Blue Light and Eye Protection
This range of ultra-violet know as UV light increases the risk of developing cataract and macular degeneration. UV light is emitted by the sun, LEDs and computer screens. It has been shown that the band of light from 415 to 455 nm is potentially the most harmful to retinal cells. Spectacle treatments have been developed that will allow beneficial blue light to be transmitted while filtering the UV band that can contribute to macular degeneration and cataract. These lenses have been developed by Essilor and are called "Crizal Prevencia".