Home » Tell you how to watch TV to protect your eyes

Tell you how to watch TV to protect your eyes

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It has been nearly 90 years since television appeared. It has been playing a very important role in family entertainment and information acquisition. Even today, when the Internet is highly developed, many people can’t live without TV. However, TV, which relies on vision to transmit information, will cause certain stimulation to human eyes. Incorrect watching TV will also damage eyesight. So how can we watch TV to protect our eyes?

The presentation of TV content mainly depends on visual transmission. There is a big gap between the brightness, color and definition of the picture presented by electronic imaging equipment and the real environment, and even harmful radiation. It is precisely because of this that TV can stimulate people’s eyes more or less. Incorrect watching TV can even damage their eyesight and lead to eye diseases.

In real life, many people have a variety of bad habits and wrong ways of watching TV. Many times, unconsciously, our eyes have been injured to varying degrees. So how to watch TV to protect your eyes? In fact, we should start from two aspects. On the one hand, we should start with the TV and try to choose products with little stimulation to both eyes. On the other hand, we should start with the habit and put an end to the bad habit. Healthy watching TV is the only way.

As far as television imaging technology is concerned, different types of television stimulate the eyes differently. Because of the principle of electron gun scanning, the earliest CRT kinescope television would produce some electromagnetic radiation and flicker during the imaging process, so it was the most irritating to the eyes.

The plasma TV was certified by medical institutions as the TV product with the least damage to eyes. However, due to the problems of market and energy consumption, it is on the verge of delisting. Although the latest OLED has joined the TV market, it has not yet been commercialized and scaled. The main force of the market is still LED backlight LCD TV, so we will analyze the mainstream LCD TV, what kind of TV is eye protection?

Moderate brightness, easy to use

High brightness is the main cause of LCD TV’s damage to human eyes. Many seemingly very clear and bright pictures actually hide the stimulation of high brightness. Moderate brightness means that the brightness must reach the brightness suitable for the eyes to watch, that is, in the normal living environment, the color temperature of the screen is 5500-6500, the average brightness is less than 150cdm2, not too dark or too bright, and the light should be soft.

In order to make the picture bright, some TVs set the brightness very high. Moreover, the range of brightness adjustment is limited, so it is impossible to adjust the appropriate brightness under weak ambient brightness. Some even if adjusted, the screen will appear uneven brightness and other issues. Therefore, many TVs have automatic brightness adjustment technology, which can automatically identify the brightness of the environment to adjust the TV, so as to achieve the best viewing brightness of human eyes.

Good color restoration, no distortion

Pure color means that the color quantity of three primary color combination is consistent with the natural color, and the color calibration of TV still needs to be accurate. Excessive or lack of saturation contrast will cause certain damage to the eyes when watching for a long time. Especially for children, who are in the growth stage, the loss or deviation of color will affect the normal development of children’s eye pigment. Only accurate and natural colors can protect children’s eyes, and visual pigments can correctly identify colors.

 

 

In order to make the picture bright, some TVs set the brightness very high. Moreover, the range of brightness adjustment is limited, so it is impossible to adjust the appropriate brightness under weak ambient brightness. Some even if adjusted, the screen will appear uneven brightness and other issues. Therefore, many TVs have automatic brightness adjustment technology, which can automatically identify the brightness of the environment to adjust the TV, so as to achieve the best viewing brightness of human eyes.

Good color restoration, no distortion

Pure color means that the color quantity of three primary color combination is consistent with the natural color, and the color calibration of TV still needs to be accurate. Excessive or lack of saturation contrast will cause certain damage to the eyes when watching for a long time. Especially for children, who are in the growth stage, the loss or deviation of color will affect the normal development of children’s eye pigment. Only accurate and natural colors can protect children’s eyes, and visual pigments can correctly identify colors.

 

The picture is clear and moving without dragging shadow

Picture tailing is a very serious problem of LCD TV. Trailing images not only seriously affect the user’s viewing, but also cause great damage to the eyes. TV tailing will produce a layer of residual shadow on the image that should appear, so it is difficult for human eyes to focus accurately when watching. Will cause a very heavy burden on the eyes, watching for a long time will also lead to dizziness and vision decline and other problems.

The phenomenon of LCD TV tailing is mainly reflected in the response time of TV. The shorter the response time is, the less obvious the tailing phenomenon is. If the response time is short enough, there is no residual shadow in the dynamic TV picture, and the dynamic picture transformation speed is basically consistent with the residual shadow cycle of the eyes, or faster than the residual shadow time of the human eyes, so as to ensure the good focus of the eyes and prevent the occurrence of fatigue. Long time viewing still has good comfort. It can avoid the possible damage to the ciliary muscles of children’s eyes caused by dynamic image trailing and residual shadow.

Of course, eye protection can not only rely on the hardware equipment of TV, but also pay attention to our habit and way of watching TV. The TV that meets the above mentioned items only has less stimulation to the eyes and is less prone to watching fatigue. It’s not that a good TV doesn’t stimulate the eyes. There is no real eye protection TV. Now let’s talk about what we need to pay attention to when watching TV.

Suitable brightness

Some people are used to turning off all the lights in the room when watching TV. They think that the TV screen is very bright and clear. In fact, the brightness of the TV screen is very different from that of the surrounding area. On the contrary, it will increase the fatigue of the eyes and lead to myopia. On the contrary, if the light in the room is very bright, the image on the screen will appear gray and unclear. When watching TV, the light in the room should not be too dark or too bright. You can turn on a soft light or red light in the room, so that your eyes are not easy to get tired.

When watching TV, the brightness of TV must be adjusted according to the intensity of ambient light to achieve the brightness suitable for eyes. That is to say, in the normal living environment, the color temperature of the screen is 5500-6500, and the average brightness is within 150cdm2. It should not be too dark or too bright, and the light should be soft. You can first turn down the brightness of the TV until the picture is unclear, and then turn it on gradually until it is clear and easy to watch.

● viewing distance and posture

The position of the TV and the posture of watching are very important. For the position of the TV, we should try to choose the corner with soft light, avoid no light and direct sunlight, the height is appropriate, not too high or too low. The height should be at the same level as the eyes, or slightly lower.

When watching TV, the eye muscles are in a tense state. The distance between the eyes and the screen should be appropriate. The distance between the eyes and the screen should not be too close or too far. If the viewing distance is too close, the graininess of the picture is enhanced, and the light accepted by the eyes is also increased, which is easy to cause visual fatigue. The viewing distance is too far for users to see the screen clearly.

In addition, we should also avoid watching TV from the side. Even if we watch TV from the side, the angle between the line of sight and the screen should not be less than 45 degrees, and we should not lie down or watch TV from the side.

It is not suitable to watch continuously for too long

Many people sit in front of the TV for half a day and never leave in the middle. Even during the advertising time, they have to change the channel to watch it. In fact, this will cause great damage to the eyes, especially children and adolescents. When people watch TV for a long time, the number of blinking is reduced, and the focus is constantly adjusted to ensure the clarity of vision, resulting in spasm of eye muscle regulation, decline of eye regulation ability, slow regulation speed, leading to dry eyes, fatigue, ghosting, blurred vision and other visual fatigue symptoms, and even complications such as dizziness, nausea, vomiting, poor limb blood circulation.

In addition, there will be temporary loss of vision, that is, pseudomyopia. For teenagers and children, the eyes are relatively fragile, a little inattention leads to real myopia. In the process of watching, you should take advantage of the gap between the exchange programs or advertising programs, close your eyes for a short rest, or look into the distance for a while, in order to avoid eye fatigue and affect vision.

Not suitable for watching in sports

The last point that is most easily overlooked is watching TV on the bus or on the treadmill. The contraction and extension of ciliary muscle can keep relatively stable when human eyes look at objects with relatively fixed distance, and the eyes will not feel tired in a short time. And in the bus, coach, treadmill movement, people or TV is constantly shaking. In order to see the image on the screen, the ciliary muscle is forced to adjust constantly, which is easy to produce visual fatigue. Serious eye pain, blurred vision, and even headache, chest tightness, nausea and other symptoms

Relatively speaking, in these sports occasions, it is better for us to listen to radio and music than to watch TV, which can not only enrich our journey and life, but also regulate our mood and maintain physical and mental health.

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