iPhone 5 Blue Light Filter Screen Protector for Apple iPhone 5, 5S, 5C - Reduce Eye Fatigue and Eye Strain [Retail Packaging] High-quality PET film with anti-blue light layer; Easy on and easy off; No residue left after removal Greater than 50% harmful light reduction without yellow tint Reduces eye stain from pupil contraction caused by blue light Helps prevent/minimize sleep disorders from nighttime viewing of iPhones Helps protect eyes from harmful light that causes retina damage and macular degeneration