Phosphine-containing hydrogel contact lenses
First Claim
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1. A method of manufacturing a hydrogel contact lens, comprising:
- providing a polymerizable composition comprising(a) at least one hydrophilic monomer, and(b) at least one phosphine-containing compound, wherein the at least one phosphine-containing compound is present in an unoxidized form at the time it is combined with the at least one hydrophilic monomer in the polymerizable composition, and(c) at least one thermal initiator, wherein (b) and (c) are different from each other; and
(d) thermally curing the polymerizable composition to form a polymeric lens body.
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Abstract
Hydrogel contact lenses that are derived from a polymerizable composition including at least one hydrophilic monomer and at least one phosphine-containing component are described. The hydrogel of the contact lenses can be a silicone hydrogel or a non-silicone hydrogel. Use of polymerizable compositions comprising a phosphine-containing component can be cured under both inert and air atmospheres, and can be used to form hydrogel contact lenses having improved shape retention properties, having improved resistance to discoloration. Batches of hydrogel contact lenses and methods of making hydrogel contact lenses are also described.
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Citations
30 Claims
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1. A method of manufacturing a hydrogel contact lens, comprising:
providing a polymerizable composition comprising (a) at least one hydrophilic monomer, and (b) at least one phosphine-containing compound, wherein the at least one phosphine-containing compound is present in an unoxidized form at the time it is combined with the at least one hydrophilic monomer in the polymerizable composition, and (c) at least one thermal initiator, wherein (b) and (c) are different from each other; and (d) thermally curing the polymerizable composition to form a polymeric lens body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 25, 26)
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17. A hydrogel contact lens, comprising:
a polymeric lens body that is the reaction product of a polymerizable composition, the polymerizable composition comprising (a) at least one hydrophilic monomer, and (b) at least one phosphine-containing compound, wherein the at least one phosphine-containing compound is present in an unoxidized form at the time it is combined with the at least one hydrophilic monomer in the polymerizable composition, and (c) at least one thermal initiator that is thermally activated, wherein (b) and (c) are different from each other. - View Dependent Claims (18, 19, 27)
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20. A hydrogel contact lens package, comprising:
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a polymeric lens body that is the reaction product of a polymerizable composition, the polymerizable composition comprising (a) at least one hydrophilic monomer, and (b) at least one phosphine-containing compound wherein the at least one phosphine-containing compound is present in an unoxidized form at the time it is combined with the at least one hydrophilic monomer in the polymerizable composition, and (c) at least one thermal initiator that is thermally activated, wherein (b) and (c) are different from each other; a packaging solution comprising a lens hydrating agent; and a contact lens package base member having a cavity configured to hold the contact lens body and the packaging solution, and a seal attached to the base member configured to maintain the contact lens and the packaging solution in a sterile condition for a duration of time equivalent to a room temperature shelf life of the contact lens. - View Dependent Claims (28)
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21. A hydrogel contact lens, comprising:
a polymeric lens body that is the reaction product of a polymerizable composition, the polymerizable composition comprising (a) at least one hydrophilic monomer, and (b) at least one phosphine-containing compound, wherein the at least one phosphine-containing compound is present in an unoxidized form at the time it is combined with the at least one hydrophilic monomer in the polymerizable composition and said at least one phosphine-containing compound is not an initiator, and (c) at least one thermal initiator. - View Dependent Claims (22, 23, 29)
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24. A hydrogel contact lens package, comprising:
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a polymeric lens body that is the reaction product of a polymerizable composition, the polymerizable composition comprising (a) at least one hydrophilic monomer, and (b) at least one phosphine-containing compound wherein the at least one phosphine-containing compound is present in an unoxidized form at the time it is combined with the at least one hydrophilic monomer in the polymerizable composition and said at least one phosphine-containing compound is not an initiator, and (c) at least one thermal initiator, wherein (b) and (c) are different from each other; a packaging solution comprising a lens hydrating agent; and a contact lens package base member having a cavity configured to hold the polymeric lens body and the packaging solution, and a seal attached to the base member configured to maintain the contact lens and the packaging solution in a sterile condition for a duration of time equivalent to a room temperature shelf life of the contact lens. - View Dependent Claims (30)
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Specification