Abstract: An ophthalmic lens including a first zone located in a central portion of the ophthalmic lens such that a central axis intersects the center of the first zone. The first zone having a spherical posterior surface for correcting distance vision. The ophthalmic lens further includes a second zone, positioned about the periphery of the first zone, and having a posterior surface of revolution defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens. Additionally, the ophthalmic lens may include a third zone positioned about the periphery of the second zone, and having a spherical posterior surface for correcting near vision.

Abstract: Apparatus for perforating contact lenses, including a laser, a hollow motor driven shaft connected to a vacuum pump for centering and holding the contact lens under the laser beam, crank means for adjusting the vertical and horizontal position of the contact lens with respect to the laser beam and automatic means for rotating said lens under said beam synchronously with the energization of said laser to effect production of a plurality of holes on said lens.