Intraocular lenses

A - Human Necessities – 61 – F

Patent

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Details

A61F 2/16 (2006.01) A61L 27/00 (2006.01)

Patent

CA 2379181

An accommodating intraocular lens (32) including an optic portion (34) having an outer peripheral edge (36) and two, three or four balanced haptic elements (40) for use to achieve multifocal refractive correction. Each haptic element (40) is formed to have less resistance to bending in a plane generally parallel to an eye's optical axis (OA-OA) than in a plane generally perpendicular to the eye's optical axis (OA-OA). The intraocular lens (32) is designed with specific flexibility characteristics so as to exhibit greater than approximately 1.0 mm axial displacement of the optic portion (34) along the eye's optical axis (OA-OA) under a compression force suitable to effect a 1.0 mm in diameter compression of the intraocular lens (32).

L'invention concerne une lentille intraoculaire (32) confortable qui comprend une partie optique (34) présentant un bord périphérique extérieur (36) et deux, trois ou quatre éléments haptiques (40) équilibrés permettant d'efffectuer une correction réfractive multifocale. Chaque élément haptique (40) est formé de façon à être moins résistant à la flexion sur un plan généralement parallèle à l'axe optique d'un oeil (OA-OA) plutôt que sur un plan généralement perpendiculaire à l'axe optique d'un oeil (OA-OA). La lentille intraoculaire (32) est dotée de caractéristiques de souplesse particulières qui autorisent un déplacement axial de la partie optique (34) supérieur à approximativement 1,0 mm, le long de l'axe optique de l'oeil (OA-OA), sous l'effet d'une force de compression suffisante pour exercer une compression de la lentille intraoculaire (32) de 1,0 mm diamètre.

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