METHOD FOR MAKING UV-ABSORBING OPHTHALMIC LENSES
First Claim
Patent Images
1. A method for producing UV-absorbing contact lenses, comprising the steps of:
- obtaining an ophthalmic lens;
dipping the ophthalmic lens in a coating solution comprising a first organic solvent and a UV-absorbing polymer for a period of time sufficient to form a UV-absorbing coating on the ophthalmic lens, wherein the UV-absorbing polymer comprises UV-absorbing monomeric units and at least about 50% by mole of carboxyl-containing monomeric units; and
optionally covalently attaching a hydrophilic polymer or polymeric material having reactive functional groups onto the UV-absorbing coating to form a hydrogel coating, wherein the hydrogel coating is covalently attached onto the UV-absorbing coating through linkages each formed between one carboxylic group of the UV-absorbing coating and one reactive functional group of the hydrophilic polymer or polymeric material.
2 Assignments
0 Petitions
Accused Products
Abstract
Described herein is a cost-effective and time-efficient method for making UV-absorbing contact lenses. In contrast to the conventional method for making UV-absorbing contact lenses which involves copolymerizing a lens forming composition including a UV-absorbing vinylic monomer, a method of the invention involves dipping a contact lens in a solution of UV-absorbing polymer comprising carboxyl-containing monomeric units and UV-absorbing monomeric units to form a UV-absorbing coating on the contact lens.
-
Citations
16 Claims
-
1. A method for producing UV-absorbing contact lenses, comprising the steps of:
- obtaining an ophthalmic lens;
dipping the ophthalmic lens in a coating solution comprising a first organic solvent and a UV-absorbing polymer for a period of time sufficient to form a UV-absorbing coating on the ophthalmic lens, wherein the UV-absorbing polymer comprises UV-absorbing monomeric units and at least about 50% by mole of carboxyl-containing monomeric units; and optionally covalently attaching a hydrophilic polymer or polymeric material having reactive functional groups onto the UV-absorbing coating to form a hydrogel coating, wherein the hydrogel coating is covalently attached onto the UV-absorbing coating through linkages each formed between one carboxylic group of the UV-absorbing coating and one reactive functional group of the hydrophilic polymer or polymeric material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- obtaining an ophthalmic lens;
Specification