Process for cleaning and disinfecting contact lenses

Details Process for cleaning and disinfecting contact lenses Process for cleaning and disinfecting contact lenses

C - Chemistry, Metallurgy

11

D

C11D 1/04 (2006.01) C11D 1/12 (2006.01) C11D 1/34 (2006.01) G02C 13/00 (2006.01)

Patent

CA 2257648

An improved process for removing protein deposits from contact lenses with a single solution is described. The process utilizes the cleaning effect of a cleaning agent in combination with the solvent action of water and physical agitation of the lens (i.e., by means of rubbing) to achieve a degree of cleaning which is comparable to or better than prior processes which utilize surfactant-cleaners. The cleaning agent is selected from polycarboxylates, polysulfonates and polyphosphates. The preferred cleaning agent is citrate. The process also offers greater convenience, relative to many prior systems for cleaning and disinfecting contact lenses, since the need to utilize additional products to clean the lenses is eliminated.

Divulgation d'un procédé amélioré pour éliminer les dépôts de protéines se trouvant sur des verres de contact, à l'aide d'une solution unique. Dans ce procédé, on utilise l'effet nettoyant d'un agent de nettoyage combiné à l'action dissolvante de l'eau et à une agitation physique des verres (p. ex., par frottage), afin d'obtenir un degré de propreté comparable ou supérieur à celui obtenu préalablement à l'aide de surfactants et d'agents de nettoyage. L'agent de nettoyage est choisi parmi les polycarboxylates, les polysulfonates et les polyphosphates. L'agent de nettoyage choisi de préférence est un citrate. Ce procédé est aussi plus pratique que beaucoup de systèmes de nettoyage et de désinfection des verres de contact utilisés jusqu'ici, car il élimine le besoin d'utiliser des produits additionnels pour le nettoyage des verres.

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