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Watching TV for a long time watching TV has now become an indispensable part of life for many people. Some people see it for hours, especially when the elderly have nothing to do, do not love activities, and even love to sit in front of a TV. kill time. The result was dizzy brain swelling, fatigue and weakness, the medical community called "TV disease."
Watching TV too long is not good for the eyes. Some people have done experiments. For a continuous viewing of 4 to 5 hours of television, vision will be temporarily reduced by 30%. It will be restored after a period of time. If you watch TV continuously for a long time, your vision will not be restored, and you will develop long-term vision loss. Especially if you look at a color TV, you will see a lot of depletion of rhodopsin in the cylindrical cells on the retina.
Watching TV after drinking is even more unfavorable to the eyes because alcohol can damage the eyes, make the eyes congested, and the optic nerves shrink, which can lead to blindness. Watching TV after drinking is equal to burning oil and has great damage to eyesight. Therefore, it is not advisable to watch TV after drinking, and it is not advisable for most people to watch TV too long.
Turn off the lights and watch TV
People can't live without TV and computer every day. TVs need high concentration of eyes. Over time, many people have different degrees of eye fatigue symptoms, especially in white-collar workers who deal with computers all day, 90%. All these have varying degrees of eye fatigue symptoms.
Some people usually like to turn off the next light while watching TV or using a computer, leaving only the light on the screen. Ophthalmologists pointed out that this is not right. At this time, the contrast of light will be particularly high, and the eyes will feel fatigued easily. If the time is long, it will affect the eyesight and even damage the eyes.
Watching TV is changing frequently
People all know that watching television for a long time can cause eyestrain and affect vision. However, according to a recent survey by researchers, frequent channel changing is more damaging to the eyes than watching television for a long time. The moment when watching television changing Taiwan is the biggest time for eye irritation, because most TVs in the moment of channel change will appear black screen and suddenly brighten up. At this time, the sudden change of light will cause certain eye irritation. Taiwan is too frequent and it can easily lead to eye strain.
The researchers pointed out that before watching television for Taiwan, it is best to close your eyes first, or blink a few more times after switching because it can stimulate the secretion of the eye's lacrimal gland or exercise the muscles around the eyes to avoid eye fatigue. In addition, watching TV for more than half an hour, it is best to look into the distance and let your eyes rest.
Watching TV on a car
Many televisions now have televisions that allow visitors to spend time boring during the ride. Televisions are usually installed in the front of the car. The car will play some TV programs or videos while driving. It stands to reason that this is the performance of quality service. However, when people watch TV for hours, many people will have swollen eyes, dryness, and even dizziness, nausea and vomiting.
Due to the car's driving vibration and limited body space, only 14-inch TVs can be installed in the car. However, most coaches are long and the distance and angle of watching TV in the car are not ideal. A more scientific argument is that when watching TV, the distance between a person and a TV should be 4-6 times the screen diagonal, and the angle viewed on both sides of the screen should not be less than 45 degrees. However, in the coaches, the front passengers are mostly 0.5 meters away from the TV. The passengers in the front seats are less than 30 degrees. The passengers sitting in the back are too distant to see the image. . Watching TV under conditions of improper distance and angle can easily hurt the eyes. And because the car is constantly shaking when driving, the TV image is blurred and unclear, over time, there will be eye pain, blurred vision, and even headache, chest tightness, nausea and other discomfort, so watch less TV in the coach.
Watching TV on the bus
Nowadays, mobile TVs are installed on buses in many cities. In the boring rides, rich television programs have become the only pastime for many passengers. However, most people will stare at the TV screen for a long time while driving. Actually, this is unscientific.
When the human eye looks at a relatively fixed object, the contraction and extension of the ciliary muscle can remain relatively stable, and the eye will not feel fatigue in a short time. In the bus, there are often large bumps and wobbling. The TV screen also flutters along with the carriages. In order to see the images and subtitles on the screen, the ciliary muscles are forced to constantly adjust, which is easy to produce vision. fatigue.
In addition, due to the limited space on the bus, when people are on the bus, some people will stand in front of the TV. Some people will be far away. In order to see the images clearly, the adjustment of the eyes is often in a state of tension. There are also people standing there. Looking at places with large screen skew angles, this is more likely to cause visual fatigue; some people just sit under the TV and will look up at the TV. For a long time, besides hurting the eyes, the neck muscles will also feel sore. Tired.
These improper practices, it is easy to make people dry eyes, soreness, pain and other symptoms, but also aggravate myopia, and even induce acute glaucoma.
Therefore, on the bus, it is best not to stare at the TV screen for a long time. You can watch for a while, close your eyes and rest for a while, or take a look outside the window and let the eyes relax.
Tips: How to protect eyes when watching TV?
1, the location and distance of the TV: The TV should be placed as much as possible on the softer corner of the light, the height should be appropriate, not too high or too low, the center of the screen of the TV and the eye is best at the same level Or slightly lower. When watching TV, the eye muscles are in a state of tension. The distance between the eyes and the screen should be appropriate. The distance is too close and looks unclear, which can easily lead to visual fatigue. The distance is too far away and it is not easy to see. In general, the distance between the TV and the person should be 4 to 6 times the diagonal of the screen. It can also be measured by a simple method. Stretch a hand straight forward, place the palms horizontally, close one eye, if the palm of your hand Just cover the TV screen, this distance is more appropriate. In addition, when watching TV, it is best to sit in front of the screen. If you sit on the side, the viewing angle should not be less than 45 degrees.
2, the contrast of the TV and the brightness of the room: the contrast of the TV is too large, the brightness of the light is not uniform, the eyesight is more concentrated, and it is easy to cause eye fatigue. The contrast is too small, the color of the image is not clear, and it is not easy to see clearly. Some people watch TV like to turn off all the lights in the room. The brightness of the screen is in stark contrast to the surrounding dark environment. For a long time, the eyes are very uncomfortable. On the other hand, if the light in the room is bright, then the image on the screen will appear grey and unclear. Therefore, when watching TV, the light in the room should not be too dark, nor too bright, you can open a soft light or red light in the room, so that the eyes are not easily fatigued.
3, control the time watching TV: watching television can not be too long, especially young people, with 1 to 2 hours is appropriate. During the watching process, you must exchange the gap between programs or advertising programs, close your eyes for a short break, or look into the distance for a while to avoid eye fatigue and affect your eyesight.
4, in order to protect the eyes, usually can eat more vegetables and fruits, such as carrots, bean sprouts, oranges, oranges, red dates, etc., have a certain role in the protection of the eyes.
The summer is approaching again, and various popular TV dramas have logged into David Vision to capture the summer ratings. So how do you look at TV episodes and don’t get your eyes? Under what circumstances is watching TV most hurtful? The following is a detailed description by Xiao Bian.
September 20, 2024