Patent ID: 7866815
Filing Date: 2011-01-11
Classification: G02C

Abstract:
1. A contact lens designed to provide only a single dioptric power when not engaged or contacting the eyelids of the user and being formed of a rigid gas permeable material and having a posterior curvature surface made to fit the predetermined corneal surface of a specific eye with the anterior portion of the said contact lens comprising a central optic zone that provides a single dioptric power when the lens is not engaging or contacting the eyelids of the user and is of solid material; the mid peripheral to peripheral portion of the anterior of the said lens being modified so as to allow the upper and lower eyelids to engage or contact the lens in order to change its shape or position on the eye when attempting to accommodate or focus by having the eyelids apply pressure on the lens effectively squeezing or lifting the lens away from the surface of the eye and thereby providing additional dioptric power to the eye either in the changed shape of the lens by said squeezing and/or position of the lens by said lifting or the changed shape of the tear film layer beneath the lens or by changes in both the shape of the lens by said squeezing and/or position of the lens by said lifting and the changed shape of the tear film layer beneath the lens and upon release of the said lens by relaxing the eyelids, the lens reverts back to its original form and dioptric power or to its original position on the eye.