Method and composition for reducing contact lens swelling
AssigneeBausch & Lomb Incorporated
InventorsZhenze Hu, Joseph C. Salamone, Dharmendra Jani
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Abstract
The present invention is directed to an ophthalmic solution for soft contact lenses for controlled release of polyethers into an eye's tear film. Polyether components of the subject solution are released from the soft contact lens material matrix over long time periods to produce longer lasting wetting performance, improved lubricity, improved end-of-the-day comfort and reduced feeling of dryness from wearing contact lenses. The present invention also includes the use of cationic polyelectrolytes for controlling the swelling of hydrogel contact lenses typically caused by the absorption of high concentrations of polyethers.
Claims18
A method of reducing swelling in a hydrogel contact lens comprising:
- contacting a hydrogel contact lens with a solution comprising a polyether comprising the combination of poloxamer 407 and poloxamine 1107 and polyquaternium-10 to absorb the solution into the hydrogel contact lens;
- and
- placing the contact lens into the eye, wherein the solution is released over a period of time from the contact lens and prevents swelling of the contact lens over said period of time.
Dependencies are inferred from the claim text.