It is actually difficult to give a quantitative or qualitative answer to this question. \x0d\\x0d\The computer is an epoch-making invention. It brings people various conveniences in work, study, and life, but it also brings worries. People are more or less worried about long-term computer work. The impact on physical health, such as whether computer radiation will cause damage to the human body. Young women and pregnant women are even more afraid that it will affect their fertility or be harmful to the fetus. \x0d\\x0d\In fact, computers do generate weak electromagnetic fields when they are working, but it has not been determined whether long-term exposure will cause cancer or be harmful to the human body. \x0d\\x0d\Some scholars believe that this electromagnetic field may cause cancer. The electromagnetic field caused by computers is scattering. In addition to his own computer, a computer operator will also be affected by other computers around him. \x0d\\x0d\According to a US research report, if a pregnant woman works in front of the computer for more than 20 hours a week, her chance of miscarriage in the first three months is twice that of other people. Therefore, pregnant women should avoid going near computers during pregnancy. In addition, the electromagnetic field of a color computer is 3-4 times that of a black and white computer. So, how harmful can computers be to the human body? \x0d\\x0d\ Domestic and foreign news media have repeatedly reported that computer screens have caused miscarriages, teratomas, facial rashes, cataracts and photosensitive epilepsy among staff. However, epidemiological statistical analysis cannot confirm this conclusion. The world This view is shared by the WHO expert panel. \x0d\\x0d\At the same time, relevant monitoring results also show that X-rays, ultraviolet rays, infrared rays, ultra-low frequencies, electrostatic fields and acoustic radiation generated by computers or TV screens are all within the allowable range. However, it is worth noting that computer monitors cause visual fatigue. The constantly changing and scrolling characters on the computer screen can irritate the eyes and cause certain damage to the eyes. In addition, the imbalance of positive and negative ions in the indoor environment where computers are placed can also cause autonomic nervous system disorders, depression, etc. in users. Experts point out that a reasonable diet can help prevent computer operators from suffering from "computer disease". The main thing is to eat a good breakfast to ensure that there are sufficient nutrients and calories to maintain strong energy; for lunch, you should eat more foods high in protein; for dinner, you should eat a lighter meal, eat more foods high in fiber, and consciously choose more protective foods. Food for the eyes to prevent myopia or other eye diseases. \x0d\1. How to prevent harm to human health caused by computers\x0d\ While computers bring high-tech enjoyment to human beings, the harm they bring to operators has also gradually attracted people's attention. People who have been engaged in computer operations for a long time should have a sense of self-care. To prevent computer sickness in daily work, you should pay attention to the following points:\x0d\Suitable working environment. Indoor lighting should be moderate, not too bright or too dark, and avoid light shining directly on the screen to avoid interfering light. The screen should not be too bright, and the color should be green. Air-conditioned rooms should undergo regular indoor air disinfection to control pollution. At the same time, open doors and windows frequently or use a ventilator to change indoor air. \x0d\Correct sitting posture. Choose a height-adjustable seat with full back support and a comfortable sitting position with your knees bent at approximately 90 degrees. The center of the computer screen should be at the same level as the operator's chest. The distance between the eyes and the screen should be 40 cm to 50 cm. The body should not be too close to the table, and the elbows should be kept naturally bent. During the operation, you should always close your eyes and rest for a while to regulate eye fatigue. \x0d\Don't hit the keyboard too hard, and try to relax your muscles. People with wrist diseases or tenosynovitis should move their wrists and finger joints frequently, and try not to support their wrists on the edge of the table. People with frozen shoulder should move their shoulder joints frequently to avoid prolonged inactivity, which may cause adhesion of muscles and tendons. \x0d\Improve work efficiency and minimize the time you spend in front of the screen. Especially don't indulge in fast-paced, colorful video games. There are clear regulations abroad that require computer operators to work continuously for one hour and take a break of 10 to 15 minutes. When taking a break, you should stand up and move your hands and feet. You can also go outside to relax or do radio exercises. \x0d\ Wash your face and hands frequently.
There is a large amount of static charge on the surface of the computer screen, which easily collects dust. Exposed areas such as the operator's face and hands are easily contaminated by these pollutants. If you don't pay attention to regular cleaning, rashes may appear on your face, and in severe cases, it can cause skin pigmentation. \x0d\Computer operators should eat more foods rich in vitamin A. Such as carrots, bean sprouts, red dates, animal liver, lean meat, etc. to supplement the lack of vitamin A in the body. You can also drink more green tea, because green tea contains a variety of phenolic substances that can fight against some harmful substances produced by computers. \x0d\\x0d\2. If you often use the computer and want to stay healthy, you have to pay attention to: \x0d\ The time you use the computer should be moderate and not too long. Try to control the continuous operation time to 3 to 4 hours, take a quarter-hour break every 45 minutes, and do some eye exercises to relax your eyes. You also need to relax your head, neck and back, get up from your seat and walk around to allow blood to circulate fully and take away fatigue. Avoid using the computer tiredly and playing protracted games. \x0d\The posture when operating the computer must be correct. Sit upright, do not lean on one side of the seat, keep your waist as close to the back of the chair as possible, let your arms droop naturally, and keep your shoulders relaxed. \x0d\Monitor placement should be reasonable. The monitor should not be placed too high or too low. Generally, the upper end of the monitor should be roughly parallel to eye level. Give your eyes the most comfortable reading angle and reduce unnecessary fatigue. It is best to place the monitor side by a window. On the one hand, natural light can be used to dilute computer radiation and reduce harm to the body. On the other hand, sufficient natural light is of great benefit to vision. \x0d\In order to protect your eyes, you can follow your doctor's advice and use some eye drops. Please keep blinking at a certain frequency to reduce visual fatigue. After using the computer, scrub your face with warm water to eliminate harmful particles on your skin, keep your skin clean and prevent skin discomfort. After using the computer, you can also drink a cup of tea. On the one hand, you can relax your body and adjust your mood. On the other hand, tea can improve your eyesight and refresh your mind. \x0d\\x0d\3. Computer equipment that is beneficial to health\x0d\ Nowadays, computer applications are becoming more and more popular, and people use computers for longer and longer periods of time. Sitting in front of a computer in a stiff posture for a long time, with your eyes facing a screen with electromagnetic radiation, and your wrists and fingers doing mechanical repetitive work for a long time, it can be said with certainty that it is harmful to the human body. In order to reduce the harm to the human body caused by these equipment and mechanical movements, in addition to doing some self-protection, it is also very important to choose some computer equipment with health care functions and ergonomic design. We have selected some more representative computer equipment for readers' reference. \x0d\ (1) Invisible goggles\x0d\ Invisible goggles are a thin film PVC soft lens. It is a patented product recommended by foreign magazines such as "PCMagazine" and "VisionFitness". It has the functions of preventing eye fatigue, resisting strong light, and Effects such as reflecting light, reducing glare, increasing contrast between light and dark, increasing clarity, and reducing UV rays. The details are as follows: \x0d\ Anti-static charge, anti-radiation, reduce human body damage and reduce the incidence of infertility. \x0d\Absorb screen glare, reflected light, and glare to absolutely prevent damage to your eyes. \x0d\ Reduce eye fatigue caused by looking at the screen for a long time, and prevent myopia and astigmatism. \x0d\Improve the light transmittance and dust accumulation problems between general goggles and the screen. \x0d\Easy to install and maintain, and durable. \x0d\ (2) Ergonomic keyboard and mouse \x0d\ Using computers and typewriters requires keyboard operations. At present, workers who engage in keyboard operations for a long time often cause fatigue on the wrists, arms, shoulders and backs, which affects work and rest. From an ergonomic point of view, in order to improve work efficiency and operate for a long time, the operator should be able to adopt a comfortable and natural working posture. Workers who adopt abnormal postures due to the existing keyboard operating conditions will cause physical damage to their bodies. The main cause of fatigue. Because when operating a keyboard on the current workbench, if the worker's wrist is placed on the workbench, since the key surface of the keyboard is higher than the workbench, the wrist must be raised, which will cause wrist pain over time; while hanging the wrist or Although the operation of hanging elbows is more flexible, due to the lack of support on the hands, the muscles of the arms or shoulders have to remain tense, so it cannot last long and is easy to fatigue.
Regarding this issue, the current ergonomics research conclusion is that "the height of the keyboard from the table to the middle row of keys should be reduced as much as possible. If the thickness of the front edge of the keyboard exceeds 50mm, it will cause the wrist to rise excessively, thereby increasing the load on the hand. This thickness is the best It is best to keep it at about 30mm, and a palm rest can be added if necessary. This can be solved by thinning the thickness of the keyboard itself and adding a hand support in front of the keyboard. The degree to which the keyboard can be thinned is limited. The keyboard can make the user's hands and wrists more relaxed and in a natural state. This can prevent and effectively reduce wrist muscle strain. The keys of this keyboard are at a comfortable angle for the user. \x0d\In terms of adding hand supports in front of the keyboard, there are currently "key rests" used on desktop computer keyboards that are similar to the palm rest principle. They can hold up the wrists to prevent them from tilting up. The disadvantage is that they will take up a lot of space. Part of the countertop in front of the keyboard. When the countertop is narrow and the keyboard is close to the front edge of the workbench, the forearm still lacks proper support by just using the key rest or palm rest. In addition, some computer desks are equipped with a strip at the front edge of the movable table where the keyboard is placed. When operating the keyboard, you can rest your forearms on the top of the bezel that is slightly higher than the countertop, and your wrists do not have to be raised. \x0d\The ergonomic mouse is the most healthy mouse you can buy. It conforms to the human hand. The natural shape can prevent and effectively reduce fatigue caused by repeated use, such as wrist syndrome, and this newly designed mouse pad allows the user's arm to move easily on the workbench, reducing wrist pressure or other repetitive stress. damage, and this mouse pad can make the mouse positioning more precise \x0d\ (3) Comfortable computer chair \x0d\ This is the latest ergonomic computer chair, which is completely based on the operator's most comfortable position when using the computer. Designed with a relaxed posture, the operator can avoid local muscle fatigue caused by spinal deformation, and its adjustable armrests allow operators to adjust the height of the armrests according to their own conditions to reduce elbow and wrist fatigue. \x0d\ (4) Low-radiation monitor \x0d\ Computer screens produce a large amount of radiation, which will inevitably cause greater harm to operators who use computers for a long time. In order to reduce this hazard, find a low-radiation monitor. , becomes extremely important. \x0d\Ultra7000 breaks the latest Swedish standard: calculated results, in front of a 20-inch Ultra7000 display, there is only 0.1 milligauss of radiation, which is only one-twenty-fifth of the standard value. x0d\(5) Professional computer workbench\x0d\This professional computer operator's workbench combines the advantages of the above various computer health equipment. If you want to work in front of the computer really easily, you might as well give it a try. The price is really not cheap.