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US 5,328,846 AGranted
Method for removing exogenous deposits from hydrophilic contact lenses
AssigneeThe Penn State Research Foundation
InventorFrederick C. Wedler
Life of this patent
Estimating the term…
Abstract
The present invention describes a method and composition for removing exogenous mucin and protein-mucin deposits from hydrophilic contact lenses.
Claims6
A method for removing mucin and mucin-containing deposits from a contact lens, which method comprises:
- providing a contact lens cleaning solution comprising a buffering agent, a mucin degrading enzyme and calcium ions in an amount sufficient to maintain said enzyme's stability, said mucin-degrading enzyme consisting of alpha-amylase from Bacillus licheniformis, in an effective amount sufficient to remove a mucin or mucin-containing deposit from a contact lens;
- placing a contact lens having a mucin or mucin-containing deposit in contact with said cleaning solution at or near room temperature;
- and
- allowing a sufficient period of time to elapse to allow for said removal.
1 more element
A method for removing mucin and mucin-containing deposits from a contact lens, which method comprises:
- providing a contact lens cleaning solution comprising a mucin-degrading enzyme composition consisting essentially of alpha-amylase from, Bacillus licheniformis, said alpha-amylase from Bacillus licheniformis present in an effective amount sufficient to remove a mucin or mucin-containing deposit from a contact lens, said contact lens cleaning solution further including a buffering agent and calcium ions in an amount sufficient to maintain enzyme stability;
- placing a contact lens having a mucin or mucin-containing deposit in contact with said cleaning solution at or near room temperature;
- and
- allowing a sufficient period of time to elapse to allow for said removal.
1 more element
Dependencies are inferred from the claim text.