Enzyme compositions and methods for contact lens cleaning

C - Chemistry – Metallurgy – 11 – D

Patent

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Details

C11D 7/42 (2006.01) C11D 3/00 (2006.01) C11D 3/386 (2006.01) C11D 7/04 (2006.01) G02C 13/00 (2006.01)

Patent

CA 2165074

Enzyme compositions and methods employing enzyme compositions are disclosed which ale useful for cleaning contact lenses. In one embodiment, a composition in accordance with the present invention comprises an enzyme component effective when released in a liquid medium to remove debris from a contact lens located in the liquid medium; and an activity regulating component effective when released in the liquid medium to deactivate the enzyme component located in the liquid medium. This composition is preferably structured so that the enzyme component is released in the liquid medium before the activity regulating component is so released. The period of time between the release of the enzyme component and the activity regulating component is sufficient to allow the enzyme component to effectively remove debris from a contact lens which is introduced into the liquid medium before or at the same time the enzyme component is released in the liquid medium.

L'invention se rapporte à des compositions à base d'enzyme et aux procédés les employant pour le nettoyage des lentilles de contact. Dans un mode de réalisation, une composition selon la présente invention comprend un constituant à base d'enzyme agissant quand il est libéré dans un milieu liquide pour éliminer les résidus se trouvant sur une lentille de contact placée dans ledit milieu; cette composition comprend également un constituant régulateur d'activité agissant lorsqu'il est libéré dans le milieu liquide pour désactiver le constituant à base d'enzyme se trouvant dans ledit milieu. De préférence, la composition est structurée pour que le constituant à base d'enzyme soit libéré dans le milieu liquide avant le constituant régulateur d'activité. La période comprise entre la libération du constituant à base d'enzyme et celle du constituant régulateur d'activité est suffisante pour permettre à l'enzyme d'éliminer efficacement les résidus se trouvant sur une lentille plongée dans le milieu liquide avant la libération de l'enzyme dans ledit milieu, ou au même moment.

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