# US 11,026,840 B2 · Ophthalmic surgery method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,026,840 B2 - Document ID: US11026840B2 - Status: Granted - Kind: B2 - Application number: 16/300,017 - Filed: 2017-05-09 - Published: 2019-05-16 - Granted: 2021-06-08 - Earliest claimed: 2016-05-10 - Assignees: Carl Zeiss Meditec AG - Applicants: Carl Zeiss Meditec AG - Inventors: Johannes Kindt; Manfred Dick; Mark Bischoff - Web page: https://patentgrep.com/patent/US11026840B2 ## CPC - A61F 9/00827: {Refractive correction, e.g. lenticle} - A61F 9/00836: {Flap cutting} - G16H 20/40: relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture - G16H 40/63: for local operation - A61F 2009/00842: {Permanent Structural Change [PSC] in index of refraction; Limit between ablation and plasma ignition} - A61F 2009/00872: {Cornea} - A61F 2009/00878: {Planning} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - G16H: HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA ## Abstract A planning device for generating control data for a treatment apparatus which by means of a laser device produces at least one incision surface in the cornea, and to a treatment apparatus having such a planning device. The invention further relates to a method for generating control data for a treatment apparatus which by using a laser device produces at least one incision surface in the cornea, and to a corresponding ophthalmic surgery method. The planning device is thereby provided with calculation means for defining the corneal incision surfaces, wherein the calculation means determine the corneal incision surfaces on the basis of data of a LIRIC structure and/or a refractive correction, and generate for the corneal incision surfaces a control data set for controlling the laser device, wherein the calculation means determine the corneal incision surfaces in such a manner that the LIRIC structure is enclosed by the incision surfaces. ## Claims ### Claim 1 A treatment apparatus for eye surgery, comprising: a laser device which produces at least one cut surface in the cornea by use of laser radiation in accordance with control data, and a planning device for producing the control data, wherein the planning device comprises a computer configured to determine the at least one corneal cut surface on the basis of data of a laser induced refractive index change (LIRIC) structure, and, for the at least one corneal cut surface, produce a control data record for use in treating an eye of a Patient by actuating the laser device to produce the at least one corneal cut surface by making laser cuts on the eye based on the control data, and wherein the computer is configured to determine the treatment of at least one corneal cut surface in such a way that the LIRIC structure is enclosed by the at least one cut surface, and the planning device is further configured to receive the data of the LIRIC structure and to transmit control data of the control data record to the laser device to enable the laser device to treat the eye by producing the at least one corneal cut surface that encloses the LIRIC structure when actuated. ### Claim 2 (depends on 1) The treatment apparatus as claimed in claim 1, wherein the at least one corneal cut surface isolates a lenticule which encloses the LIRIC structure. ### Claim 3 (depends on 1) The treatment apparatus as claimed in claim 1, wherein the at least one cut surface in the cornea isolates a lenticule which contains the LIRIC structure. ### Claim 4 (depends on 1) The treatment apparatus of claim 1, wherein the at least one corneal cut surface includes at least one of a cap cut and a lenticular cut. ### Claim 5 (depends on 1) The treatment apparatus of claim 1, wherein the planning device is further configured to transmit control data of the control data record to the laser device via a controller in communication with the planning device and the laser device. ### Claim 6 A method for treating an eye by producing and communicating control data for a treatment apparatus for eye surgery, which produces cut surfaces in the cornea by means of a laser device, the method comprising the following steps: receiving corneal data on the basis of data of a laser induced refractive index change (LIRIC) structure at a planning device; determining the corneal cut surfaces, the corneal cut surfaces determined in such a way that the LIRIC structure is enclosed by the cut surfaces; producing a control data record for use in treating an eye of a Patient by actuating the laser device to produce the corneal cut surfaces by making laser cuts on the eye based on the control data transmitting control data of the control data record to the laser device so as to enable the laser device to treat the eye by producing the corneal cut surfaces that enclose the LIRIC structure when actuated; and producing the cut surfaces by actuating the laser device with the control data record. ### Claim 7 (depends on 6) The method as claimed in claim 6, wherein the corneal cut surfaces isolate a lenticule which contains the LIRIC structure. ### Claim 8 (depends on 6) A non-transitory, tangible computer-readable storage medium storing computer program code, which, when executed on a computer, executes the method as claimed in claim 6. ### Claim 9 (depends on 6) The method of claim 6, wherein transmitting control data of the control data record for use by the laser device comprises transmitting control data of the control data record to the laser device via a controller in communication with the planning device and the laser device. ### Claim 10 A method for eye surgery, wherein cut surfaces are produced in the cornea through the use of a treatment apparatus with a laser device, the method comprising the following steps: providing corneal data on the basis of the data of a laser induced refractive index change (LIRIC) structure; setting the corneal cut surfaces, the corneal cut surfaces comprising at least a lenticular cut and a cap cut, on the basis of the corneal data; producing a control data record for the corneal cut surfaces; transmitting the control data to the treatment apparatus; and producing the cut surfaces by actuating the laser device with the control data record; wherein the corneal cut a surfaces are determined in such a way that the LIRIC structure is enclosed by the cut surfaces. ### Claim 11 (depends on 10) The method as claimed in claim 10, wherein the corneal cut surfaces isolate a lenticule which contains the URIC structure. ### Claim 12 (depends on 10) A non-transitory, tangible computer-readable storage medium storing computer program code, which, when executed on a computer, executes the method as claimed in claim 10.