| CPC A61F 9/00825 (2013.01) [G06T 7/344 (2017.01); A61F 2009/00872 (2013.01); A61F 2009/00878 (2013.01); G06T 2207/30041 (2013.01)] | 20 Claims |
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1. An ophthalmic device for treating an eye, comprising:
a laser source configured to generate a pulsed laser beam;
an application head, comprising a focusing optic configured to focus the pulsed laser beam in the eye, and a patient interface configured to affix the application head on the eye, the patient interface comprising a contact body that rests on the eye when the application head is affixed to the eye and that deforms the eye;
a circuit configured to store a three-dimensional treatment model of a three-dimensional treatment pattern to be processed in the eye, by cutting a three dimensional incision pattern in tissue of the eye or irradiating a three-dimensional irradiation pattern into the eye, and a reference point for positioning the three-dimensional treatment model in the eye, the three-dimensional treatment model and the reference point being determined and stored prior to affixing the application head on the eye;
a scanner system configured to direct the pulsed laser beam, in accordance with the three-dimensional treatment model, onto treatment targets of the three-dimensional treatment pattern to be processed in the eye; and
a measurement system configured to optically capture structures of the eye when the application head is affixed to the eye;
wherein the circuit is further configured:
to determine one or more reference structures on the basis of the structures optically captured by the measurement system when the application head is affixed to the eye, which reference structures are arranged in ring-shaped fashion about a center axis of the anterior chamber of the eye,
to determine, using the reference structures and the previously stored reference point, a displaced reference point when the application head is affixed to the eye and the eye is deformed by the contact body of the patient interface,
to position the three-dimensional treatment model with respect to the displaced reference point when the application head is affixed to the eye, and
to control the scanner system to direct the pulsed laser beam, when the application head is affixed to the eye, in accordance with the three-dimensional treatment model positioned with respect to the displaced reference point, onto the treatment targets of the three-dimensional treatment pattern to be processed in the eye.
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20. A method for treating an eye, comprising:
storing, in a circuit of an ophthalmic laser treatment device, a three-dimensional treatment model of a three-dimensional treatment pattern to be processed in the eye, by cutting a three dimensional incision pattern in tissue of the eye or irradiating a three-dimensional irradiation pattern into the eye, and a reference point for positioning the three-dimensional treatment model in the eye, the three-dimensional treatment model and the reference point being determined and stored prior to affixing on the eye an application head of the ophthalmic laser treatment device;
affixing the application head on the eye, by a patient interface of the ophthalmic laser treatment device, the patient interface comprising a contact body that rests on the eye when the application head is affixed to the eye and that deforms the eye;
capturing, by a measurement system of the ophthalmic laser treatment device, optically structures of the eye, when the application head is affixed to the eye;
determining, by a circuit of the ophthalmic laser treatment device, one or more reference structures on the basis of the structures optically captured by the measurement system when the application head is affixed to the eye, which reference structures are arranged in essentially-ring-shaped fashion about a center axis of the anterior chamber of the eye;
determining, by the circuit of the ophthalmic laser treatment device, a displaced reference point when the application head is affixed to the eye and the eye is deformed by the contact body of the patient interface, using the reference structures and the previously stored reference point;
positioning, by the circuit of the ophthalmic laser treatment device, the three-dimensional treatment model with respect to the displaced reference point when the application head is affixed to the eye; and
controlling, by the circuit of the ophthalmic laser treatment device, a scanner system to direct a pulsed laser beam, when the application head is affixed to the eye, in accordance with the three-dimensional treatment model positioned with respect to the displaced reference point, onto the treatment targets of the three-dimensional treatment pattern to be processed in the eye.
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