System and method for irradiating an artificial lens
AssigneeAMO Development, LLC
InventorsMartin Schraub, Lars Dobelmann-Mara, Simon Helmstetter, David Moore, Stefan Riedmueller, Harald Guenther
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Abstract
The present invention generally relates to a system for two-photon or multi-photon irradiating an artificial lens, preferably an intraocular lens preferably arranged within an eye of a patient and a method for locally adjusting a polarizability and/or a refractive index of an artificial lens preferably an intraocular lens preferably arranged within an eye of a patient. The method relates in particular to fabrication of optical profiles by adjusting polarizability through two- or multi-photon processes in a non-destructive manner.
Claims19
An ophthalmic surgical system, the system comprising:
- an artificial lens;
- one or more irradiation sources for two-photon or multi-photon irradiating said artificial lens with an irradiation beam focused with an optic and of a first wavelength and/or a second wavelength different from the first wavelength,
- a scanner coupled to the one or more irradiation sources and configured to scan said irradiation beam across said artificial lens, and
- an input unit coupled to the one or more irradiation sources and the scanner, wherein the input unit is configured to input data for treating said artificial lens by scanning said irradiation beam across said artificial lens based on the input data, and
- wherein the first wavelength is between 600 nm and 800 nm and the artificial lens is configured to absorb the irradiation beam of the first wavelength via a two-photon or multi-photon absorption process and to locally decrease, as a result of said absorption process, a polarizability of irradiated portions of said artificial lens, and
- wherein the second wavelength is between 400 nm and 590 nm and the artificial lens is configured to absorb the irradiation beam of the second wavelength via a two-photon or multi-photon absorption process and to locally increase, as a result of said absorption process, the polarizability of irradiated portions of said artificial lens.
A process for adjusting a polarizability of an artificial lens comprising a body formed of a polymeric optical material based on a two- or multi-photon absorption process, the process comprising the steps of:
- providing said artificial lens;
- and
- adjusting the polarizability of said artificial lens through irradiation of said lens by using a system which comprises one or more irradiation sources generating a first and a second focused irradiation beam and a scanner configured to scan the first and second focused irrational beams across said artificial lens, thereupon changing the polymeric optical material with significant differences in a UV/Vis spectrum with respect to non-irradiated polymeric optical material of the artificial lens, the adjusting step including:
- irradiating a first portion of the artificial lens with the first irradiation beam having a first wavelength between 600 nm and 800 nm, wherein the artificial lens absorbs the first irradiation beam via the two- or multi-photon absorption process and locally decreases, as a result of the absorption process, a polarizability of the first portion of the artificial lens, and
- irradiating a second portion of the artificial lens with the second irradiation beam having a second wavelength between 400 nm and 590 nm, wherein the artificial lens absorbs the second irradiation beam via the two- or multi-photon absorption process and locally increases, as a result of the absorption process, a polarizability of the second portion of the artificial lens.
Dependencies are inferred from the claim text.