ANANK IPAD ANTI-BLUE LIGHT / ANTI-BLUE RAY WITH REINFORCED EDGE TECHNOLOGY SCREEN PROTECTOR, PROTECT YOUR EYES ALWAYS!FeaturesAnti-Bluelight glass, protect you and your kids eyes always. 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 ANTI-BLUE layer in Glass filters harmful high-energy visible (HEV) light from your phoneâÃôs screen.InstallationFast, Accurate, and Bubble-FreeWe believe installation should be as simple and accurate as possible, so we are constantly refining our processes with innovations technology and advanced adhesives.