US 11,752,037 B2
Optical surface identification for laser eye surgery
Javier Gonzalez, Palo Alto, CA (US); and Bruce Woodley, Palo Alto, CA (US)
Assigned to AMO Development, LLC, Irvine, CA (US)
Filed by AMO Development, LLC, Irvine, CA (US)
Filed on Dec. 21, 2022, as Appl. No. 18/145,010.
Application 16/601,478 is a division of application No. 15/376,491, filed on Dec. 12, 2016, granted, now 10,441,464, issued on Oct. 15, 2019.
Application 18/145,010 is a continuation of application No. 16/601,478, filed on Oct. 14, 2019, granted, now 11,540,945.
Application 15/376,491 is a continuation of application No. 14/070,245, filed on Nov. 1, 2013, granted, now 9,549,670, issued on Jan. 24, 2017.
Claims priority of provisional application 61/722,080, filed on Nov. 2, 2012.
Prior Publication US 2023/0201038 A1, Jun. 29, 2023
Int. Cl. A61F 9/008 (2006.01); A61B 3/10 (2006.01); A61B 3/107 (2006.01); A61B 3/117 (2006.01); A61B 5/00 (2006.01); A61F 9/009 (2006.01)
CPC A61F 9/00825 (2013.01) [A61B 3/102 (2013.01); A61B 3/107 (2013.01); A61B 3/117 (2013.01); A61F 9/008 (2013.01); A61B 5/0066 (2013.01); A61F 9/009 (2013.01); A61F 2009/00851 (2013.01); A61F 2009/00882 (2013.01); A61F 2009/00887 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A laser eye surgery system, comprising:
a cutting laser subsystem configured to generate a pulsed laser beam;
an optical coherence tomography (OCT) imaging subsystem, the OCT imaging subsystem including an adjustable reference path length, the OCT imaging subsystem configured to produce a detection beam having a plurality of wavelengths such that the detection window spans a range of distances relative to the laser eye surgery system; and
control electronics operably connected to the cutting laser subsystem and the OCT imaging subsystem, the control electronics programmed to:
control the OCT imaging subsystem to locate a centrally-located point on the lens capsule anterior surface;
control the OCT imaging subsystem to direct an OCT sample beam into the eye with the reference path length set to position the detection window to encompass the lens capsule anterior surface and the iris;
process returning portions of the sample beam to identify, relative to the laser eye surgery system, a plurality of edge points within the detection window, each edge point being disposed on an optical surface;
generate a surface model of the lens capsule anterior surface based on the location of the centrally-located point on the lens capsule anterior surface and a subset of the edge points;
select a subset of the edge points that are offset from the surface model of the lens capsule anterior surface; and
generate a surface model of the iris based on the subset of the edge points that are offset from the surface model of the lens capsule anterior surface.