Patent ID: 9046698
Filing Date: 2015-06-02
Classification: G02C

Abstract:
1. An ophthalmic device comprising: a contact lens requiring rotational stability on an eye, the contact lens having a front curve surface, a back curve surface, an optical zone and a peripheral stabilization zone configured to minimize on eye rotation; and a multifocus axis component incorporated into at least one of the front curve surface or the back curve surface of the contact lens in the optical zone and having a central disc which includes refractive spherical and cylindrical components at a nominal cylinder axis and a number of alternating concentric annular bands, wherein each band has a different cylindrical axis and which alternate to create a nominal axis meridian, a lower boundary meridian and an upper boundary meridian, wherein the range from the lower boundary meridian to the upper boundary meridian is between +/−5 degrees to +/−10 degrees.