Annular mask contact lenses

摘要: An annular mask contact lens (10) designed to operate with the normal functioning of human pupil. (18) forms a small pinhole-like aperture (20) on enabling continual focus correction. The outer diameter allows wearer transmit more light energy through pupil as brightness levels decrease. may be structured two separate and distinct optical corrections, both at region in beyond mask. Functional imaging is thus achieved for bright dim lighting, over wide range viewing distances. Cosmetic peripheral vision enhancement also provided by constructed according invention.