Crizal Prevencia

^{(1)Crizal Prevencia blocks 20% of the harmful Blue-Violet light, reducing retinal cell death by 25%. The Blue-Violet light cut may slightly differ depending on lens material. In vitro experiments conducted by Essilor and Paris Vision Institute,Retinal Pigment Epithelium cells were exposed to Blue-Violet light, reproducing the physiological exposure to sunlight of the 40-year-old human eye.(2) The E-SPF® index depends on the lens material itself and the coating. E-SPF® is a global index rating the overall UV protection of a lens. E-SPF® was developed by Essilor International and endorsed by 3rd party experts.Lens performance only. The E-SPF® index excludes direct eye exposure that depends on external factors (wearer’s morphology, frame shape, position of wear). E-SPF®=10 for Crizal® UV lenses with Essilor Orma 1.5®.(3) Crizal scratch guarantee, terms and conditions apply(4) Harmful light = UV and blue-violet light(5) The outer retina is composed of retinal pigment epithelium (RPE) cells plus the outer segments of visual photoreceptors. RPE is critical to the functioning, survival and constant renewal of photoreceptorsSunlight and the 10-year incidence of age-related maculopathy: The Beaver Dam Eye Study. Arch. Ophthalmol., 122, 750-757.New discoveries and therapies in retinal phototoxicity, Serge Picaud et Emilie Arnault, Points de Vue N°68, Spring 2013.}