Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Bradford C. Webb0
Date of Patent
March 22, 2011
Patent Application Number
08870199
Date Filed
June 5, 1997
Patent Primary Examiner
Patent abstract
A viscoelastic composition for injection into a human eye comprised of about 2.0 to 2.5 percent of hydroxypropyl methylcellulose dissolved in a physiological salt solution, the composition, the composition having a viscosity from about 15,000 to about 40,000 centipoise and the hydroxypropyl methylcellulose having a molecular weight from about 220,000 to less than about 420,000 Daltons, the composition being free of debris or gels greater than 0.5 μm. Also described is a process for preparing the clean, high molecular weight hydroxy propylmethyl cellulose composition.
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