Multiple focal contact lens

Claim 1

In a contact lens structure having a concaveconvex shape with the concave surface being adapted to adhere to and float on the cornea and having a curvature substantially conforming to the cornea, at least that portion of the lens designed to be located over the pupil of the wearer when the lens is positioned on the eye being prescription ground to provide a distance vision correction for the wearer, an opaque region located in the central portion of the lens and defining an essentially circular pattern, the diameter of the opaque region being at least sufficient to provide for covering of at least said portion of the lens designed to be located over the pupil of the wearer, and a substantially unrestricted light transmitting opening defined in the center of said opaque region, the improvement comprising a plurality of light transmitting openings communicating with said central opening and extending outwardly from said central opening, said light transmitting openings being in the form of narrow slits extending radially from the central opening to thereby provide a plurality of wedge-shaped opaque portions, the respective junctures of the slits with said central opening being substantially equally spaced apart whereby said wedge-shaped portions are of substantially the same shape, and wherein the width of said slits is substantially smaller than the diameter of said central opening.