1. What Is Blue Light?
Our eyes can see such a colorful world, which is mainly composed of seven colors of red, orange, yellow, green, cyan, blue and purple. Blue light is one of them. In professional terms, blue light is a kind of visible light with a wavelength between 380nm-500nm in nature, which is divided into harmful blue light and beneficial blue light.
Harmful Blue Light
Among them, studies have shown that blue light with a wavelength between 380nm and 450nm is harmful to human beings. It can penetrate the cornea and lens, increase the amount of toxins in the macular area of the eye, and seriously threaten our eye health. The main sources are LED light sources, mobile phones, ipads, computers, LCD monitors and other electronic products. In the information age, we usually deal with mobile phones and computers, and are inevitably exposed to harmful blue light.
Beneficial Blue Light
Among them, studies have shown that blue light with a wavelength between 380nm and 450nm is harmful to human beings. It can penetrate the cornea and lens, increase the amount of toxins in the macular area of the eye, and seriously threaten our eye health. The main sources are LED light sources, mobile phones, ipads, computers, LCD monitors and other electronic products. In the information age, we usually deal with mobile phones and computers, and are inevitably exposed to harmful blue light.
2. The Principle Of Anti-Blue Light Glasses？
Presumably everyone already knows what blue light is. Let's talk about the principle of anti-blue light glasses. There are two types of anti-blue light glasses on the market,monomer blue light block and coating blue light block.
Monomer Blue Light Block
One is to add an anti-blue light factor to the lens base material to absorb harmful blue light, thereby realizing the blocking of harmful blue light. The color of the lenses of this kind of glasses is generally darker yellow, which is used to neutralize blue light.
Coating Blue Light Block
One is that harmful blue light is mainly reflected by the coating on the surface of the lens, which is simple and direct. This kind of glasses is not much different from ordinary optical glasses. The color of the lens is relatively transparent, and it will be slightly yellowish.
3. Is It Necessary To Buy Anti-blue Light Glasses?
The so-called thousands of people and thousands of faces, everyone's situation is different, not everyone is suitable for blue-light glasses, blind purchase will be counterproductive, I have summarized several types of people who are suitable for using blue-ray glasses and those who are not suitable for blue-ray glasses for your reference After reading it, you will know whether you need to buy blue light glasses.
Suitable For Blue Light Glasses
1). People who play mobile phones for a long time or work on computer screens for a long time
The harmful blue light itself mainly comes from electronic products such as mobile phones and computers. Nowadays, Internet workers stare at the computer screen all day, and their glasses are dry and uncomfortable. Anti-blue light glasses can effectively reduce their visual fatigue, especially those with dry eyes. , the improvement is really real.
2). People who have developed eye disease
Harmful blue light is more harmful to people with diseased fundus, so wearing anti-blue light glasses can effectively block harmful blue light.
3). People who do special work
For example, workers who use electric welding and fire glass, the blue light exposed to such work requires more professional protective glasses to protect the retina.
Not suitable for blue light glasses
1). People who want to prevent myopia
Saying that blue light glasses can prevent myopia is completely a scam. There is no report on the market to prove that blue light glasses can prevent myopia, but it can reduce eye fatigue. For example, when children play with electronic products, they can wear blue light glasses.
2). People who require color recognition
For example, people who use electronic product design are not suitable for wearing blue light glasses, because chromatic aberration will affect the judgment of color and will have a certain impact on work.
4. How To Choose Anti-Blue Light Glasses？
Mainly refer to blue light blocking rate, visible light transmittance, color difference
Blue Light Blocking Rate
The blue light blocking rate determines the ability to block blue light, but in fact, the blocking rate is not as high as possible. Wearing less than 30% does not make much sense.
Visible Light Transmittance
That is, the transmittance, the ability of light to pass through the lens. The greater the transmittance, the better the transmittance and the higher the clarity.
Color Difference
Anti-blue light lenses will turn yellow and cause chromatic aberration. If you are a designer and other people who have requirements for color resolution, it is not recommended to wear blue light glasses.
Post time: Jun-08-2022