Method and apparatus for patterned plasma-mediated laser trephination of the lens capsule and three dimensional phaco-segmentation
AssigneeOptimedica Corporation
InventorsMark S. Blumenkranz, Daniel V. Palanker, David H. Mordaunt, Dan E. Andersen
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Abstract
System and method for making incisions in eye tissue at different depths. The system and method focuses light, possibly in a pattern, at various focal points which are at various depths within the eye tissue. A segmented lens can be used to create multiple focal points simultaneously. Optimal incisions can be achieved by sequentially or simultaneously focusing lights at different depths, creating an expanded column of plasma, and creating a beam with an elongated waist.
Claims36
1-24. (canceled)
A laser surgical system for making incisions in ocular tissue during a cataract surgical procedure, the system comprising:
- a laser operable to generate a laser beam for incising ocular tissue;
- a scanning assembly operable to direct a focal zone of the laser beam to locations within a patient's eye;
- an optical coherence tomography (OCT) imaging device;
- and
- a control system operably coupled to the laser, the scanning assembly, and the OCT imaging device;
- the control system being configured to:
- operate the OCT imaging device to generate image data for ocular tissue of the patient, the image data including lens interior image data for an interior portion of the lens of the patient's eye;
- process the image data to determine an anterior capsulotomy scanning pattern for scanning the focal zone of the laser beam for performing an anterior capsulotomy;
- and
- operate the laser and the scanning assembly to scan the focal zone of the laser beam in the anterior capsulotomy scanning pattern so as to perform the anterior capsulotomy, wherein positioning of the focal zone is guided by the control system based on the image data.
A method for incising ocular tissue during a cataract surgical procedure, the method comprising:
- operating an optical coherence tomography (OCT) imaging device to generate image data of ocular tissue, the image data including lens interior image data for an interior portion of the lens of a patient's eye;
- processing the image data via a control system so as to generate an anterior capsulotomy scanning pattern for scanning a focal zone of a laser beam for performing an anterior capsulotomy, the OCT imaging device being operatively coupled to the control system;
- generating the laser beam;
- and
- scanning the focal zone of the laser beam in the anterior capsulotomy scanning pattern so as to perform the anterior capsulotomy, wherein positioning of the focal zone is controlled by the control system based on the image data.
A cataract surgical procedure comprising:
- operating an optical coherence tomography (OCT) imaging device to generate image data of ocular tissue, the image data including lens interior image data for an interior portion of the lens of a patient's eye;
- processing the image data via a control system so as to generate an anterior capsulotomy scanning pattern for scanning a focal zone of a laser beam for performing an anterior capsulotomy, the OCT imaging device being operatively coupled to the control system;
- generating the laser beam;
- and
- scanning the focal zone of the laser beam in the anterior capsulotomy scanning pattern so as to perform the anterior capsulotomy, wherein positioning of the focal zone is controlled by the control system;
- and
- ultrasonically breaking the lens into pieces.
Dependencies are inferred from the claim text.