Patent ID: 6921168

Claim:
A translating contact lens having a central axis, an anterior surface and an opposite posterior surface having a first optical zone, the anterior surface comprising: a second optical zone having a top edge and a lower edge; a non-optical zone surrounding the second optical zone; and a lenticular zone which extends radially outward from the non-optical zone and tapers to a narrow end where the posterior and anterior surfaces meet each other, wherein the non-optical zone has a ramped ridge zone capable of controlling contact lens position on an eye in primary gaze or translating amount across the eye when the eye changes from gazing at an object at a distance to gazing at an object at an intermediate distance or to gazing at a nearby object, or both, wherein the ramped ridge zone is disposed below the second optical zone and includes an upper edge, a lower ramped edge, a latitudinal ridge that extends outwardly from the anterior surface, and a ramp that extends downwardly from the lower ramped edge to the lenticular zone, and wherein the ramp ensures a continuous transition from the lenticular zone to the latitudinal ridge and has a radius of curvature of between 0.1 to 1.0 mm.