With so many glass lens technologies out there designed to block out all sorts of light, where do you turn? Don’t worry; terms like photochromic and polarized may have stumped even Einstein! These words don’t have to be as near as confusing as they sound.In this article I will discuss the major technologies currently being employed on glasses and sunglasses everywhere. By learning exactly what these technologies do, you can decide on whether or not they are worth your money.Polarized Lenses – In.