Device and method for changing an implanted lens
OwnerMark Bischoff, Michael Kempe +2inventors
InventorsMark Bischoff, Michael Kempe, Markus Strehle, Walter Wrobel
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Abstract
A device for altering an optical and/or mechanical property of a lens that is implanted in an eye, the device including a laser device, which has a laser beam source that provides a pulsed laser beam and an optical unit, which impinges on the implanted lens with the pulsed laser beam. The device also includes a control device, which controls the laser device such that the optical and/or mechanical property of the lens is altered on the basis of non-linear interaction between the laser beam and the lens material.
Claims21
(canceled)
A method for changing an optical property of an intraocular lens implanted into an eye, said method comprising:
- measuring a deviation of at least one optical property of the implanted intraocular lens from a predetermined value;
- determining a required change of the optical property of the implanted intraocular lens to reduce the measured deviation,
- applying pulsed laser radiation to the implanted intraocular lens, said radiation being applied such that the required change of the optical property is caused by nonlinear interaction between the pulsed laser radiation and material of the implanted intraocular lens;
- and
- applying the pulsed laser radiation at a power density at which two photon or multiple photon absorption occurs in the material of the implanted intraocular lens and below a threshold above which optical breakthroughs appear in the material of the implanted intraocular lens.
A device for changing an optical property of an intraocular lens implanted into an eye, said device comprising:
- a laser device including a laser radiation source providing pulsed laser radiation and an optical unit applying said pulsed laser radiation to the implanted intraocular lens, as well as a control device, which controls the laser device such that a change of the optical lens property is effected due to a nonlinear interaction between the laser radiation and the material of the lens;
- and
- wherein the control device controls the laser device to apply the pulsed laser radiation at a power density at which two photon or multiple photon absorption occurs in the material of the implanted intraocular lens and below a threshold above which optical breakthroughs appear in the material of the implanted intraocular lens.
Dependencies are inferred from the claim text.