Intraocular lenses

A - Human Necessities – 61 – F

Patent

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A61F 2/16 (2006.01)

Patent

CA 2388223

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

Lentille intraoculaire qui comporte une partie optique dotée d'un bord périphérique externe et de deux, trois ou quatre éléments haptiques équilibrés en forme de boucle et qui est utilisée pour obtenir une correction de réfraction. Chaque haptique en forme de boucle est conçu de manière à posséder une plus grande résistance à l'incurvation dans un plan généralement parallèle à l'axe optique de l'oeil que dans un plan généralement perpendiculaire à l'axe optique de l'oeil. Ladite lentille introaculaire est conçue avec des caractéristiques de souplesse spécifiques de manière à présenter moins d'environ 1,0 mm de déplacement axial de la partie optique le long de l'axe optique de l'oeil sous l'effet d'une force de compression suffisante pour provoquer une compression de 1,0 mm du diamètre de la lentille intraoculaire.

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