Patent ID: 6811257
Filing Date: 2004-11-02
Classification: G02C

Abstract:
A lens for use against the eye of a person comprising:a contact lens base defining a unitary molding of substantially circular configuration comprising a rear surface which is configured and adapted to be disposed in conformance with the central portion of the front of the eye of a person wearing said contact lens and wherein said contact lens base is shaped to correct the vision of the person wearing said lens; a sheet overlapping said contact lens base wherein said sheet comprises light absorbing material whereby a portion of light in the blue spectrum passing through said lens to the eye will be reduced; wherein said contact lens base comprises a circular central portion located so as to pass the light it receives through the pupil of the eye to the lens of the eye when said contact lens is operatively disposed against the eye of said person and wherein said central portion of said contact lens base comprises a light sensitive material wherein only said light sensitive material changes its light transmissivity when subjected to ambient light such as sunlight.