Are anti-blue light glasses useful

Nowadays, there are many things around us that have radiation to the body. Take blue light for example. You may have heard that blue light is very harmful to the eyes. However, the existence of blue light is inevitable in life, because many of our daily necessities have blue light, such as lights. Many children have poor eyesight since childhood, but now there are anti-blue light glasses, which are good for preventing the harm of blue light.

"Are anti-blue light glasses really useful?" This is the most common question people ask. It is also the biggest doubt in people's minds. Why didn’t people in the past pay special attention to the hazards of blue light? But nowadays, newspapers and media often mention the harm of blue light to the eyes? Let’s talk about the hazards of blue light and how to prevent it effectively.

First, let me introduce what is Blu-ray? Why is blue light harmful to our eyes?

We have known since childhood that natural light can be divided into seven colors: red, orange, yellow, green, blue, indigo, and purple after passing through a prism, so we can see a beautiful rainbow. That is to say, the sunlight we see is a mixture of these seven colors. But the radiation waves emitted by the sun are not just this part, but our eyes can only sense the wavelengths in a very small range from 380nm-780nm, and convert them into the beautiful world we can see.

Blue light is visible light next to ultraviolet light, with a wavelength of 380nm-500nm. The visible light in this band is close to the wavelength of ultraviolet light, so its energy is relatively higher (of course it is still lower than ultraviolet light). However, long-term exposure can cause great damage to the fragile eye structure.

Some people may ask why we have not often heard of the dangers of blue light before, but this new term has only been created recently? Human eyes have adapted to the natural environment due to the evolution of species, so the problem of blue light hazards was less likely to occur in the natural environment of previous agricultural societies. However, modern people are exposed to some 3C electronic products for a long time and at close range, and these products all use LED as the backlight source. We know that LED uses blue light diodes to generate light and then uses phosphors to adjust the light to white light. But in fact the ratio of blue light is still quite high. This can be verified from the product specifications of various LED manufacturers.

You know, it took tens of thousands of years of evolution for the human eye to adapt to the natural environment. It is impossible to respond and protect immediately to short-term changes in the environment. Just like enjoying sunbathing for a few hours at the beach as usual, I only got a healthy bronze skin. Nowadays, the same environment may result in sunburn and redness. What is the reason? As the natural environment has been destroyed by humans, the ozone layer in the atmosphere has become thinner and holes have appeared. A large amount of ultraviolet rays are directly irradiated onto the ground surface, so the intensity of ultraviolet rays has increased a lot compared with the previous environment, making modern people more susceptible to diseases such as skin cancer and cataracts.

Excess blue light passes through the lens of the eye and reaches the retina directly. Medically, it has been discovered that prolonged and excessive exposure to blue light on the macula of the retina can easily cause lesions. Macular degeneration is a very terrible and difficult to treat eye disease in medicine.

Are blue light blocking glasses useful? Modern anti-blue light glasses use advanced optical technology to filter, block or absorb specific blue light wavelengths to reduce the damage of blue light to the eyes. Modern people are overly dependent on 3C products, and anti-blue light glasses can be said to be an effective and convenient eye protection tool. Medically, lutein supplementation can also reduce and lower macular degeneration. Of course! Reducing the time of using 3C products such as mobile phones, tablets, and televisions is the most effective and direct way to protect your eyes.

Regarding glasses, it is actually a professional technology that combines optics and manufacturing technology. It involves a lot of related knowledge, and it changes with each passing day. We welcome fellow enthusiasts or consumers who are interested in eyewear-related skills to discuss and learn from each other through this channel.