Synthetic viscoelastic material for ophthalmic applications
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United States of America Patent
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Mar 22, 2011
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N/A
app pub date -
Jun 5, 1997
filing date -
Apr 30, 1993
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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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