G - Physics – 02 – C
Patent
G - Physics
02
C
G02C 7/02 (2006.01) A61B 3/04 (2006.01) A61B 3/12 (2006.01) G02C 7/04 (2006.01)
Patent
CA 2568061
A method of designing a contact lens or other correction for providing presbyopia correction to a patient relies on wavefront aberration measurement data for providing a best form correction. Preferably the correction is in the form of a multifocal translating style alternating vision contact lens or a simultaneous vision style correcting lens. A method for designing a correction for improving a person's vision is directed to correcting higher order aberrations in such a manner that a residual amount of the higher-order rotationally symmetric aberration is greater than a residual amount of the higher-order rotationally asymmetric aberration after the correction. A design method according to the invention is directed to correcting asymmetric higher order aberrations induced by decentering of a multifocal contact lens that has residual spherical aberration which provides increased depth of field.
Bausch & Lomb Incorporated
Osler Hoskin & Harcourt Llp
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