公开(公告)号：US20230157538A1

公开(公告)日：2023-05-25

申请号：US18051317

申请日：2022-10-31

Applicant: Alcon Inc.

Inventor： Utkarsh Sharma

IPC: A61B3/10 ,  G01B9/02

CPC classification number: A61B3/102 ,  G01B9/02

Abstract: In certain embodiments, an OCT system sends a sample beam to a sample (e.g., an eye) along a sample path divided into multiple sample path ranges. The system sends a reference beam to a reference arm system with multiple reference arms, where each reference arm corresponds to a sample path range. Each arm has a specific dispersion level with a corresponding dispersion compensation parameter set designed to address the specific level. A detector detects reflected sample and reference beams. A computer performs the following for each sample path range: select the dispersion compensation parameter set corresponding to the reference arm of the sample path range; apply the dispersion compensation parameter set to the detector signal to yield image information; and process the image information. The computer generates an image of the sample from the image information for the sample path ranges.

公开(公告)号：US20230157537A1

公开(公告)日：2023-05-25

申请号：US18049963

申请日：2022-10-26

Applicant: Alcon Inc.

Inventor： Utkarsh Sharma ,  Zsolt Bor

IPC: A61B3/10 ,  A61B3/14

CPC classification number: A61B3/102 ,  A61B3/14 ,  A61B5/0066

Abstract: In certain embodiments, an ophthalmic laser surgical system for imaging and treating a target in an eye includes an imaging system with an optical coherence tomography (OCT) device that directs an OCT imaging beam along an imaging beam path towards the target in the eye, and generates OCT images from the OCT imaging beam reflected from the eye. The beam combining and alignment device aligns the OCT imaging beam and the laser beam. The laser-OCT xy-scanner: receives the OCT imaging beam from the imaging system, directs the OCT imaging beam along the imaging beam path towards the eye, and scans the OCT imaging beam in an xy-plane in the eye; and receives the laser beam from the laser device, directs the laser beam along the laser beam path aligned with the imaging beam path towards the eye, and scans the laser beam in the xy-plane in the eye.

公开(公告)号：US20230157536A1

公开(公告)日：2023-05-25

申请号：US17938187

申请日：2022-10-05

Applicant: Alcon Inc.

Inventor： Utkarsh Sharma

IPC: A61B3/10 ,  A61F9/008 ,  G06T7/13 ,  G06T7/60 ,  G06T7/73 ,  A61B3/00 ,  G02B26/10

CPC classification number: A61B3/102 ,  A61F9/008 ,  G06T7/13 ,  G06T7/60 ,  G06T7/73 ,  A61B3/0058 ,  G02B26/101 ,  G06T2207/10101 ,  G06T2207/30041 ,  G06T2207/20216

Abstract: In certain embodiments, an ophthalmic laser surgical system for imaging and treating a target in an eye includes an optical coherence tomography (OCT) device that: directs an imaging beam towards the eye; generates three-dimensional (3D) image data from the imaging beam reflected from the eye; and generates two-dimensional (2D) enface images from the 3D image data. The 2D enface images include a target enface image imaging the target in the eye and a retinal enface image imaging a shadow cast by the target onto the retina. An xy-scanner directs the imaging beam along an imaging beam path towards the eye, and directs a laser beam from the laser device along a laser beam path aligned with the imaging beam path towards the eye. A computer compares the target of the target enface image and the shadow of the retinal enface image to confirm the presence of the target.