Truncated diffractive intraocular lenses

Details Truncated diffractive intraocular lenses Truncated diffractive intraocular lenses

G - Physics

02

C

G02C 7/06 (2006.01) A61F 2/16 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2597376

In one aspect, the present invention provides a method of designing a diffractive ophthalmic lens (e.g., an intraocular lens (IOL)) that includes providing an optic having an anterior refractive surface and a posterior refractive surface, wherein the optic provides a far--focus power (e.g., in a range of about 18 to about 26 Diopters (D)). A truncated diffractive structure can be disposed on at least one of the surfaces for generating a near-focus add power (e.g., in a range of about 3 D to about 4 D). And the diffractive structure can be adjusted so as to obtain a desired distribution of optical energy between the near and far foci for a range of pupil sizes.

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