Floating phakic refractive lens design for preserving eye...

Details Floating phakic refractive lens design for preserving eye... Floating phakic refractive lens design for preserving eye...

A - Human Necessities

61

F

A61F 2/16 (2006.01) A61L 31/04 (2006.01)

Patent

CA 2382289

Phakic refractive lens (PRL) for correcting myopia or hyperropia are disclosed. The lens is implanted in the posterior chamber of the eye, with no permanent point of fixation, such that it floats between the patient's iris and natural lens. The lens corrects refractive errors in the eye, while maintaining the fluid dynamics of the eye and not causing stress or damage to eye structures. The lenses are made from a flexible material (such as those having a hardness of from about 20 to about 50 Shore A), having a specific gravity of from about 0.9 to about 1.2 g/cm3, and have a mass per unit area of from about 0.03 to about 0.30 mg/mm2. The method for using those lenses and surgical kits including those lenses are also disclosed.

L'invention porte sur des lentilles phakiques réfractrices corrigeant la myopie ou hypermétropie. Lesdites lentilles, qui s'implantent dans la chambre postérieure de l'oeil sans point permanent de fixation et flottent entre l'iris et la lentille naturelle, corrigent les anomalies de réfraction tout en maintenant la dynamique des fluides de l'oeil, et cela sans produire de contraintes ni de dommages aux structures de l'oeil. Ces lentilles, faites d'un matériau souple (par exemple d'une dureté Shore A comprise entre environ 20 et environ 50), ont une densité comprise entre environ 0,9 et environ 50 1,2 g/cm<3>, et une masse par unité de surface comprise entre environ 0,03 et environ 0,30 mg/mm<2>. L'invention porte également sur un procédé d'utilisation desdites lentilles et sur une trousse chirurgicale les comprenant.

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