Bifocal intraocular lens with spherical aberration correction

Details Bifocal intraocular lens with spherical aberration correction Bifocal intraocular lens with spherical aberration correction

A - Human Necessities

61

F

A61F 2/16 (2006.01)

Patent

CA 2107797

Intraocular lenses with three zones for the provision of bifocal vision are described. Methods for the lenses' use are also described. The three zones comprise a central zone (1) for the provision of distance vision, a second zone (2) surrounding the cen- tral zone for provision of near vision, and a third zone (3) surrounding the second zone for provision of distance vision. The radi- us of curvature of the third zone differs from that of the central zone such that images formed by the central and third zones are coincidental in aqueous. Such an arrangement corrects for spherical aberration.

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