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

IPC: A61B3/107 ,  A61B3/00 ,  A61B3/10

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.

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

IPC: A61B3/113 ,  A61B3/00

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.

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

IPC: G16H20/40 ,  A61F2/16 ,  G16H50/20 ,  G16H50/50 ,  G16H50/70 ,  G16H10/60 ,  G06T15/06

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.

公开(公告)号：US20220183547A1

公开(公告)日：2022-06-16

申请号：US17501894

申请日：2021-10-14

Applicant: ALCON INC.

Inventor： George Hunter Pettit ,  Mark Andrew Zielke ,  Victor Manuel Hernandez ,  Philip Matthew McCulloch

IPC: A61B3/00 ,  A61B3/11 ,  A61B3/103

Abstract: A system for predicting post-operative vignetting in an eye of a subject 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 system includes a projection module and a ray tracing module selectively executable by the controller. The projection module is adapted to determine imputed post-operative variables of the eye based at least partially on the pre-operative anatomic data and the intraocular lens. The ray tracing module is adapted to calculate propagation of light through the eye. The ray tracing module is executed to determine a light distribution for respective visual field angles across a predefined field of view. The controller is configured to determine one or more post-operative vignetting parameters based at least partially on the light distribution.

公开(公告)号：US20210173229A1

公开(公告)日：2021-06-10

申请号：US17113611

申请日：2020-12-07

Applicant: Alcon Inc.

Inventor： John Alfred Campin ,  Martin Gruendig ,  Christopher Sean Mudd ,  George Hunter Pettit ,  Peter Zieger

IPC: G02C7/02 ,  A61B3/10

Abstract: A method of verifying ophthalmic measurements includes obtaining, via an ophthalmic measurement device, a first measurement of at least one ophthalmic parameter over a first measurement area. The first measurement area corresponds to an unassisted visible area of a patient's eye. A second measurement of the at least one ophthalmic parameter over a second measurement area is obtained via the measurement device. The second measurement area corresponds to an assisted visible area of the patient's eye. The first measurement is compared to the second measurement. It is determined if the second measurement diverges from the first measurement. Responsive to a determination that the second measurement diverges from the first measurement, an alert that the second measurement is inaccurate is generated. Responsive to a determination that the second measurement does not diverge from the first measurement, the second measurement is accepted as accurate.