... chosen4,Anti-fog,anti-scratch treatment 5, Clear lens safety glasses Product PerformanceSafety Glasses, Medical Glasses,Industry ... MaterialMetalLens MaterialPCFrame colorBlue,Black,Red,Orange,Yellow Etc.Lens ColorClear,Yellow,Orange,Welding,Red Etc.Frame Process ... and infrared rayf) Mercury layer: Protect against giddy light , intensity light and astigmatism Strongly9. Should be used in conjunction ...