HD SPEX Diamond Vision Green Reading Ballistx lenses offer 100% UV protection from the suns harmful UV rays while harnessing our proprietary ColorTrast high definition lens technology; a vivid color enhancing and extreme contrast lens formulation with zero distortion. Our high definition Green Readers are specifically formulated to identify minor changes in contour by measuring changes in color and light. The ability to read minor changes in green contour is accomplished with a lens that infuses an extremely high level of contrast while intensifying color. Using eye protection in golf is both a necessity as well as a performance-enhancing tool. We have architected a range of lens light transmissions to offer the golfer specific technology for different lighting conditions. Both Plano and Prescription.