Patent ID: 7497572

Claim:
A toric contact lens, comprising an optical axis, an anterior surface having a first optical zone, and an opposite posterior surface having a second optical zone, wherein one of the first optical zone or the second optical zone is a toroidal surface whereas the other zone is non-toroidal surface which is a spherical surface or an aspheric surface, wherein the toroidal and non-toroidal surfaces combine to provide a targeted cylindrical optical power and a targeted spherical optical power, wherein at least one of the first and second optical zone has an aspherical surface which is designed to provide, in combination with the surface of the other optical zone, a controlled optical power profile which is substantially rotationally-symmetric with respect to the optical axis or incorporates a spherical aberration component, wherein the spherical aberration component is described by any one of fourth order, sixth order, eighth order Zernike spherical aberration-like terms and has a spherical aberration value of from about −0.5 diopter to about −1.5 diopters at a distance of 3 mm from the optical axis.