Let's take a detailed look at what anti-blue light glasses are

In modern times, people spend more and more time using electronic devices, and these devices all emit blue light. The impact of long-term exposure to blue light on the eyes has long become a problem that the public needs to pay attention to. Therefore, anti-blue light glasses have become a popular solution in recent years and can effectively reduce the damage of blue light to the eyes. Let's take a detailed look together at what anti-blue light glasses are!

Why is anti-blue light needed? What is blue light and what are its hazards?

Blue light refers to a type of visible light with wavelengths ranging from 400 to 500 nanometers. Sunlight, artificial lights, display screens of electronic devices, LED lights, etc. all emit blue light. It has higher energy and intensity than ordinary visible light and can more easily penetrate the cornea and lens of the eye and enter the retina inside the eyeball, increasing eye fatigue and dryness, and even leading to eye diseases such as myopia and macular degeneration.

Key points for choosing anti-blue light glasses

I. Lens material and color

When choosing anti-blue light glasses, it is necessary to consider the color and material of the lenses. Lenses of different colors and materials have different uses and bring different feelings to the wearer. It is recommended that when purchasing anti-blue light glasses, in addition to choosing the shape you like, you can also understand the characteristics of the lens color and material.

The following is an introduction to the three common colors of Anti-blue light lenses:

• Transparent: Transparent lenses do not change the color of the screen, are more convenient to use, and can also provide good eye comfort.
• Yellow: Yellow lenses can filter out more blue light and ultraviolet rays, and also enhance color saturation, but they may cause a certain degree of color distortion.
• Brown: Brown lenses can reduce glare and enhance contrast, making them suitable for wearing in situations where distance judgment is required, such as driving or playing golf.

There are two common options for lens materials:

• Glass lenses: High hardness, not easy to scratch, and can be made into very thin lenses; But it is rather heavy to wear and also tends to cause a burden.
• Polycarbonate: It is lightweight, has an impact resistance 10 times higher than that of glass lenses, has a relatively high light transmittance, can be easily dyed into different grades, and can be coated with an anti-ultraviolet film. It is easier to manufacture than glass lenses.

II.Anti-blue light degree

In addition to choosing lenses that suit your needs, materials and colors, you should also consider the blue light blocking level of the lenses. It is recommended to choose products that have been tested for blue light filters and from reputable manufacturers. The following is a detailed description of the common anti-blue light lenses: dyed blue light filter lenses, coated blue light filter lenses and high-energy blue-violet filter lenses.

• Dyed blue light filter lenses: The blue light blocking level can be customized, and the blue light blocking level increases as the lens color becomes darker. However, the higher the blocking rate, the more obvious the yellowish color of the lens base.
• Coated blue light filter lenses: Produced by well-known overseas manufacturers, the blue light blocking level is about 20%, and the reflectivity is lower than that of ordinary blue light filter lenses.
• High-energy blue-violet filter lenses: It has been proven to effectively block light with a wavelength of 410 nanometers. According to the test report of Industrial Technology Research Institute, the blocking rate is as high as 89%, providing more effective protection than other blue light filter lenses on the market, and higher transparency.

Conclusion

Anti-blue light glasses are not only a fashion accessory, but also a must-have for protecting eye health. Therefore, when choosing, you need to pay attention to the brand and product quality to ensure effective protection of eye health.