System for stabilizing lacrimal fluid layer

Details System for stabilizing lacrimal fluid layer System for stabilizing lacrimal fluid layer

A - Human Necessities

61

K

A61K 31/785 (2006.01) A61K 9/00 (2006.01) A61K 9/08 (2006.01) A61K 31/717 (2006.01) A61K 31/79 (2006.01) A61K 47/32 (2006.01) A61P 27/02 (2006.01) G02B 13/00 (2006.01)

Patent

CA 2396524

It is aimed to eliminate the dryness and unpleasantness in the eyes of users of contact lenses and impart a favorable moist feel and pleasantness in using by stabilizing the lacrimal fluid layer on the eye surface of the users. By using an ophthalmic composition containing polyvinyl pyrrolidone, the lacrimal fluid layer around ionic contact lenses can be stabilized via the adsorption of polyvinyl pyrrolidone onto the ionic contact lenses. By adding a thickener to this ophthalmic composition, the lacrimal fluid layer can be maintained in a stable state over a long period of time.

L'invention concerne un système visant à éliminer la sensation de sécheresse et d'inconfort dans les yeux des porteurs de lentilles de contact et à produire une sensation d'humidité agréable lors du port des lentilles en stabilisant la couche de fluide lacrymal sur la surface des yeux des porteurs. L'utilisation d'une composition ophtalmique contenant de la polyvinyle pyrrolidone permet de stabiliser la couche de fluide lacrymal entourant les lentilles de contact ioniques au moyen de l'adsorption de la polyvinyle pyrrolidone sur les lentilles de contact ioniques. L'ajout d'un épaississant à ladite composition ophtalmique permet de maintenir la couche de fluide lacrymal dans un état stable sur une longue durée.

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