Accommodative iol with dynamic spherical aberration

A - Human Necessities – 61 – F

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A61F 2/16 (2006.01)

Patent

CA 2712827

The present invention is generally directed to accommodative intraocular lenses (10, 18) that exhibit a dynamic spherical aberration as a function of accommodative power. By way of example, in one aspect, the present invention provides an intraocular lens (10) having an anterior optical element (12), a posterior optical element (14), and a mechanism (16) for coupling the anterior and posterior elements so as to allow axial movement of those elements relative to one another for providing accommodation when the lens is implanted in a patient's eye. Each of the anterior and the posterior elements includes at least one aspherical surface, where the asphericities of the surfaces are adapted to provide a combined spherical aberration that varies with accommodation.

La présente invention concerne, de manière générale, des lentilles intraoculaires (IOL) accommodatives qui présentent une aberration sphérique dynamique en fonction du pouvoir d'accommodation. A titre d'exemple, selon un aspect, la présente invention concerne une lentille intraoculaire (IOL) comportant un élément optique antérieur, un élément optique postérieur, et un mécanisme pour coupler les éléments optiques antérieur et postérieur de manière à permettre le mouvement axial de ces éléments l'un par rapport à l'autre et à permettre l'accommodation quand la lentille est implantée dans l'il d'un patient. Chacun des éléments antérieur et postérieur comprend au moins une surface asphérique, les asphéricités des surfaces étant adaptées pour créer une aberration sphérique combinée qui varie en fonction de l'accommodation.

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