Computer glasses blue light protective function is really matter?  What is blue light?

Blue light is a short-wave high-energy light having a wavelength between 400 nm and 480 nm.

The blue light in this wavelength will increase the amount of toxin in the macular area of the eye, which seriously threatens the health of our fundus.

Blu-ray-induced blind eye disease.

the current effective solution is to film screens or lenses.

Not all blue lights are harmful, what is really harmful is blue light having a wavelength within 400 to 440. For more information.

Types of anti-blue light lenses

1)       First one realizes the anti-blue light function through the film layer

2)       Second on is made by adding special materials to the lens during the production process. for more information.