Contact lens comprising a violet tint

Details Contact lens comprising a violet tint Contact lens comprising a violet tint

G - Physics

02

C

G02C 7/04 (2006.01) G02C 7/10 (2006.01)

Patent

CA 2343061

Adding a small quantity of a violet colorant to a contact lens material provides a clear contact lens that has no apparent undesirable yellow tint such as caused by a UV-absorbing compound. Further, the violet colorant can also be used with a colored lens, in the absence of the handling tint, to mask any undesirable yellow tint, such as that produced by a UV-absorbing compound. The violet colorant will not unacceptably alter the modifying color of the colored lens.

L'adlonction d'une faible quantité d'une matière colorante violette à une matière pour lentilles de contact produit une lentille de contact incolore dépourvue de la teinte jaune apparente indésirable causée, par exemple, par un composé à absorbance UV. En outre, cette matière colorante violette peut s'utiliser également avec des lentilles colorées, en l'absence de la teinte de traitement, pour masquer toute teinte jaune indésirable causée, par exemple, par un composé à absorbance UV. Cette matière colorante violette n'altère pas de manière dommageable la couleur modificatrice des lentilles colorées.

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