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Ophthalmic pharmaceutical compositions and methods of making and using same

  • US 9,278,132 B2
  • Filed: 01/11/2013
  • Issued: 03/08/2016
  • Est. Priority Date: 02/13/2012
  • Status: Active Grant
First Claim
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1. An ophthalmic pharmaceutical composition comprising an oil-in-water emulsion that comprises:

  • (a) a first polymer comprising a polymer or copolymer of carboxyvinyl monomers;

    the first polymer being present at a concentration in the range from about 0.01 to about 1 percent by weight of the composition;

    (b) a second polymer comprising a polyanionic polysaccharide selected from the group consisting of alginic acid, hyaluronic acid, salts of alginic acid or hyaluronic acid, and glucuronoxylomannan extracted from Tremella fuciformis mushroom;

    the second polymer being present at a concentration in the range from about 0.01 to about 1 percent by weight of the composition;

    (c) a caprylic acid/capric acid medium-chain triglyceride present at a concentration in the range from about 0.01 to about 1 percent by weight of the composition;

    (d) a non-ionic surfactant present at a concentration in the range from about 0.01 to about 1 percent by weight of the composition; and

    (e) water;

    wherein the emulsion is stable on storage but breaks up into separate aqueous and oil phases when diluted with simulated tear or subjected to shear stress; and

    wherein the composition has a viscosity in the range from about 2 to about 1000 cP.

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