US 10,646,376 B2Granted

Re-treatment for ophthalmic correction of refraction

AssigneeCarl Zeiss Meditec AG

InventorsMark Bischoff, Dirk Muehlhoff, Gregor Stobrawa

Life of this patent

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Abstract

A planning device generating control data for a treatment apparatus for refraction-correcting ophthalmic surgery is provided, said apparatus using a laser device to separate a corneal volume, which is to be removed for correction, from the surrounding cornea by at least one cut surface in the cornea of an eye, said planning device comprising an interface for receiving corneal data including information on pre-operative cuts which were generated in a previous ophthalmic operation, and computing means for defining a corneal cut surface which confines the corneal volume to be removed, said computing means defining the corneal cut surface on the basis of the corneal data and generating a control dataset for the corneal cut surface for control of the laser device.

Claims10

Dependent claims

A method of refraction-correcting ophthalmic surgery in tissue of an eye after at least one previous ophthalmic surgery in the tissue, wherein a treatment apparatus comprising a laser device is used to generate at least one cut surface in the tissue by deflecting a laser beam in the eye, said method comprising:

accessing information on at least one pre-operative cut generated in the at least one previous ophthalmic surgery;
defining a cut surface on basis of the information on the at least one pre-operative cut;
generating a control dataset describing the cut surface in terms of treatment apparatus control;
transmitting the control dataset to the treatment apparatus, and
generating the cut surface by controlling the laser device using the control dataset,
wherein the laser device used comprises a laser source emitting the laser beam as a pulsed laser beam having a pulse duration in the range of between 1 fs and 10 ps.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/853,037Filed 22 Dec 2017 · continuation
Priority: 26 Apr 2007
Published: US 2018/0116874 A13 May 2018
Granted: 12 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

A61F 9/00827
For photodisruption: refractive correction, e.g. lenticle
A61F 9/008
Methods or devices for eye surgery: using laser
A61F 9/00836
For photodisruption: flap cutting
A61F 2009/00872
Adapted for treatment at a particular location: cornea

Family

Application60/914,179Us provisional application · filed 26 Apr 2007
Application12/109,921Parent of this division · filed 25 Apr 2008
Application14/135,695Parent of this continuation · filed 20 Dec 2013
US 8,623,038 B2Parent of this division · filed 7 Jan 2014
Application14/978,992Parent of this continuation · filed 22 Dec 2015
US 9,237,965 B2Parent of this continuation · filed 19 Jan 2016
US 2018/0116874 A1Pre-grant publication · published 3 May 2018
US 9,855,170 B2Parent of this continuation
Application14/135,695Parent of this division
US 2008/0319464 A1Published application
US 2014/0107633 A1Published application
US 2016/0106590 A1Published application
US 10,646,376 B2This patent

From the US filing history. Foreign family members aren’t listed.