Accommodating intraocular lens and methods of use

Details Accommodating intraocular lens and methods of use Accommodating intraocular lens and methods of use

A - Human Necessities

61

F

A61F 2/16 (2006.01)

Patent

CA 2615825

An accommodating intraocular lens (10) , for use in an eye (40) , is made from flexible, optionally elastic, bio-compatible lens body material surrounding a closed and sealed lens cavity (30) which is filled with bio-compatible optical liquid (38) , optionally a gel. The optical liquid (38) has a refractive index sufficiently high to, in cooperation with the ciliary muscle (50) , focus light, incident on the eye, on the retina, and to provide accommodation. The curvature of the front surface of the lens (12) is deformable, by the pressure expressed by the ciliary body during the accommodative effort, thus to change the radius of curvature of the anterior body member (16) and/or the posterior body member (18) , thus providing smooth focusing, including from far distance in the relaxed state to near distance of less than 50 centimeters in the accommodative state .

L'invention concerne une lentille intranucléaire d'accommodation, destinée à être utilisée dans un oeil et dont le corps est fabriqué dans une matière de lentille biocompatible souple et éventuellement élastique, entourant une cavité pour lentille hermétique qui est remplie de liquide optique biocompatible, éventuellement un gel. Le liquide optique possède un indice de réfraction suffisamment élevé pour, conjointement avec le muscle ciliaire, concentrer la lumière, incidente sur l'oeil, sur la rétine, et pour assurer une accommodation. La courbure de la surface frontale de la lentille est déformable, par la pression exprimée par le corps ciliaire pendant l'effort d'accommodation, afin que le rayon de courbure des éléments de corps antérieur et/ou postérieur soit modifié et qu'une mise au point continue soit assurée, d'une distance éloignée à l'état relâché jusqu'à une distance proche de moins de 50 centimètres à l'état d'accommodation.

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