Patent ID: 6874887

Claim:
A multifocal contact lens formed with two focusing zones positioned about a center point of the lens, the first optic zone formed in a center area of the lens providing a first power correction for distance vision, the second optic zone formed concentrically about and contiguous with the first optic zone, there being a junction between the first and second zones, said second zone providing a second power correction for near vision beginning at said junction and extending radially outward from said junction, the first power correction for distance vision positioned in a most central inner portion of the first optic zone, the first optic zone further comprising an outer portion contiguous with the inner portion and characterized by an increasing eccentricity that imparts a power gradient which increases the power up to the second power correction at said junction, wherein the power correction in the central inner portion of the first zone is relatively constant, as a function of distance from the center of the lens, in comparison to the power gradient throughout the outer portion of the first optic zone.