Small intracorneal lens

Claim 1

An intracorneal lens for implant within the stromal tissue of the cornea, comprising: a. a circular central region constructed to provide a first optical focality in combination with the cornea; b. a circular surrounding region concentric with said circular central region and constructed to provide a second optical focality in combination with the cornea; c. said circular surrounding region being joined with said circular central region at a circular transition region; d. said circular central region having a diameter of 1.0 to 2.5 mm, an outer surface, an inner surface, and a thickness between said outer surface and said inner surface, said outer surface and said inner surface each having a configuration selected from the group of configurations consisting of concave, convex and planar; e. said circular surrounding region having an outside diameter which is greater than the diameter of said circular central region but not more than 4.5 mm, a convex outer surface, a concave inner surface, a peripheral edge, a constant thickness portion between said convex outer surface and said concave inner surface which extends from said circular transition region to a location closely adjacent to said peripheral edge, and a tapering thickness portion between said convex outer surface and said concave inner surface which extends from said location closely adjacent to said peripheral edge to said peripheral edge; f. said thickness of said circular central region being thinner than said constant thickness portion of said circular surrounding region; and, g. said intracorneal lens being shaped, sized and configured to be implanted within the stromal tissue of the cornea.