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公开(公告)号：US20250009223A1
公开(公告)日：2025-01-09
申请号：US18775624
申请日：2024-07-17
Applicant: Alcon Inc.
Inventor： John Alfred Campin , Martin Gründig , Armin Haupt , George Hunter Pettit , Mark Andrew Zielke
Abstract: A method for assessing a lens capsule stability condition in an eye of a human patient includes directing electromagnetic energy in a predetermined spectrum onto a pupil of the eye, via an energy source, concurrently subsequent to a movement of the eye causing eye saccades to occur therein. The method also includes acquiring images of the eye indicative of the eye saccades using an image capture device, and computing, via the ECU, a motion curve of the lens capsule using the images. Additionally, the method includes extracting time-normalized lens capsule oscillation traces based on the motion curve via the ECU, and then model-fitting the lens capsule oscillation traces via the ECU to thereby assess the lens capsule instability condition. An automated system for performing an embodiment of the method is also disclosed herein, including the energy source, image capture device, and ECU.
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公开(公告)号：US11786119B2
公开(公告)日：2023-10-17
申请号：US17025335
申请日：2020-09-18
Applicant: Alcon Inc.
Inventor： Martin Gründig
Abstract: Systems and methods for initializing and calibrating an eye tracking system include an eye tracker configured to capture a first image of an eye from a first location and a second image of the eye from a second location, and a control processor configured to detect a first plurality of eye characteristics from the first image, the eye characteristics having first corresponding image coordinates, detect a second plurality of eye characteristics from the second image, the eye characteristics having second corresponding image coordinates, and determine a calibration offset and a calibration gain. The control processor may be further configured to determine an eye fixation position and orientation relative to an optical axis of the eye tracker based at least in part on the first corresponding image coordinates and/or the second corresponding image coordinates.
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公开(公告)号：US11779208B2
公开(公告)日：2023-10-10
申请号：US17675383
申请日：2022-02-18
Applicant: Alcon Inc.
Inventor： Jessica Jurich , Horia Grecu , Martin Gründig , Tobias Jura Rapoport
CPC classification number: A61B3/113 , A61B3/0025 , A61F9/008 , A61F2009/00846 , A61F2009/00897
Abstract: In certain embodiments, a system for tracking movement of an eye comprises a camera system, a computer system, and an output device. The camera system generates images of the eye. The computer system stores the images and at least one of the images as a reference image. The computer system also tracks movement of the eye within a tracking range by comparing a current image with the reference image, and by determining a movement of the eye from the comparison of the current image and the reference image. The tracking range has one or more alert points. The computer system also determines an orientation of the eye relative to at least one alert point of the tracking range. The output device outputs a range indicator that indicates the orientation of the eye relative to the at least one alert point of the tracking range.
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公开(公告)号：US20220225869A1
公开(公告)日：2022-07-21
申请号：US17574667
申请日：2022-01-13
Applicant: Alcon Inc.
Inventor： George Hunter Pettit , Daniil Nekrassov , Peter Zieger , Martin Gründig , Horia Grecu , Mark Andrew Zielke , John Alfred Campin
Abstract: An ophthalmic system for generating an ocular model of an eye includes an optical coherence tomography (OCT) device, an aberrometer, and a computer. The OCT device detects OCT light reflected from the eye. The aberrometer detects aberrometer light reflected from the eye. The computer generates the ocular model of the eye according to the reflected OCT light. The ocular model includes parameters describing the eye. The parameters include lens parameters that describe the lens of the eye. The computer determines an OCT-based wavefront according to the ocular model, determines an aberrometer-based wavefront according to the reflected aberrometer light, and compares the OCT-based and the aberrometer-based wavefronts. If the wavefronts differ beyond a predefined tolerance, the computer adjusts one or more values assigned to the parameters until the wavefronts satisfy the predefined tolerance. At least one adjusted value is assigned to a lens parameter.
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公开(公告)号：US20210045631A1
公开(公告)日：2021-02-18
申请号：US16991937
申请日：2020-08-12
Applicant: Alcon Inc.
Inventor： Sascha Birkner , Martin Gründig
IPC: A61B3/113 , G06T7/73 , G06K9/00 , G06T7/00 , G06T7/246 , A61B3/10 , A61B3/12 , A61B3/14 , A61B3/00 , A61B3/18
Abstract: Systems and methods for tracking eye movement during a diagnostic procedure include an eye tracker capturing images of an eye, and a control processor configured to detect an eye position and orientation in each of the images, determine an eye fixation position and orientation relative to an optical axis of the eye tracker, estimate eye fixation parameters based at least in part on the determined eye fixation position and orientation, and track the eye position and orientation by analyzing the images to determine the eye position and orientation relative to the eye fixation parameters. The eye fixation parameters may comprise a reference position and orientation of the eye when fixated. A histogram is constructed of detected eye positions and orientations and analyzed to determine an eye fixation position and orientation.
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Patent Agency Ranking
公开(公告)号：US12186018B2
公开(公告)日：2025-01-07
申请号：US17025452
申请日：2020-09-18
Applicant: Alcon Inc.
Inventor： Sascha Birkner , Martin Gründig , Peter Zieger
IPC: A61B3/10 , A61B3/02 , A61B3/113 , A61B3/12 , A61B3/14 , G06T7/00 , G06T7/20 , G06T7/73 , G06V40/19
Abstract: Systems and methods for tracking the position and condition of an eye during an ophthalmic procedure include an ophthalmic device configured to measure characteristics of an eye, an eye tracker configured to capture a stream of eye images, and a logic device configured to analyze the stream of images to determine whether the eye is fixating on a target object, detect a predetermined blink sequence in the first stream of images, delay for a predetermined tear stabilization period, start a stable tear film interval, and during the stable tear film interval, capture at least one measurement of the eye using the ophthalmic device when the eye is fixating. The blink sequence may include a plurality of blinks in succession and the detection of the blink sequence may include processing the images through a neural network trained to detect an open eye and/or a closed eye.
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公开(公告)号：US20240122468A1
公开(公告)日：2024-04-18
申请号：US18483660
申请日：2023-10-10
Applicant: Alcon Inc.
Inventor： Shannon Frances Fisherkeller , Victor Manuel Hernandez , Nanhong Lou , Tobias Jura Rapoport , Martin Gründig , Armin Soltan Zadi
CPC classification number: A61B3/102 , A61B3/0025 , A61B3/0041 , A61B3/1005
Abstract: Certain aspects of the present disclosure provide for in-situ intraocular lens (IOL) tilt determination and for providing information associated with the angle of IOL tilt intraoperatively. An example method includes imaging an IOL within a patient's eye via an ophthalmic imaging device, in-situ, after implantation of the IOL within the patient's eye; processing the image of the IOL within the patient's eye to determine an angle of tilt of the IOL; and outputting information associated with the angle of IOL tilt to a user interface.
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公开(公告)号：US11712161B2
公开(公告)日：2023-08-01
申请号：US16991913
申请日：2020-08-12
Applicant: Alcon Inc.
Inventor： Sascha Birkner , Martin Gründig
CPC classification number: A61B3/113 , A61B3/0025 , A61B3/102 , A61B3/1225 , A61B3/14 , A61B3/18 , G06T7/74 , G06V40/19 , G06T2207/10101 , G06T2207/30041 , G06V2201/03
Abstract: Systems and methods for tracking eye movement during a diagnostic procedure include a retina imaging system configured to capture a first plurality of images of an eye and detect a presence of a fovea, an eye tracker configured to capture a second plurality of images of the eye and track a position and orientation of the eye; and a control processor configured to synchronize the first and second plurality of images, determine a time at which the fovea is detected in the first plurality of images, and determine one or more images from the second plurality of images to be classified as representative of fixation. The classified images are analyzed to determine eye fixation status during the diagnostic procedure based on eye tracking data.
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公开(公告)号：US20230008122A1
公开(公告)日：2023-01-12
申请号：US17855383
申请日：2022-06-30
Applicant: Alcon Inc.
Inventor： John Alfred Campin , Martin Gründig , Victor Manuel Hernandez , George Hunter Pettit , Mark Andrew Zielke , Daniil Nekrassov
Abstract: A system for selecting a preferred intraocular lens for implantation into an eye includes a controller having a processor and a tangible, non-transitory memory. The controller is configured to obtain diagnostic data of the eye, and obtain historical data composed of historical sets of patient data. The controller is configured to analyze individual risk factors based on the diagnostic data and obtain a weighted combination of the individual risk factors. A respective satisfaction metric for the plurality of intraocular lenses is generated based on the historical data. A preferred intraocular lens may be selected based in part on the respective satisfaction metric and the weighted combination. A visual simulation for each of the plurality of intraocular lenses may be performed, based in part on the diagnostic data. The visual simulation may incorporate an impact of the tear film data.
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公开(公告)号：US20210369106A1
公开(公告)日：2021-12-02
申请号：US17330327
申请日：2021-05-25
Applicant: Alcon Inc.
Inventor： John Alfred Campin , Brant Gillen , Martin Gründig , Robert Moore , George Hunter Pettit , Mark Andrew Zielke
Abstract: A system and method for selecting an intraocular lens, for implantation into an eye, includes a controller having a processor and a tangible, non-transitory memory on which instructions are recorded. The controller is configured to selectively execute a machine learning model trained with a training dataset. Execution of the instructions by the processor causes the controller to obtain pre-operative objective data for the patient, including one or more anatomic eye measurements. The controller is configured to obtain pre-operative questionnaire data for the patient, including at least one personality trait. The pre-operative objective data and the pre-operative questionnaire data are entered as respective inputs to the machine learning model. A predicted subjective outcome score for the patient is generated as an output of the machine learning model. The intraocular lens is selected based in part on the predicted subjective outcome score.
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