Contact lenses

G - Physics – 02 – C

Patent

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G02C 7/04 (2006.01)

Patent

CA 2526076

The present invention provides a contact lens having an orientation/stabilization and optionally translation feature that does not provide an prism optical distortion and can effectively maintain a predetermined orientation of the lens on an eye. Like a conventional lens ballast, the orientation feature of the invention works by weighing the lens at its lower half portion, causing it to come to an equilibrium on the eye. With such orientation feature, the optical zone of the anterior surface can be designed independently to provide an optimal visual performance.

La présente invention se rapporte à une lentille de contact possédant un élément caractéristique d'orientation/stabilisation et éventuellement de translation qui ne génère pas la distorsion optique d'un prisme et peut efficacement maintenir une orientation prédéterminée de la lentille sur un oeil. De la même manière qu'un ballast de lentille classique, l'élément caractéristique d'orientation de cette invention permet de rendre pesante la lentille au niveau de sa demi-partie inférieure, ce qui lui permet d'adopter une position d'équilibre sur l'oeil. Avec un tel élément caractéristique d'orientation, la zone optique de la surface antérieure peut être conçue indépendamment pour assurer des performances visuelles optimales.

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