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公开(公告)号：US20230119409A1
公开(公告)日：2023-04-20
申请号：US17945884
申请日：2022-09-15
Applicant: Alcon Inc.
Inventor： Peter Zieger , Tillmann Wieland , Martin Gründig
Abstract: The present disclosure provides a non-invasive technique to determine a true set of refractive indices of a patient's eye in order to generate an accurate model of the patient's eye. Certain aspects provide a system for generating a three-dimensional reconstruction model of a patient's eye. The system includes an imaging device configured to generate first and second measurements of a patient's eye at first and second angles relative to a line of sight of the patient's eye. The system includes an image processor configured to generate a first and second plurality of models of the patient's eye based on applying a plurality of sets of refractive indices to the first and second measurements; identify a first model from the first plurality of models that is congruent with a second model from the second plurality of models; and determine a set of refractive indices associated with the first and second models.
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公开(公告)号：US20250113997A1
公开(公告)日：2025-04-10
申请号：US18987505
申请日：2024-12-19
Applicant: Alcon Inc.
Inventor： Daniil Nekrassov , George Hunter Pettit , Martin Gründig , Mark Andrew Zielke , John Alfred Campin
Abstract: An ophthalmic system for measuring an eye comprises measuring devices and a computer. The measuring devices comprise an optical coherence tomography (OCT) device and an aberrometer. The OCT device directs OCT light towards the eye, and detects the OCT light reflected from the eye to measure the eye. The aberrometer directs aberrometer light towards the eye, and detects the aberrometer light reflected from the eye to measure the eye. The computer generates an ocular model of the eye according to the reflected OCT light. The ocular model comprises parameters for the eye, where each parameter is assigned a value. The computer determines an OCT-based wavefront according to the ocular model, determines an aberrometer-based wavefront according to the reflected aberrometer light, ascertains a deviation between the OCT-based wavefront and the aberrometer-based wavefront, and evaluates measurements from one or more of the measuring devices according to the deviation.
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公开(公告)号：US20250082198A1
公开(公告)日：2025-03-13
申请号：US18958720
申请日：2024-11-25
Applicant: Alcon Inc.
Inventor： Sascha Birkner , Martin Gründig , Peter Zieger
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：US12213734B2
公开(公告)日：2025-02-04
申请号：US18336747
申请日：2023-06-16
Applicant: Alcon Inc.
Inventor： Sascha Birkner , Martin Gründig
IPC: A61B3/113 , A61B3/00 , A61B3/10 , A61B3/12 , A61B3/14 , A61B3/18 , G06T7/00 , G06T7/246 , G06T7/73 , G06V40/19
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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公开(公告)号：US12207874B2
公开(公告)日：2025-01-28
申请号：US17574686
申请日：2022-01-13
Applicant: Alcon Inc.
Inventor： Daniil Nekrassov , George Hunter Pettit , Martin Gründig , Mark Andrew Zielke , John Alfred Campin
Abstract: An ophthalmic system for measuring an eye comprises measuring devices and a computer. The measuring devices comprise an optical coherence tomography (OCT) device and an aberrometer. The OCT device directs OCT light towards the eye, and detects the OCT light reflected from the eye to measure the eye. The aberrometer directs aberrometer light towards the eye, and detects the aberrometer light reflected from the eye to measure the eye. The computer generates an ocular model of the eye according to the reflected OCT light. The ocular model comprises parameters for the eye, where each parameter is assigned a value. The computer determines an OCT-based wavefront according to the ocular model, determines an aberrometer-based wavefront according to the reflected aberrometer light, ascertains a deviation between the OCT-based wavefront and the aberrometer-based wavefront, and evaluates measurements from one or more of the measuring devices according to the deviation.
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Patent Agency Ranking
公开(公告)号：US20230404396A1
公开(公告)日：2023-12-21
申请号：US18460210
申请日：2023-09-01
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：US20220225874A1
公开(公告)日：2022-07-21
申请号：US17574686
申请日：2022-01-13
Applicant: Alcon Inc.
Inventor： Daniil Nekrassov , George Hunter Pettit , Martin Gründig , Mark Andrew Zielke , John Alfred Campin
Abstract: An ophthalmic system for measuring an eye comprises measuring devices and a computer. The measuring devices comprise an optical coherence tomography (OCT) device and an aberrometer. The OCT device directs OCT light towards the eye, and detects the OCT light reflected from the eye to measure the eye. The aberrometer directs aberrometer light towards the eye, and detects the aberrometer light reflected from the eye to measure the eye. The computer generates an ocular model of the eye according to the reflected OCT light. The ocular model comprises parameters for the eye, where each parameter is assigned a value. The computer determines an OCT-based wavefront according to the ocular model, determines an aberrometer-based wavefront according to the reflected aberrometer light, ascertains a deviation between the OCT-based wavefront and the aberrometer-based wavefront, and evaluates measurements from one or more of the measuring devices according to the deviation.
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公开(公告)号：US20220192485A1
公开(公告)日：2022-06-23
申请号：US17507659
申请日：2021-10-21
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：US20220189608A1
公开(公告)日：2022-06-16
申请号：US17501918
申请日：2021-10-14
Applicant: Alcon Inc.
Inventor： George Hunter Pettit , Mark Andrew Zielke , John Alfred Campin , Martin Gründig , Daniil Nekrassov
Abstract: A system and method for selecting a preferred 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 in communication with a diagnostic module adapted to store pre-operative anatomic data of the eye as an eye model. The controller is configured to determine respective imputed post-operative variables for each of a plurality of intraocular lenses, via a projection module. A respective pseudophakic eye model is generated for each of the plurality of intraocular lenses by incorporating the respective imputed post-operative variables into the eye model. A ray tracing module is executed in the respective pseudophakic eye model to determine at least one respective metric for the plurality of intraocular lenses. The preferred intraocular lens is selected based on a comparison of the respective metric.
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公开(公告)号：US20220167844A1
公开(公告)日：2022-06-02
申请号：US17675383
申请日：2022-02-18
Applicant: Alcon Inc.
Inventor： Jessica Jurich , Horia Grecu , Martin Gründig , Tobias Jura Rapoport
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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