Abstract: The first contact lens is placed on the dominating eye and includes a central spherical area for distance vision, which is surrounded by an annular non-spherical area having a diopter in the form of progressive addition which varies from zero addition at the inner periphery to a maximum addition at the outer periphery, and which enables vision, at all distances including reading. The second contact lens is placed on the dominated eye. The central area is spherical and adjusted for reading. The non-spherical annular area has a progressive reduction from maximum addition to zero addition, which enables vision from reading to intermediate and distance vision. This system provides in most cases 95-100% vision at all distances.

Abstract: The lens includes on its front face a central spherical circular area surrounded by an annular aspherical area. Optionally the lens may include a second spherical annular area surrounding the first annular area. Another annular area which may be separated from the second annular area by a transition annular area, may complete the front face of the lens. The rear face may include a central circular spherical area which may be surrounded by a tangential annular area. A toric area may be centrally disposed on the rear face central area.