Blue Light Filter and Anti-microbial Treatment Protects Your Screen Protector. InvisibleShield Glass Elite VisionGuard contains anti-microbial treatment that protects the screen protector by inhibiting the growth of odour-causing bacteria and guarding against degradation from microorganisms. Digital eye strain from prolonged exposure to device screens can cause premature eye aging, dry and irritated eyes, sleep disruption, and blurred vision. The protective Eyesafe® layer in Glass Elite VisionGuard filters harmful high-energy visible (HEV) light from your phone's screen. Eyesafe technology filters 40% of peak toxic blue light at 435-440nm, protecting from the effects of over exposure to high-energy blue light. The aluminosilicate glass used in Glass Elite undergoes an ion exchange tempering process which increases the surface tension of the glass making it stronger and more scratch-resistant. Glass Elite is our strongest glass screen protection ever. ClearPrint™ technology is a unique surface treatment—used exclusively by InvisibleShield—that hides the visibility of fingerprints on your screen protection. Developed by NBD Nanotechnologies, this oleophilic process spreads oils from fingerprints so thinly on the surface that it allows light to pass through the oil, making fingerprints virtually invisible. The reinforced edges on Glass Elite VisionGuard protect the vulnerable corners and edges of your screen to prevent chips and stop cracks from starting and spreading. Glass Elite VisionGuard has EZ Apply® tabs and comes with an installation tray to ensure accurate alignment