... after the HCT( hard coated Tintable) process, the lens can get hard coating protect, and also still avaible for ... no matter light color or dark color. Make your lens life longer with color and Hard coating protect.2 ... , All of the UC lens can make the HCT process, Single vision, bifocal, ... the high effect of vision. Hard Coating tintable lens (CE, ISO9001, FDA, Factory Audit)