Monochromatic style meets function with the Foster Grant® Corey Blue Light Antifog Readers. The antifog-coated lenses help resist water droplets from adhering, providing a clearer view.The lenses also help filter blue-violet light*, and are scratch and impact-resistant. The rectangle-shaped frames are made from gray plastic. These readers feature flexible spring hinges for a more comfortable fit.*Filters at least an average of 30% of blue-violet light (between 400 and 455nm as stated by ISO TR 20772:2018) as measured in 5 nm increments. Covered under U.S. Pat. No. 8,360,574. Other U.S. and foreign patents pending.