy, sweet and spicy foods to supplement vitamin A and protein in the human body. You can drink more tea at ordinary times. Tea contains active substances such as tea polyphenols, which is beneficial to absorb and resist radioactive substances.
Finally, don't forget to wash your hands after using the computer. There are many bacteria and viruses attached to the keyboard, which can also bring harm to people.