Hi-Def Contrast Coppermax lens technology that provides unparalleled contrast & superior color enhancement by filtering specific colors in the visible light spectrum. In turn, this results in crisper color & sharper images while maintaining a natural non-distorted color balance. Our lens reduces distracting blue light that causes eye fatigue & eyestrain. They also cut through glare & haze for optimum visual clarity since light transmission is approximately 15%. The lenses feature 3 superb elements, which maximize the transmission of the colors your eyes see naturally. The result is visual acuity, contrast, and color that are unrivaled.