As people like to use mobile phones more and more nowadays, computer and other electronic products are paying special attention to the protection of eyesight. There are a lot of products on market that can prevent blue light, a few are the mobile phone film that prevents blue light, a few are the glasses that prevent blue light, which kind just is the most effective after all?

All the cell phones Ive bought in the past few years come with a protective shield, and Ive also bought blue-blocking glasses.

Here is my research on the harm of blue light over the past few years, as well as the experience and lessons learned from blue light prevention devices.

. Blue light is not as harmful as it is supposed to be. It can damage the eye, but only if it is exposed to enough blue light for a long enough time. In general, illuminated displays at home do not produce strong blue light hazards and do not need to take action. But that doesnt mean you can forget about blue light. Scientists have shown that 30 minutes of blue light exposure in an indoor environment can delay the onset of deep sleep by 30 minutes.

If before going to bed kept watch phone, constantly watching video or playing games in the mobile phone or display blue can make our bodies the secretion of melatonin, melatonin is our natural secretion of a hormone in the human body, he can help us to sleep, improve sleep quality, if melatonin decreases, cant sleep very deep. How can we prevent blue light from interfering with our sleep? There are several commonly used anti blue light products on the market: anti blue light glasses, anti blue light mobile phone, and anti blue light display.

First of all, when we take a close look at the mirror of the eye, we will see that the lens is actually yellow. Ordinary lenses are different in color, because there is a layer of coating on the surface of this kind of lens, which is used to absorb or reflect blue light.

Blue light blocking glasses seem to be effective, but there is no clinical data to show that they reduce eye fatigue and discomfort. Scientists have studied blue-blocking eyes and found no effect on fatigue relief or improved sleep.

I have bought several pairs of blue-blocking glasses, which are much more expensive than normal glasses.

Finished talking about glasses, lets say that the mobile phone film against blue light after all has no use? Phone modes are common, either to protect against blue light or to prevent the glass on the phones surface from being knocked out. But the blue light blocking film is much more expensive than ordinary phone film. I once bought a mobile phone film for more than twenty dollars. Knock against after broken, and then buy a new one, very distressed. Later, I did not continue to buy blue light blocking mobile phone membrane, but bought ordinary mobile phone membrane, I found that except for the difference in the color displayed on the screen, the fatigue degree of eyes is the same. The most important thing to protect the eyes is to adjust the brightness of the mobile phone. By setting the brightness of the mobile phone to the eye protection mode, the irritation to the eyes will be greatly reduced in this mode. Some people say that as long as there is an eye protection mode, there is no need to buy blue phone film, because two together for blue light protection effect is not good. Since I dont have high requirements for color photos, there is no problem with the blue film, but for some people who want more realistic color pictures, the quality of their photos will be affected by the blue film.

Finally, blue light resistant monitors, there are a lot of monitors on the Internet that say filter blue light for Germany. In fact, the display is simply modified by LED backlighting technology, which increases the wavelength of blue light and reduces the amount of harmful light emitted. How useful is this blue-ray proof display? The monitor has been tested by the National Quality Certification Agency and found to work because it reduces eye strain compared to other monitors. This has been proved experimentally.

. Experiment results showed a low blue light display. The eye strain and stress increases less and the eyes are more focused than the normal display, so the display can reduce the visual fatigue caused by blue light. Participants were also interviewed and said they felt more comfortable with the display.

. Based on the comparison of the above products, if the device itself has the function of removing blue light, it will be the most effective. Because the blue light in nature is also very large, the blue light we usually get from screens or other electronic devices is not so harmful, because like mobile phones, The blue light produced by devices like computers is lower than that produced by nature. The key is to develop good eye habits and learn how to protect our vision. We look out the window every 20 minutes in front of the computer or phone for 20 seconds to relax our eyes. Fatigue at work also remember to let your eyes relax, more blink, staring at the screen for a long time will let us forget to blink, itll be easier dry eyes, also dont rub eyes, this will cause the change of intraocular pressure, and damage to the corneal cells, may also cause keratitis, corneal curvature, rubbing your eyes can influence induced astigmatism. In addition, we should keep our computers away from our eyes, so that we can reduce the fatigue level and dont always play with mobile phones when we go home.