Process for cleaning and disinfecting contact lenses

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

A - Human Necessities

61

L

A61L 2/18 (2006.01) A61L 12/08 (2006.01) A61L 12/14 (2006.01) C11D 3/00 (2006.01) C11D 3/20 (2006.01) C11D 3/37 (2006.01) C11D 3/48 (2006.01) C11D 7/16 (2006.01) C11D 7/26 (2006.01) C11D 7/32 (2006.01) C11D 7/34 (2006.01) G02B 13/00 (2006.01)

Patent

CA 2146860

An improved process for cleaning and disinfecting 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.

L'invention se rapporte à un procédé amélioré de nettoyage et de désinfection des lentilles de contact à l'aide d'une seule solution. Ce procédé utilise l'effet de nettoyage d'un agent de nettoyage combiné à l'effet solvant de l'eau et à l'agitation physique des lentilles (c'est-à-dire le frottement de celles-ci), ce qui permet d'obtenir un degré de nettoyage comparable ou supérieur à celui des procédés antérieurs, lesquels utilisent des nettoyants contenant des surfactants. L'agent de nettoyage est choisi parmi les polycarboxylates, les polysulfonates et les polyphosphates. L'agent de nettoyage préféré est le citrate. Ce procédé offre également une plus grande commodité par rapport à bien des systèmes antérieurs de nettoyage et de désinfection des lentilles de contact, puisqu'on a supprimé le besoin d'utiliser des produits additionnels pour nettoyer les lentilles.

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