LASIK CORNEAL FLAP CUTTING PATTERNS FOR BUBBLE MANAGEMENT

A method implemented in an ophthalmic surgical laser system that employs a resonant scanner, scan line rotator, and XY- and Z-scanners, for forming a corneal flap in a patient's eye with improved bubble management during each step of the flap creation process. A pocket cut is formed first below...

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Bibliographische Detailangaben
Hauptverfasser: Laron, Michal, Nelson, Jesse, Mehta-Hurt, Deepali, Hill, James, Gao, Wenzhi, Gray, Paul, Fu, Hong, Villanueva, Cynthia, Voorhees, Andrew, Rahaman, Mohammad Saidur, Schwam, Brian
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method implemented in an ophthalmic surgical laser system that employs a resonant scanner, scan line rotator, and XY- and Z-scanners, for forming a corneal flap in a patient's eye with improved bubble management during each step of the flap creation process. A pocket cut is formed first below bed level, followed by the bed connected to the pocket cut, then by a side cut extending from the bed to the anterior corneal surface. The pocket cut includes a pocket region located below the bed level and a ramp region connecting the pocket region to the bed. The bed is formed by a bed cut, including multiple overlapping parallel raster scan passes, and a ring cut. The side cut is formed by multiple side-cut layers at different depths which are joined together. All cuts are formed by scanning a laser scan line generated by the resonant scanner.