Saline solution for treating contact lenses

Drug – bio-affecting and body treating compositions – Designated organic nonactive ingredient containing other... – Solid synthetic organic polymer

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514839, 514912, 514915, 25217421, 252106, 252173, A61K 900

Patent

active

054949378

ABSTRACT:
Saline solutions useful in treating contact lenses are described. Unlike prior saline solutions used for similar purposes, the present solutions do not contain conventional antimicrobial agents which are potentially toxic to ocular tissues. Rather, the solutions contain a combination of a borate-polyol complex, one or more anionic or nonionic surfactants, and a low molecular weight amino acid (e.g., glycine). It has been found that this combination effectively preserves the saline solutions from antimicrobial contamination, is relatively nontoxic to ocular tissues, and is compatible with oxidizing agents used in certain contact lens disinfecting systems. The combination also facilitates the cleaning of contact lenses.

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Collin, et al., "The Effects of Na.sub.2 EDTA on Keratocytes and Endothelium of Isolated Guinea Pig Cornea", International Contact Lens Clinic, vol. 9, No. 5, pp. 281-287 (Sep./Oct. 1982).
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"ALLERGAN.RTM. HYDROCARE.RTM. Preserved Saline Solution", 1993 Physicians' Desk Reference For Ophthalmology, 21st Edition, C. Weisbecker, et al., Editorial Consultants, Medical Economics Data, Montvale, NJ, pp. 336-338.
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