Method and apparatus for universal improvement of vision

A - Human Necessities – 61 – B

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A61B 18/20 (2006.01)

Patent

CA 2644775

"Universal improvement" of vision is achieved by effectively changing the shape of the anterior refracting surface of the cornea to an ideal "turtleback" shape, on which is imposed the necessary curvature adjustment to achieve correction of distance vision. In accordance with one embodiment, the cornea is actually formed to the turtleback shape through corneal surgery, preferably laser ablation surgery. In accordance with a second embodiment, a contact lens with the desired distance corrected ideal turtleback shape on its anterior surface is positioned over the cornea.

L'invention concerne l'"amélioration universelle" de la vision, qui est obtenue par modification de la forme de la surface de réfraction antérieure de la cornée afin d'obtenir une forme de "carapace de tortue" idéale, sur laquelle l'ajustement de courbure nécessaire est effectué pour corriger la vision éloignée. Dans un mode de réalisation préféré de l'invention, la cornée est mise en forme de façon à obtenir la forme de carapace de tortue par opération chirurgicale de la cornée, de préférence par ablation laser. Dans un deuxième mode de réalisation, une lentille de contact présentant la forme de carapace de tortue idéale pour une vision éloignée corrigée désirée sur sa surface antérieure est positionnée sur la cornée.

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