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 60% of peak toxic blue light at 435-440nm, protecting from the effects of over exposure to high-energy blue light. This filtration tempered glass is 5X stronger than traditional screen protection and more scratch-resistant. 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. Glass Elite VisionGuard has EZ Apply® tabs and comes with an installation tray to ensure accurate alignment.