Because of the development of modern society and the use of various electronic devices in our life, many people like to watch electronic products for a long time, so we have to know that the damage to the body is very great. One of the biggest influences is our eyes. And what small edition wants to say about this article is the expert teaches you: the good habit of healthy watch TV!

5 criteria

Most comfortable to watch

If you want to watch TV comfortably, you should pay attention to the brightness and height of the TV. Recently, a research report from the Massachusetts Institute of technology in the United States guided this.

Placement height. The center of the TV screen should be 3-5cm below the horizontal line of sight of the viewer, so as to avoid muscle fatigue in the neck caused by looking up or down.

TV brightness. If the contrast and brightness of the TV are too large, although the image is clearer, but due to the uneven brightness of the light, people’s vision is concentrated in the bright place, which is easy to cause eye fatigue; if the contrast and brightness are too small, the image color is not clear and can’t be seen clearly. Therefore, the TV brightness and contrast must be moderate and soft.

Viewing distance. The size of the TV is measured by the diagonal length of the screen, such as 29 inches and 34 inches. Generally speaking, the larger the TV is, the longer the viewing distance will be. The safe distance is the TV size × 0.1. For example, a 42 inch TV should be at least 4.2 meters away, so it is comfortable to watch. Therefore, the choice of TV should be proportional to the living room area. If the living room or bedroom area is not large, it is better not to put too much TV.

Room light. In the daytime, when watching TV, it’s better to draw the curtain to avoid the reflection of sunlight on the screen and the unclear picture. In the evening, when watching TV, the light in the room should not be too dark or too bright. You can put a soft light beside the TV to reduce the contrast between the light and the dark, and your eyes will not be easy to ache.

Best seats. The light emitted by TV is strong, while the light in the center of the screen is relatively stronger. Therefore, when watching TV, it’s better to sit slightly away from the center of the screen (about 30 degrees), so as to avoid eye irritation caused by strong light. In addition, try to avoid sitting on the soft sofa for a long time. It’s better to choose the hard back chair.

4 groups of people

Posture to be corrected

Although TV programs are suitable for all ages, but for different groups of people, the posture of watching TV is also very exquisite.

Don’t sit long, old man. When their children grow up and are at home, the elderly will feel lonely. Watching TV can make them relax and happy. The old man has spent more time watching TV, and the “health red light” starts to light up frequently. In response, Zhang hude, a professor in the health care department of Beijing University of traditional Chinese medicine, told our reporter that the elderly’s body metabolism is going downhill, and if they sit for a long time, they will suffer from leg and foot swelling and back pain. Therefore, when watching TV, it’s better to get up and stand for a while every 20 minutes. You can also put your feet on a lower stool to relax your legs. In addition, the elderly with high blood pressure and coronary heart disease, it’s better not to watch the great sadness, great happiness, intense programs or competitions.

White collar, don’t lie down. It’s the happiest thing for office workers who have been sitting on stools all day to go home and lie in a comfortable bed. But if you lie on the bed and watch TV on the sofa for a long time, you will not be able to bear it. Kang Nan, deputy chief orthopaedic physician of Chaoyang Hospital in Beijing, pointed out that lying and watching TV make the head and neck become the focal point, and gradually the neck will nest into a “C” shape, which is just contrary to the physiological curvature of the cervical spine, so it is easy to have neck pain. It can also cause small joints in the thoracic spine to be disordered, making you feel stuffy and short of breath.

Don’t squint, kid. Watching TV can broaden children’s vision and increase their knowledge. Zhong Xinwu, director of the excimer laser treatment center of the eye center of Sun Yat sen University in Guangzhou, pointed out in an interview with the life times that children are active and can’t sit in the right position when watching TV. It’s easy to tilt their sight angle. If they look sideways for a long time, it may have an impact on their eyeball development, which may also cause Myopia. Therefore, parents should supervise and do not let children squint for a long time. It’s better for older children to watch for half an hour at a time. Children under 3 years old can watch for 10-15 minutes.

Pregnant women should not sit up straight. Pregnant women sit for a long time, their legs and feet will swell. When watching TV, they may as well lie down half way, but it’s better to keep the head and neck in a straight line, and sit straight on the head of the bed, so they can put a soft cushion on the waist, which makes them feel more comfortable.

3 habits

Get rid of “TV disease”

When you watch TV, you can form the following three good habits to keep your discomfort away from you.

Blink. If you watch TV for a long time, your eyes will be dry and sore. Blinking more can relieve these discomfort. “In general, blink at least 7-12 times per minute, and it must be completely closed and then opened to effectively blink. Otherwise it won’t do much. ” Zhong stressed that, especially when changing the stage, we should blink more. Research shows that in the moment of changing stations, the screen will suddenly turn black and then bright, which is the most irritating to the eyes.

Frequent activities. Don’t watch TV for more than 45 minutes at a time. If you feel that your back hurts and your eyes are sore, get up and move quickly. You can close your eyes, gently press your eyes with your index fingers, and massage them clockwise and anticlockwise; use your fingers instead of the comb to “comb your hair” from the forehead to the back of your head; first lower your head, then raise your head, do it several times, or swing your head left and right; hold your chest and bend down: take a deep breath, then hold your chest, then exhale and bend forward.

Have some tea. When watching TV, drinking tea, especially green tea, has a good anti radiation effect. And tea contains vitamin C and a, trace elements such as calcium, iron and so on, which are nutrients to protect eyesight.

Finally, experts remind us that it’s better not to watch TV when eating or just after eating. While eating and watching TV, attention shift will suppress appetite, especially children, which will lead to malnutrition over time. Watching TV immediately after meals will affect the digestion and absorption of food.

That’s how to watch TV healthily. Do you remember? Tell your family about it! If you are interested in children’s home electric shock prevention knowledge, please go to this safety net to find relevant information.