Dioptics Sunwear, a subsidiary of FGX International began designing and distributing Advanced UV® Protection sunglasses, fits overs and clipons in 1979. Today, Dioptics is the frontrunner and largest distributor of fits over sunglasses and clipons in the world. Dioptics in-house engineering and product development teams endeavor to bring forward products that exceed customer expectations, with enhanced protection, comfort, style, affordability and performance.