Fiara Anti Blue Light Screen Filter/Protector | Fits 19" inch (16:9) LED/LCD Monitor W435 x H290mm; HEV Blue Light Protection is PROVEN/VERIFIED to protect eye vision by INNOVATION PATENT AUSTRALIA Emphasizing in prevention of ACTUAL artificial harmful blue-light from 420nm ~ 460nm generated from most electronic LCD/LED monitors, Not like other general/similar products described in the wavelength of 380nm~480nm with average ONLY! There are less critical harmful blue-light source can be found in 380nm ~ 400nm. Prevent eye diseases, such as early development of Myopia (Children), Presbyopia (Blurry vision), Computer Vision Syndrome (CVS), Dry Eye, Red eye syndrome, and Eye fatigue; Significantly reduce your risk to severe eye diseases that lead to total blindness, eg Cataract and Age-Related Macular Degeneration (AMD); Reduction in harmful blue-light exposure will enhance sleeping quality and increase work productivity; & Maintain high quality images. The majority of color is well preserved for your visual sensation, intensity of images are also enhanced.