Inorganic nanopartices to modify the viscosity and physical properties of ophthalmic and otic compositions
First Claim
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1. Use of inorganic nanoparticles to modify the viscosity or other physical properties of an ophthalmic or otic pharmaceutical composition.
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Abstract
The use of nanoparticles of inorganic materials (e.g., synthetic smectite clays) in ophthalmic and otic pharmaceutical nanoparticles are utilized to modify the rheological properties of the compositions, so as to enhance the viscosity, flow characteristics, lubricity or other characteristics of the compositions. The invention is particularly directed to the provision of lubricant compositions for the eye and ear, and to enhancement of the viscosity, shear thinning and lubricity of artificial tear compositions.
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10 Claims
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1. Use of inorganic nanoparticles to modify the viscosity or other physical properties of an ophthalmic or otic pharmaceutical composition.
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2. A method of lubricating an eye or ear, which comprises applying an ophthalmic composition containing a lubricating effective amount of inorganic nanoparticles to the eye or ear
- 3. An ophthalmic or otic pharmaceutical composition, comprising an amount of inorganic nanoparticles sufficient to modify the viscosity or other physical properties of the composition.
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