摘要:
Sterilized aqueous solution comprising 0.04% to 0.8% by weight hyaluronic acid with a weight average molecular weight from 0.6 MDa to 3.6 MDa, and one or more buffer components selected from the group consisting of boric acid, sodium borate and sodium dihydrogen phosphate. The aqueous solution also has an ionic strength equivalent to an aqueous concentration of sodium chloride from 4% to 18% by weight of sodium chloride and a pH from 6.4 to 7.2. The solution is also filtered through a filter medium that has an average pore size of 0.25 μm or less to provide a sterilized high salt, hyaluronic acid solution.
摘要:
A process for sterilizing a solution comprising hyaluronic acid. The process comprises providing an aqueous solution of hyaluronic acid with a weight average molecular weight from 0.6 MDa to 3.6 MDa, and the concentration of the hyaluronic acid is from 0.04% to 0.8% by weight. The aqueous solution also has an ionic strength equivalent to an aqueous concentration of sodium chloride from 3% to 30% by weight. Once the aqueous, high salt, hyaluronic acid solution is prepared the solution is maintained at a temperature from 40° C. to 80° C. for at least 1 hour and not longer than six days. Following the heat treatment step, the aqueous solution is filtered through a sterilization filter medium to provide a sterilized high salt, hyaluronic acid solution.
摘要:
Sterilized aqueous solution comprising 0.04% to 0.8% by weight hyaluronic acid with a weight average molecular weight from 0.6 MDa to 3.6 MDa, and one or more buffer components selected from the group consisting of boric acid, sodium borate and sodium dihydrogen phosphate. The aqueous solution also has an ionic strength equivalent to an aqueous concentration of sodium chloride from 4% to 18% by weight of sodium chloride and a pH from 6.4 to 7.2. The solution is also filtered through a filter medium that has an average pore size of 0.25 μm or less to provide a sterilized high salt, hyaluronic acid solution.
摘要:
A process for sterilizing a solution comprising hyaluronic acid. The process comprises providing an aqueous solution of hyaluronic acid with a weight average molecular weight from 0.6 MDa to 3.6 MDa, and the concentration of the hyaluronic acid is from 0.04% to 0.8% by weight. The aqueous solution also has an ionic strength equivalent to an aqueous concentration of sodium chloride from 3% to 30% by weight. Once the aqueous, high salt, hyaluronic acid solution is prepared the solution is maintained at a temperature from 40° C. to 80° C. for at least 1 hour and not longer than six days. Following the heat treatment step, the aqueous solution is filtered through a sterilization filter medium to provide a sterilized high salt, hyaluronic acid solution.
摘要:
A method of making a disinfecting solution that is effective at disinfecting contact lenses. The method includes the step of combining water, one or more antimicrobial agents and a reduced amount of solid content into a dissolved liquid mixture. The process results in an improved disinfection efficacy compared to a reference solution.
摘要:
An ophthalmic composition comprising a polymeric biguanide composition having less than 18 mol % of terminal amine groups and 55 mol % or greater of terminal guanidine groups as measured by 13C NMR, and 0.005 w/v % to 0.04 w/v % hyaluronic acid. Alternatively, the ophthalmic composition comprises a polymeric biguanide composition comprising less than 18 mol % of terminal amine groups and 40 mol % or greater of terminal cyanoguanidino groups as measured by 13C NMR, and 0.005 w/v % to 0.04 w/v % hyaluronic acid. The compositions can be used for cleaning, disinfecting or packaging a contact lens.
摘要翻译:一种眼用组合物,其包含通过13 C NMR测量的具有小于18摩尔%的末端胺基和55摩尔%以上的末端胍基的聚合双胍组合物和0.005w / v%至0.04w / v%的透明质酸。 或者,眼用组合物包含聚合双胍组合物,其包含小于18mol%的末端胺基和40mol%或更大的末端氰基胍基,通过13 C NMR测量,和0.005w / v%至0.04w / v%透明质酸 。 该组合物可用于清洁,消毒或包装隐形眼镜。
摘要:
A contact lens care solution comprising: a cationic antimicrobial component having an average molecular weight (MNA), and a cationic oligomer or nitrogen/amine oligomer having a number average molecular weight (MNO) from 500 daltons to 15,000 daltons. The lens care solutions are used to clean and disinfect contact lenses, and in particular, soft, silicone hydrogel contact lenses.
摘要:
An ophthalmic treatment system comprises an ophthalmic treatment solution and a biguanide antimicrobial agent in solid form and in contact with said treatment solution such as to inhibit bacterial and/or fungal growth in said solution. The biguanide is partially or wholly terminated with an amine compound.
摘要:
The present invention is directed to a method of treating dry eye by instilling eyedrops of a composition containing a cationic cellulosic polymer. Such compositions have been found to alleviate the symptoms of dry eye without requiring the presence of anionic therapeutic agents. Low ionic strength solutions are particularly preferred.
摘要:
The present invention is directed to an ophthalmically safe disinfecting solution for contact lenses comprising the combination of a polymeric biguanide and a polyquaternium polymer of a substituted or unsubstituted vinylimidazole or its vinylimidazoliuum salt, which copolymer has a weight average molecular weight of 5,000 to 5,000,000. The invention is also directed to an improved method of disinfecting a contact lens.