Method of making a multizonal lens with enhanced performance

A method of making an intraocular lens, comprising:

• forming an anterior surface and an opposing posterior surface, the surfaces being disposed about an optical axis and providing an optic with a clear aperture;
• forming a central zone comprising a plurality of optical powers that progressively vary between a first optical power at a center of the central zone and a second optical power at a periphery of the central zone;
• and
• forming an intermediate zone extending from the periphery of the central zone and disposed between the central zone and an outer zone and with a smaller radial extent than either the central zone or outer zone, wherein at least one of the surfaces in the vicinity of the intermediate zone is comprised of a radial profile that smoothly blends the at least one surface of the central zone with the outer zone;
• forming the outer zone disposed about the central zone, the outer zone comprising a third optical power, the optic having a variation in optical power over the entire clear aperture that is less than about 1 Diopter,
• wherein the intermediate zone further functions as a transition zone, the radial profile of which is described by a polynomial and/or spline function configured to provide a continuously varying radius of curvature that smoothly blends the central zone with the outer zone, thereby minimizing abrupt optical power shifts and reducing visual artifacts such as halos and glare.