Are anti-blue glasses really useful? Learn about these practical eye protection knowledge

Nowadays, people's daily life is inseparable from computers and mobile phones, but these electronic products not only bring more convenience and fun to people, but also cause visual problems such as eye fatigue and deepening myopia.

Someone pointed out that “the high-energy short-wave blue light emitted by electronic products is the main culprit for dry eyes, astringent eyes, and eye fatigue”, so anti-blue glasses came into being, and their sales were good.

Can anti-blue glasses really protect your eyes, or are they just a market gimmick? Before drawing conclusions, we first need to understand what is Blu-ray?

Blue light is a type of electromagnetic radiation with a very short wavelength that produces a high amount of energy. While it's true that light can damage your eyes under certain circumstances, there's no scientific evidence suggesting that blue light is harmful to our eyes. But many people still think it is, which is why blue light-blocking glasses are so popular.

Blue light is a kind of electromagnetic radiation with very short wavelength and huge energy. Although light does damage our eyes in some cases, there is currently no scientific evidence that blue light is harmful to our eyes. However, many people still believe that blue light is indeed harmful, which is why anti-blue light glasses are so popular.

"Everyone is very concerned that (blue light) may be causing damage to the eye, and it's a valid concern, but there's no evidence it may be causing any irreversible damage," Dr. Rahul Khurana, clinical spokesman for the American Academy of Ophthalmologists , told Business Insider.

Dr. Rahul Kurana, clinical spokesperson for the American Academy of Ophthalmology, told Business Insider: “Everyone is very worried that blue light may cause damage to the eyes. This concern is reasonable, but there is no evidence that blue light may cause damage to the eyes. Cause any irreversible damage to the eyes".

Blue light exposure is nothing new. In fact, the sun is the largest source of blue light. Moreover, blue light is also present in fluorescent and LED light.

Blue light exposure is not uncommon. In fact, the sun is the biggest source of blue light. In addition, blue light also exists in fluorescent lamps and LED lamps.

But if blue light isn't harmful, then why are we constantly rubbing our peepers when we're looking at our screens? The answer is eyestrain: More than 60 percent of people experience problems associated with digital eyestrain. And blue light, it seems , isn't the cause. Instead, our eyes are so strained because most of us blink less when we stare at our digital devices.

But if blue light is harmless, why do we keep rubbing our eyes when looking at the screen? The real answer is eye fatigue: more than 60% of people have eye fatigue caused by the use of electronic products. The blue light does not seem to be the cause of these problems. The reason why our eyes are so tired is because most people blink less frequently when staring at electronic products.

So if eyestrain is the real issue, blue light-blocking glasses are probably useless. However, wearing them could potentially help you get a good night's sleep. That's because blue light, research has shown, affects your body's circadian rhythm, your natural wake and sleep cycle. According to Harvard researchers, any kind of light — including blue light — can tamp down your body's ability to secrete melatonin, a hormone that helps you sleep.

In other words, if eye fatigue is the real problem, then anti-blue glasses may be useless. However, wearing it may help you improve sleep. Because research shows that blue light affects the body's circadian rhythm, the biological clock. According to researchers at Harvard University, any kind of light (including blue light) will reduce the body's ability to secrete melatonin, which is a hormone that helps you fall asleep.

In addition to anti-blue glasses, there are also many ways to protect your eyes on the Internet, such as the following "bean paste green desktop".

According to the popular science website Guokang.com, the only possible way to set the computer to "bean paste green" is to make the screen brightness less glaring. For dry eyes caused by too few blinks and tears evaporating too fast, as well as visual fatigue and upper body pain caused by problems such as sitting posture and distance from the screen, "bean paste green" has no effect. It is not reliable to rely on this operation to protect eyesight.

So how should you protect your eyes if you have been using a computer for a long time? We have compiled a few tips:

Position your screen 20-30 inches away from your face, and make sure your eyes are level with the very top of your monitor. The key thing to remember is that you should be looking slightly down at your work. The center of the screen should be located between 15 and 20 degrees below horizontal eye level.

Place the screen 50-70 cm away from your face, making sure your eyes are flush with the top of the screen. Remember, the key is that when you look at the screen, your gaze should be slightly tilted downward. The center of the screen should be between 15 and 20 degrees below the horizontal line of sight.

Follow the 20-20-20 rule. Look away from your screen every 20 minutes for 20 seconds at a time and focus on a fixed point 20 feet away.

Follow the 20-20-20 rule. Move your gaze away from the screen every 20 minutes and stare at a fixed point 20 feet (about 6 meters) away for 20 seconds.

Most monitors let you adjust the color temperature manually. It's best to use a warmer (yellowish) color temperature in dark rooms and a colder (bluer) color temperature in bright rooms.

Most monitors can adjust the hue manually. It is best to use warm colors (yellow) in dark rooms and cool colors (blue) in bright rooms.