Use of carbon dioxide and carbonic acid to clean contact lenses
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United States of America Patent
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Jan 9, 2001
Grant Date -
N/A
app pub date -
Apr 22, 1999
filing date -
Feb 26, 1996
priority date (Note) -
Expired
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Abstract
Simple, efficacious, easily manufacturable, convenient to use and cost-effective contact lens care cleaning compositions comprising carbon dioxide and carbonic acid as cleansing agents are disclosed. The compositions do not require abrasive agents such as polymeric beads, nor ocularly irritating agents such as enzymes or surfactants in order to effectively clean proteinaceous and nonproteinaceous deposits from the surface of contact lenses. Also disclosed is a one-step cleaning and disinfecting regimen, whereby an effervescent tablet composition capable of generating carbon dioxide and carbonic acid is dissolved in a disinfecting solution or rinsing/disinfecting/storage solution.
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