Sterilizing hydrophilic contact lenses

Details Sterilizing hydrophilic contact lenses Sterilizing hydrophilic contact lenses

1977-09-16

1982-01-26

Garris, Bradley

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using disinfecting or sterilizing substance

252187R, 2521883R, 422 37, 424 14, A61L 216, A61L 218, C09K 300

Patent

active

043128335

ABSTRACT:
A sterilizing solution for contact lenses particularly those formed of a hydrophilic polymer comprises (a) an alkali metal salt of formic acid, and (b) an iodophor selected from the group consisting of complexes of iodine with hydrophilic polymer and non-ionic surface active agent. The alkali metal salt and the iodophor are present in predetermined quantities such that the sterilizing solution contains sufficient alkali metal salt to reduce the available iodine level of the sterilizing solution to substantially zero within a period of from 30 minutes to 8 hours at a temperature of from 20.degree. to 25.degree. C. The iodophor and the alkali metal salt of formic acid may be packaged in solid or powdered form, particularly in unit doses, and made into solution at the point of use.

REFERENCES:
patent: 2134679 (1938-11-01), Allen
patent: 2668763 (1954-02-01), Rubinstein
patent: 2739922 (1956-03-01), Shelanski
patent: 3911107 (1975-10-01), Krezanoski
"Merck Index", 9th Ed., 1976, pp. 173 & 633.
Rose, "Condensed Chem. Dictionary", 7th Ed., 1966, pp. 863 & 864.

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