Self-centering phakic intraocular lens

Details Self-centering phakic intraocular lens Self-centering phakic intraocular lens

A - Human Necessities

61

F

A61F 2/16 (2006.01)

Patent

CA 2267185

The invention is a phakic intraocular lens (IOL) for the correction of visual disorders such as myopia, hyperopia, astigmatism and presbyopia. The lens is made from a biocompatible, elastomeric material such as silicone. The lens further includes one or more annular surfaces that protrude from the anterior surface of the lens or surround the lens such that when placed in the eye, it makes contact with the iris. As the iris dilates and constricts, the contact with the iris places a centering force on the implanted lens. The lens is not in contact with the natural lens of the eye and floats in the posterior chamber without insult or abrasion to surrounding tissue.

L'invention concerne une lentille intra-oculaire (LIO) phakique, qui est destinée à corriger des troubles de la vision, tels que la myopie, l'hypermétropie, l'astigmatisme et la presbytie. La lentille est constituée d'un matériau élastomère biocompatible, tel que du silicium. La lentille comprend une ou plusieurs surfaces annulaires qui sortent de la surface antérieure de la lentille ou qui entourent la lentille de sorte que, lorsque la lentille est placée sur l'oeil, elle vient au contact de l'iris. Lorsque l'iris se dilate ou se contracte, le contact avec l'iris exerce une force de centrage sur la lentille. La lentille ne touche pas le cristallin et flotte dans la chambre postérieure sans agresser le tissu qui l'entoure ni en provoquer l'abrasion.

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