Long-term use of computers can cause poor eyesight. Keep your eyes on the screen when using the computer. The brightness of the display, the radiation of electromagnetic waves, the flicker and reflection of the fluorescent screen will all cause visual fatigue. If you use incorrect operation methods, or your eyes move around the screen, keyboard and files, it will accelerate eye fatigue and your eyes will feel sour and fuzzy. Over time, your eyesight will decrease.
Long-term use of computers can cause backache. Generally, sitting posture is used to operate the computer, which has high repeatability and is mainly operated by keyboard and mouse. In this case for a long time, it is easy to appear fatigue and burden of local musculoskeletal system, such as shoulders, hands and wrists, upper arms, back and head. Fatigue, soreness, numbness and even stiffness, and sometimes it is easy to cause various complications, such as arthritis and tendon inflammation.
Long-term use of computers should pay attention to health, and put forward some suggestions and measures for reference:
1. After using the computer for one hour, take a rest 15 minutes, relax your eyes and body, and eliminate fatigue.
Second, often do indoor sports during rest, such as walking, abdomen and chest, wrist shaking and so on. The author's experience is to wash your face more at rest. Washing your face can not only cause the movement of the shoulders, waist, hands and other organs, but also increase the blood circulation of the face, especially around the eyes, with good results.
3. Take the correct posture, sit up straight, the upper arm is naturally straight, the forearm is vertical or slightly upward 10-20 degrees, the wrist is flush with the forearm, the thigh should be flush with the chair surface, and the calf and thigh are at 90 degrees. Pay attention to the correct posture: the seat should be straight and comfortable when operating. The center of the computer screen should be installed on the same horizontal line as the operator's chest, and the distance between the eyes and the screen should be 40-50 cm. It is best to use a chair with adjustable height. During the operation, you should blink or close your eyes for a while frequently to adjust and improve your vision and prevent it from declining.
Four, the screen position of the display should be below the line of sight 10-20 degrees, and the distance from people should be 0.6-0.7 meters.
5. Use the computer continuously for no more than four hours.
6. The indoor light should be soft, and the space behind the display should be as large as possible, so that the user's eyes can rest away from the screen.
Seven. Eat more foods rich in vitamin A and protein, such as carrots, bean sprouts, lean meat, animal livers, etc., and often eat some green vegetables, which is beneficial to the health of computer operators.