Diffractive-refractive lens

An intraocular lens comprising:

• an anterior surface;
• and
• a posterior surface defining a plurality of circular bands;
• wherein,
• each circular band, defined by the posterior surface, is offset from its adjacent circular band along a longitudinal axis of the intraocular lens, wherein a surface extends along the longitudinal axis between peripheries of adjacent circular bands;
• each of the circular bands comprises a curved surface having a radius of curvature, wherein the curved surface is generally parallel to a lateral axis of the intraocular lens to define a stepped configuration of the circular bands and not a serrated configuration;
• and
• in case of each of the circular bands defined by the posterior surface, longitudinal distance between an outer periphery of a circular band and the lateral axis of the intraocular lens is longer than longitudinal distance between an inner periphery of a circular band surrounding said circular band and the lateral axis, in such a way that, the posterior surface defines a generally inverted pyramid shape relative to the anterior surface, wherein the inverted pyramid comprises a base and a tip portion, wherein the base extends from an outer periphery of the anterior surface and the tip portion is disposed away from the anterior surface.