摘要:
The present invention relates to ionic silicone hydrogel polymers displaying improved lysozyme uptake, low contact angle and reduced water soluble polymeric ammonium salt uptake.
摘要:
Various non-limiting embodiments of the present disclosure relate to ophthalmic devices comprising photochromic materials comprising a reactive substituent. For example, the present disclosure contemplates ophthalmic devices comprising photochromic materials, such as photochromic naphthopyrans and indeno-fused naphthopyrans having a reactive substituent comprising a reactive moiety linked to the photochromic naphthopyran by one or more linking groups. In certain non-limiting embodiments, the reactive moiety comprises a polymerizable moiety. In other non-limiting embodiments, the reactive moiety comprises a nucleophilic moiety. Other non-limiting embodiments of the present disclosure relate to methods of making the photochromic ophthalmic device, wherein the photochromic ophthalmic devices comprise the photochromic naphthopyrans described herein.
摘要:
A method for coating hydrogel and silicone hydrogel articles, and articles made by the method, are provided in which the coating is first applied to the molding surface in which an article-forming material will be cured to form the article. The method permits the thickness and uniformity of the coating to be more easily controlled than in known coating methods.
摘要:
The present invention relates to stabilized ophthalmic solutions comprising at least one peroxide. In one embodiment, the present invention relates to an ophthalmic solution comprising a pH between about 6 and about 8 and about 50 to about 1000 ppm hydrogen peroxide and about 0.005 wt % (50 ppm) to about 0.05 wt % (500 ppm) at least one salt of diethylenetriamine pentaacetic acid selected from the group consisting of calcium salts of diethylenetriamine pentaacetic acid, zinc salts of diethylenetriamine pentaacetic acid and mixed calcium/zinc salts of diethylenetriamine pentaacetic acid.The present invention further relates to a method for preserving ophthalmic solution comprising at least one peroxide.
摘要:
The present invention relates to a process comprising exposing a polymerizable mixture comprising at least one lens forming component, at least one thermal initiator, at least one photoinitiator and at least one photochromic compound to device forming conditions comprising heat and actinic radiation to form a photochromic ophthalmic device.
摘要:
The present invention relates to a process comprising the steps of reacting in the presence of an epoxide opening catalyst, a substituted epoxide, and preferably a silicone containing substituted epoxide with at least one carboxylic acid and at least one protecting agent to form a vicinal dialkyl ester or a vicinal disilyl ester.
摘要:
The present invention relates to a process comprising the steps of reacting in the presence of an epoxide opening catalyst, a substituted epoxide, and preferably a silicone containing substituted epoxide with at least one carboxylic acid and at least one protecting agent to form a vicinal dialkyl ester or a vicinal disilyl ester.
摘要:
The present invention relates to ophthalmic solutions and devices comprising at least one water soluble polymer having a molecular weight of at least about 500,000 Daltons and linear or branched polyether pendant groups having a molecular weight of at least about 300.
摘要:
The present invention relates to biomedical devices, and particularly contact lenses comprising a polymer having entangled therein at least one acyclic polyamide.