Compositions containing a stable, liquid, ophthalmically acceptable enzyme and methods involving the combined use of these compositions with a polymeric antimicrobial agent, and complexing agent are disclosed for the simultaneous cleaning and disinfecting of contact lens. Methods for a daily use regimen...http://www.google.ca/patents/US5604190?utm_source=gb-gplus-sharePatent US5604190 - Stable liquid enzyme compositions and methods of use in contact lens cleaning and disinfecting systems
