■ Cuts blue light by about 35% of the blue light from 380-495nm wavelengths with strong energy even in visible light rays and reaches the retina without absorbing the cornea or crystal.It is thought to be a cause of flickering, glare and eye fatigue.■ Bubble-proofing treatment: Bubbles are difficult to enter and remove easily, and even if air bubbles become trapped over time and will naturally fall out.Depending on the size of dirt and dust, there may be cases where it may remain.■ Anti-fingerprint and anti-stain treatment prevents fingerprints and smudges from sticking to it, and makes it easy to remove fingerprints and dirt.