Some blue light has a shorter wavelength than other colors of light, which means that it puts more strain on our eyes. It also reaches deeper into the eye, which slowly kills the cells in our retina. Not all types of blue light are bad for our eyes, but the kind that is emitted by LED lights of any kind (including all electronic screens as well as LED light-bulbs) is particularly harmful. The human eye is not very good at blocking this kind of light either, which means that there’s not really anything we can do naturally to stop the damaging effects of our electronic screens.

Why should you choose an anti-blue light tempered glass screen protector? 

Anti-blue light tempered glass screen protector is a development of screen protector for preventing the harm of the blue-ray. It is mainly effectively block the blue-ray through the absorption of blue light and transformation. It can prevent ocular damage, visual fatigue, blurred vision and glare caused by 380nm to 420nm high-energy short-wave blue light. It can protect your skin and prevent dry skin,Chloasma, and freckle caused by ultraviolet reflection.