公开(公告)号：US20220357197A1

公开(公告)日：2022-11-10

申请号：US17662135

申请日：2022-05-05

Applicant: Alcon Inc.

Inventor： Alireza Malek Tabrizi ,  Reza Khazaeinezhad ,  Adela Apostol ,  John Hossein Karim ,  Daniel Castro ,  Corey Stewart ,  David Jung

IPC: G01J1/42 ,  G02B27/14 ,  G01J1/44 ,  A61F9/008

Abstract: Systems and methods are disclosed for monitoring a laser system using detection of back reflection. In some embodiments, a laser system comprises a laser, at least one optical fiber, and a back-reflection monitoring sensor for detecting electromagnetic radiation reflected back from the optical fiber(s). The back-reflection monitoring sensor may be adapted to detect back-reflected electromagnetic radiation while the laser system is in use. The laser system may further comprise a computing system adapted to calculate an output power of the system based upon the back-reflected electromagnetic radiation. In some embodiments, a method of monitoring a laser system using detection of back reflection comprises transmitting electromagnetic radiation from a laser, receiving the electromagnetic radiation at one or more optical fibers, and detecting electromagnetic radiation that is back reflected at a back-reflection monitoring sensor.

公开(公告)号：US20240081639A1

公开(公告)日：2024-03-14

申请号：US18463160

申请日：2023-09-07

Applicant: Alcon Inc.

Inventor： Zsolt Bor ,  Alireza Malek Tabrizi

IPC: A61B3/103 ,  A61B3/00 ,  A61B3/10 ,  A61B3/117 ,  A61B3/12

CPC classification number: A61B3/103 ,  A61B3/0025 ,  A61B3/102 ,  A61B3/117 ,  A61B3/1225 ,  A61B2505/05

Abstract: Particular embodiments disclosed herein provide an apparatus for performing optometric measurements includes an optical coherence tomography (OCT) imaging system configured to output scanned parallel laser beams across a patient's eye. A line in the OCT image is identified, the line representing a retina of the patient's eye. A shape of the line is then used by the refractive error calculator to measure refractive error of the patient's eye. The height of the line due to curvature indicates degree of myopia or hyperopia. More complex curvature of the line corresponds to higher order aberrations. OCT images for a plurality of section planes may be used to calculate a wavefront elevation map.

公开(公告)号：US20240016378A1

公开(公告)日：2024-01-18

申请号：US18351389

申请日：2023-07-12

Applicant: Alcon Inc.

Inventor： Zsolt Bor ,  Alireza Malek Tabrizi

IPC: A61B3/10 ,  A61B3/00

CPC classification number: A61B3/102 ,  A61B3/0025

Abstract: Particular embodiments disclosed herein provide a method for training a machine learning model to estimate the clinical significance of floaters in a patient's eye. One or more images, such as SLO images or en face retinal OCT images, are evaluated to identify shaded regions corresponding to floaters. The shaded regions are measured and the measurements processed using a machine learning model to obtain an estimated significance. The machine learning model is then updated according to a comparison of the estimated significance to a human-assigned clinical significance. The machine learning model may additionally or alternatively be updated by evaluating the estimated category with respect to visibility threshold data, such as one or more visibility threshold surfaces defined with respect to two or more variables.

公开(公告)号：US20230363944A1

公开(公告)日：2023-11-16

申请号：US18308150

申请日：2023-04-27

Applicant: Alcon Inc.

Inventor： David Jung ,  Alireza Malek Tabrizi ,  Keith Watanabe

IPC: A61F9/008

CPC classification number: A61F9/008 ,  A61B2018/00696

Abstract: Systems and methods are disclosed for flexibly controlling laser pulses being output from a laser system. An example surgical system comprises a laser, an optical switching device, and a laser pulse controller. Optical switching control signals communicated by the laser pulse controller control the length of a pulse picking cycle and the number of laser pulses in each pulse picking cycle to be output from the laser system. The number of laser pulses in each pulse picking cycle to be output from the laser system may be adjustable in a range that includes more than 50% of the laser pulses in each pulse picking cycle.

公开(公告)号：US20230157879A1

公开(公告)日：2023-05-25

申请号：US18049215

申请日：2022-10-24

Applicant: Alcon Inc.

Inventor： Zsolt Bor ,  Alireza Malek Tabrizi ,  Raul Mauricio

IPC: A61F9/008

CPC classification number: A61F9/008 ,  A61B2017/22007 ,  A61F2009/00874

Abstract: In certain embodiments, an ophthalmic laser system for treating a floater in a vitreous of an eye includes a laser device that directs laser pulses towards the floater to yield cavitation bubbles that create a bubble jet to treat the floater. In some examples, the laser device includes a beam multiplexer that splits a laser beam into multiple beams that form the cavitation bubbles that create the bubble jet. In some examples, the laser device directs laser pulses towards the floater according to a pulse pattern that forms the cavitation bubbles that create the bubble jet.