# US 11,076,990 B2 · System and method for ophthalmic laser surgery employing eye tracking without eye docking

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- Number: US 11,076,990 B2
- Document ID: US11076990B2
- Status: Granted
- Kind: B2
- Application number: 15/847,897
- Filed: 2017-12-19
- Published: 2018-04-26
- Granted: 2021-08-03
- Earliest claimed: 2013-03-15
- Assignees: AMO Development, LLC
- Applicants: Amo Development, LLC
- Inventors: Hon M. Lee; Peter-Patrick De Guzman; Victor Kardos; Hong Fu; Robert G. Heitel; John M. Tamkin; Mikhail Levin; Bing Wang
- Web page: https://patentgrep.com/patent/US11076990B2

## CPC

- A61F 9/008: using laser
- A61F 9/009: Auxiliary devices making contact with the eyeball and coupling in laser light, {e.g. goniolenses (apparatus for eye examination A61B3/0008)}
- A61F 9/00825: {for photodisruption}
- A61F 2009/00846: {Eyetracking}
- A61F 2009/00851: {Optical coherence topography [OCT]}
- A61F 2009/0087: {Lens}
- A61F 2009/00872: {Cornea}
- 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)

## Abstract

A system and method for performing ophthalmic surgery using an ultra-short pulsed laser is provided. The system includes a laser engine configured to provide an ultra-short pulsed laser beam, optics configured to direct the laser beam to an undocked eye of a patient, an eye tracker configured to measure five degrees of freedom of movement of the undocked eye, an optical coherence tomography module configured to measure depth of the undocked eye, and a controller configured to control laser beam position on the undocked eye toward a desired laser pattern based on depth and the five degrees of freedom of movement of the undocked eye. Adaptive optics are also provided. Also disclosed are a scleral ring including fiducial markings and a compliant contact lens and fluid tillable contact lens configured to facilitate ultra-short pulsed laser surgery while reducing or eliminating eye docking requirements.

## Claims

### Claim 1

A surgical laser system configured to deliver an ultra-short pulsed laser beam to a patient's eye comprising:
a lens configured to fit over an anterior surface of the patient's eye and cover a central portion of the cornea, the lens comprising a substantially flat anterior surface and a chamber configured to cooperate with the anterior surface of the patient's eye to maintain fluid in the chamber, the lens further comprising a scleral ring at a base of the lens to support the lens on the eye, wherein the scleral ring is formed of a compliant material, the scleral ring having a first side and a second side opposite to each other, the first side defining a continuous ring-shaped area, the scleral ring configured to have the continuous ring-shaped area of the first side fully contact the anterior surface of the eye, wherein the lens is free of other surfaces that contact the anterior surface of the eye;
wherein the lens is configured to deliver an ultra-short pulsed laser beam to the eye of the patient and facilitate performance of ocular surgery by providing an index of refraction closer to that of ocular tissue than air.

### Claim 2 (depends on 1)

The system of claim 1, wherein the lens is configured to receive fluid via a first fluid opening and disperse fluid via a second fluid opening, wherein reversing fluid flow from the chamber provides a level of suction maintaining the lens on the eye of the patient.

### Claim 3 (depends on 1)

The system of claim 1, wherein the lens comprises at least one fiducial marking.

### Claim 4 (depends on 1)

The system of claim 1, wherein the lens comprises at least one edge formed adjacent the anterior surface and forming a cavity, the at least one edge configured to enable docking of the lens to a patient interface.