Generalized presbyopic correction methodology

A system for determining an optimal power profile for an eye, comprising:

• an adjustable vergence component including a displayable focusing target;
• an adaptive optics phoropter including an ophthalmic wavefront sensor that measures aberrations in the eye and including an adaptive optics wavefront corrector that generates a plurality of power profiles that blur the focusing target equivalently to an ophthalmic lens with corrections for the aberrations and with an added power zone according to the power profiles;
• and
• a control system operable to adjust a vergence of the focusing target between a plurality of vergence settings and to adjust the adaptive optics wavefront corrector for each of the power profiles so that subjective visual performance of the eye can be assessed for each of the power profiles at each of the vergence settings in an iterative fashion until the optimal one of the power profiles is determined.

A method of determining a resultant refractive surface, comprising:

• (a) determining a non-axi-symmetrical base refractive surface with correction for aberrations;
• (b) defining a plurality of radial and azimuthal meridians on the base surface;
• and
• (c) along each meridian, superimposing an axi-symmetrical power zone onto the non-axi-symmetrical base refractive surface to generate a resultant surface.