Eye protection TV is a lie?reveal the truth
Anyone who has browsed smart TVs on e-commerce platforms is familiar with the function of “eye protection”. It is no exaggeration to say that the gimmick of eye-protecting TV has really moved the hearts of most parents. After all, myopia has become the primary enemy that endangers the health of young people. We don’t want our children to wear myopia glasses at a young age. .
E-commerce quotation ￥7499￥9999 The World Health Organization Eye Care Association and well-known domestic eye hospitals have shown that blue light can penetrate the lens to reach the retina, causing optical damage to it, and accelerating the oxidation of cells in the macular area.
Looking directly at the light source for too long will gradually accumulate blue light damage to the eyes This is also one of the biggest reasons for the sharp increase in the rate of myopia among young people in today’s electronic and digital age.
However, when we open JD.com, we can find that almost all TVs with prices ranging from a few hundred to tens of thousands of yuan are promoting their own eye protection technology and functions. On low-end TVs, what we see the most is the “anti-blue light” design. This feature claims to reduce the harmful blue light emitted by LCD TVs and protect eyesight, but is it really effective?
We know that short-wave blue light is indeed the most harmful light source to human eyes. Short wavelength and high energy are the main characteristics of blue light. Irreversible damage.
The trick of “reducing blue light” is exactly the countermeasure proposed by smart TV manufacturers to prescribe the right medicine to the case. It sounds reasonable, but the actual application is far from satisfactory.
At present, the anti-blue light measures applied by most low-end LCD TVs often only adjust the color temperature of the TV, so that the picture looks more warm, so as to achieve the effect of reducing blue light output to a certain extent.
However, the disadvantages of this method are quite obvious. It often causes obvious color cast in the picture. If our eyes stare at such a picture with serious color difference and yellowish color for a long time, it will be harmful to the health of eyesight, but not beneficial. Such a simple and rude anti-blue light mode will eventually affect the user’s vision health from another aspect.
In addition to blue light, the strobe of LCD TVs is also one of the main factors affecting vision health. LCD TVs rely on the light source on the back to display images, and when these lamp beads are powered on, they will produce high-frequency flicker.
In a short period of time, the human eye may not be able to detect these stroboscopic flickers, but our visual cells are quite sensitive to such stroboscopic flickers, and long-term viewing will also cause irreversible damage.
So is there a more reliable eye protection TV? Many people will mention OLED. It is true that OLED TVs have natural advantages over LCD TVs in terms of eye protection. How does it do it?
We have mentioned above that the reason why LCD TVs cause certain harm to human eyes is mainly caused by the short-wave blue light in the backlight.
(Of course, short-wave blue light does not only exist in TV backlights, mobile phone screens also produce harmful blue light, so we must get rid of the habit of playing with mobile phones before going to bed as soon as possible.)
And OLED can make each pixel emit light independently without backlight, so it can naturally avoid the short-wave blue light that is most harmful to human eyes.
In addition, the setting without backlight allows OLED TVs to get rid of another factor that endangers vision health: strobe. Due to the unique imaging principle, OLED TV can achieve almost no flicker, and in the same environment, it can indeed play a good eye protection effect.
Of course, it is not realistic to rely on hardware alone to achieve real eye protection. It is still necessary to develop good eye habits in daily life, such as adjusting the screen settings of the TV, and trying to take other eye care measures, resting eyes regularly, maintaining adequate Good indoor lighting, avoiding excessive use of eyes, etc. In this regard, the editor summarizes the following three points:
1. Change the viewing environment, do not watch TV in a dim environment
The most important thing to protect eyesight is to change the environment in which we watch TV. For example, we can turn on the light in the living room to avoid watching TV for too long in a dim environment, because our eyes will Staring at the screen for a long time due to difficulty in focusing reduces the frequency of blinking, leading to problems such as dry eyes, which ultimately affects vision health.
2. Do not watch TV too close
When we (especially children) watch TV, if we are too close to the screen, it will cause watching TV to become short-distance eye use. Too long time is the direct cause of myopia. If the eyes are always in a state of tension and adjustment, it will lead to the formation of myopia or the deepening of the original degree.
3. Control eye use time and increase outdoor activities
Studies have shown that daily activities in the sun can effectively prevent myopia and other conditions, which is beneficial to eye health. And if children are addicted to watching TV, the frequency of outdoor activities will be relatively reduced, which will eventually endanger vision health.