Biocompatible polymeric compositions for use in making anterior chamber intraocular lenses
Biocompatible polymers useful for making anterior chamber intraocular lenses (AC-IOL) are provided. The biocompatible polymers are generally composed of one or more acrylate monomers, crosslinked with at least one diacrylate ester and may include one or more additional components such as ultraviolet light and/or blue-violet light absorbing dyes. The AC-IOLs made using the biocompatible polymers disclosed herein are suitable for placement in phakic or aphakic eyes and are intended for refractive correction including myopia, hyperopia, presbyopia and astigmatisms.
1. A biocompatible polymer comprising:
50 mass percent to 55 mass percent of a first alkyl acrylate,
29 mass percent to 32 mass percent of a second alkyl acrylate,
9 mass percent to 11 mass percent of a fluoroacrylate,
4 mass percent to 5 mass percent of a diacrylate ester crosslinking agent;
wherein said biocompatible polymer is used to form an anterior chamber intraocular lens (AC-IOL).
2. The biocompatible polymer according to clam 1 wherein said first alkyl acrylate and said second alkyl acrylate are selected from the group consisting of, ethyl methacrylate, n-butyl acrylate, ethyl acrylate and 2-ethyl hexyl acrylate, providing that said first acrylate ester is different than said second acrylate ester.
3. The biocompatible polymer according to claim 1 wherein said diacrylate ester crosslinking agent is selected from the group consisting of ethylene glycol dimethacrylate, propylene glycol dimethacrylate, ethylene glycol diacrylate and combinations thereof.
4. The biocompatible polymer according to claim 1 wherein said fluoroacrylate is selected from the group consisting of periluorooctal methacrylate, trifluoroethyl methacrylate and combinations thereof.
5. The biocompatible polymer according to claim 1 further comprising at least one ultraviolet (UV) light absorbing compound.
6. The biocompatible polymer according to claim 5 further comprising a blue-violet light absorbing compound.
7. The biocompatible polymer according to claim 2 where in said first alkyl acrylate is ethyl acrylate and said second alkyl acrylate is ethyl methacrylate.
8. The biocompatible polymer according to claim 3 wherein said diacrylate ester crosslinking agent is ethylene glycol dimethacrylate.
9. The biocompatible polymer according to claim 4 wherein said fluoroacrylate is trifluoroethyl methacrylate.
10. The biocompatible polymer according to claim 1 wherein said
first alkyl acrylate is present in a mass percent of approximately 54 mass percent,
said second alkyl acrylate is present in a mass percent of approximately 30 mass percent,
said fluoroacrylate is present in a mass percent of approximately 10 mass percent, and
said diacrylate ester crosslinking agent is present in a mass percent of approximately 5 mass percent;
wherein residual solvents and UV absorbing compounds make up the remaining mass percentage such the total mass percent is 100.
11. A biocompatible polymer comprising:
50 mass percent to 55 mass percent of ethyl acrylate,
29 mass percent to 32 mass percent of ethyl methacrylate,
9 mass percent to 11 mass percent of trifluoroethyl methacrylate,
4 mass percent to 5 mass percent of ethylene glycol dimethacrylate;
wherein said biocompatible polymer is used to form an anterior chamber intraocular lens (AC-IOL).
12. The biocompatible polymer according to claim 11 further comprising at least one ultraviolet (UV) light absorbing compound.
13. The biocompatible polymer according to claim 12 further comprising a blue-violet light absorbing compound.
14. The biocompatible polymer according to claim 11 wherein:
said ethyl acrylate is present in a mass percent of approximately 54 mass percent,
said ethyl methacrylate is present in a mass percent of approximately 30 mass percent,
said trifluoroethyl methacrylate is present in a mass percent of approximately 10 mass percent, and
ethylene glycol dimethacrylate is present in a mass percent of approximately 5 mass percent;
wherein residual solvents and UV absorbing compounds make up the remaining mass percentage such the total mass percent is 100.
15. An AC-IOL comprising:
54 mass percent of ethyl acrylate,
30 mass percent of ethyl methacrylate,
10 mass percent of trifluoro methacrylate, and
5 mass percent of glycol dimethacrylate;
wherein residual solvents and UV absorbing compounds make up the remaining mass percentage such the total mass percent is 100.
16. An AC-IOL consisting essentially of
54 mass percent of ethyl acrylate,
30 mass percent of ethyl methacrylate,
10 mass percent of trifluoro methacrylate, and
5 mass percent of glycol dimethacrylate;
wherein residual solvents and UV absorbing compounds make up the remaining mass percentage such the total mass percent is 100.
17. A biocompatible polymer consisting essentially of
54 mass percent of ethyl acrylate,
30 mass percent of ethyl methacrylate,
10 mass percent of trifluoro methacrylate, and
5 mass percent of glycol dimethacrylate;
wherein residual solvents and UV absorbing compounds make up the remaining mass percentage such the total mass percent is 100 mass percent;
and wherein said biocompatible polymer is used to form an anterior chamber intraocular lens.
18. A biocompatible polymer comprising 50 mass percent to 55 mass percent of a first alkyl acrylate, 29 mass percent to 32 mass percent of a second alkyl acrylate, 9 mass percent to 11 mass percent of a fluoroacrylate, and 4 mass percent to 5 mass percent of a diacrylate ester crosslinking agent; wherein said biocompatible polymer has a Tg of approximately 17° C., a tensile strength of approximately 1690 psi; an elongation at break of approximately 110% and is used to form an anterior chamber intraocular lens (AC-IOL).
19. The biocompatible polymer according to claim 18 wherein said AC-IOL has a refractive index of between approximately 1.40 and 1.50.
20. The biocompatible polymer according to claim 19 wherein said AC-IOL has a refractive index of approximately 1.41.