
Danyang 1.56 Optical Bifocal Lens with Blue O by Joythink. Advanced UV and HEV Protection: Filters harmful UVA, UVB, and blocks HEV light in 400nm-420nm range for superior eye safety. Blue Light Blocking Technology: Reduces eye strain and fatigue from electronic devices while improving sleep quality. High Transmittance Rate: Offers 98%-99% light transmittance for clear and bright vision. Anti-Scratch and Anti-Reflective: Features durable anti-scratch coating and anti-reflection properties for longevity. Comprehensive Eye Health Support: Helps prevent cataracts and age-related macular degeneration (AMD) with UV420-cut tech. Rigorous Quality Control: Undergoes strict inspections throughout production to ensure top-notch standards. Versatile Coating Options: Available with Hard Coating, Multi Coating, Uncoated, or EMI options.