Multi-focal contact lens has front multi-focal upper surface provided with multiple concentric spherical rings and rear surface attached at eye

摘要

The multi-focal contact lens has a front multi-focal upper surface provided with multiple concentric spherical rings and a rear surface attached at eye. A central area has different types of shades provided as outer area for contrast enhancement of remote image and close image. The central region and aspherical annular zone are tinted in different manner.