Intraocular lenses and methods for making same
First Claim
1. An intraocular lens comprising:
- an optic; and
at least one fixation member integral with and extending from said optic, said optic and said at least one fixation member being made from a compressed item having a compressed thickness, said compressed item comprising a polymer selected from the group consisting of methyl methacrylate homopolymers, methyl methacrylate-containing copolymers and mixtures thereof, said compressed item being derived by subjecting an item which comprises said polymer and which has a thickness to compression along a single axis substantially parallel to said thickness to reduce said thickness, provided that said at least one fixation member has a reverse bend strength of at least about 164 g.
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0 Petitions
Accused Products
Abstract
New intraocular lenses and methods for producing such lenses are disclosed. In one embodiment, the intraocular lens comprises an optic; and at least one fixation member, e.g., haptic, secured to and extending from the optic, the fixation member being made from a compressed item having a compressed thickness and comprising of a polymer selected from the group consisting of methyl methacrylate homopolymers, methyl methacrylate-containing copolymers and mixtures thereof, the compressed item being derived by subjecting an item having a thickness to compression, preferably along an axis substantially parallel to the thickness, to reduce the thickness, provided that the compressed item has increased tensile strength relative to the item and is substantially no less intraocular lens manufacturable than is the item.
39 Citations
19 Claims
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1. An intraocular lens comprising:
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an optic; and at least one fixation member integral with and extending from said optic, said optic and said at least one fixation member being made from a compressed item having a compressed thickness, said compressed item comprising a polymer selected from the group consisting of methyl methacrylate homopolymers, methyl methacrylate-containing copolymers and mixtures thereof, said compressed item being derived by subjecting an item which comprises said polymer and which has a thickness to compression along a single axis substantially parallel to said thickness to reduce said thickness, provided that said at least one fixation member has a reverse bend strength of at least about 164 g. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An intraocular lens comprising:
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an optic; and at least one fixation member integral with and extending from said optic, said at least one fixation member being made from a compressed item having a thickness, said compressed item comprising a polymer selected from the group consisting of methyl methacrylate homopolymers, methyl methacrylate-containing copolymers and mixtures thereof, said compressed item being derived by subjecting an item which comprises said polymer and which has a thickness to compression to reduce said thickness, provided that said at least one fixation member has a reverse bend strength which is increased by about 1250% or more relative to a fixation member made from an identical item which is not so subjected to compression. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An intraocular lens comprising:
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an optic; and two fixation members integral with and extending from said optic, each of said fixation members having a very small cross section and a free end away from said optic so that the overall size of said intraocular lens between said free ends of said fixation members is in the range of about 9 mm to about 14 mm, said optic and said fixation members being made from a single item having a thickness and comprising a polymer selected from the group consisting of methyl methacrylate homopolymers, methyl methacrylate-containing copolymers and mixtures thereof, said item being derived by subjecting an item which comprises said polymer and which has a thickness to compression to reduce said thickness, provided that each of said fixation members has a reverse bend strength of at least about 164 g. - View Dependent Claims (18, 19)
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Specification