The damage of blue light to the eyes is unknowing and silent. Although your eyes doesn’t feel uncomfortable, after using electronic device for a long time, the macular area of the eye is stimulated by blue light for a long time.

Most people will have dry eyes, astringent eyes, and visual fatigue, and more severe people will have vision loss , blurred vision, eye cancer, or blindness.

What’s more, the damage caused by the harmful blue light is irreversible. It is not like the cornea or the lens can be transplanted or replaced, the damage caused by blue light cannot be recovered by surgery or treatment.

If you use electronic devices regularly, it is recommended that you wear blue light blocking glasses to protect your eyes.

High-energy short-wave blue light has a wavelength of 450 nm and can penetrate the lens of the human eye directly to the macular area. The lens of children is not fully developed, so the absorption of blue light can reach 80% to 90%.

The data survey points out that more than 23% of children currently start exposure to electronic products before the age of 2, and up to 67% of preschool children have used electronic products to learn, watch animations or play games.

This is why blue light blocking glasses are important for the growth of modern children.

The wavelength range of visible light is about 380-780 nm, people divide it into seven colors: red, orange, yellow, green, cyan, blue, and purple.

The wavelength range of blue light is about 400-500 nm, but not all blue light is harmful to our eyes.

The harmful blue light is about 450 nm emitted by LED digital display products such as computers, mobile phones, and IPAD, which we should focus on its prevention and blocking. Some low-energy blue light also protects the eyes, such as suppressing the eyeball grows or prevent the formation of myopia.

PERFECTSIGHT blue light blocking glasses can filter 55%-70% harmful blue light of 450 nm. The “transparent anti-blue light glasses” or “light yellow anti-blue light glasses” on the market block purple light, not harmful blue light from electronic devices.

In addition, the “dark yellow anti-blue light glasses” blocks 450nm harmful blue light, but due to large chromatic aberration, screen color distortion, eyes will feel discomfort after long-term wear. If children wear this kind of dark yellow glasses for a long time, there may be hidden risk for color weakness.

PERFECTSIGHT blue light blocking glasses reduce the screen chromatic aberration ratio as much as possible, keep the picture undistorted, increase the transmittance, and wear comfortably while filtering the harmful  blue light.