公开(公告)号：US20230263391A1

公开(公告)日：2023-08-24

申请号：US18142043

申请日：2023-05-02

Applicant: Topcon Corporation ,  TOHOKU UNIVERSITY ,  RIKEN

Inventor： Toru NAKAZAWA ,  Kazuko OMODAKA ,  Hideo YOKOTA ,  Guangzhou AN ,  Tsutomu KIKAWA

IPC: A61B3/12 ,  A61B3/14 ,  G06T7/00

CPC classification number: A61B3/12 ,  A61B3/14 ,  G06T7/0012 ,  G06T2207/20081 ,  G06T2207/30041

Abstract: An ophthalmic information processing apparatus includes a determiner and a detector. The determiner is configured to determine a presence or absence of a disc hemorrhage for a front image of a fundus of a subject's eye, using a disc hemorrhage determination model obtained by performing machine learning using a plurality of fundus images labeled with labels indicating the presence or absence of a disc hemorrhage as first teaching data. The detector is configured to detect a disc hemorrhage region depicted in the front image that is determined to have the disc hemorrhage, using a disc hemorrhage region detection model obtained by performing machine learning using a plurality of pairs of image groups as second teaching data, each pair having a front image of a fundus and a disc hemorrhage region image representing a disc hemorrhage region depicted in the front image.

公开(公告)号：US20200093369A1

公开(公告)日：2020-03-26

申请号：US16525598

申请日：2019-07-30

Applicant: TOPCON CORPORATION

Inventor： Kanichi TOKUDA ,  Tsutomu KIKAWA ,  Hiroyuki UEDA

IPC: A61B3/12 ,  A61B3/10 ,  A61B3/00 ,  G06T7/00

Abstract: An ophthalmologic information processing apparatus includes a reference data setting unit, a first region specifying unit, and a second region specifying unit. The reference data setting unit is configured to set, as first reference data, first fundus data among a plurality of fundus data of a fundus of a subject's eye acquired at different acquisition timings using optical coherence tomography. The first region specifying unit is configured to specify one or more first atrophy regions in the fundus by analyzing the first reference data. The second region specifying unit is configured to specify one or more second atrophy regions by analyzing second fundus data based on the one or more first atrophy regions, the second fundus data being acquired after the acquisition timing of the first reference data among the plurality of fundus data.

公开(公告)号：US20210272283A1

公开(公告)日：2021-09-02

申请号：US17306957

申请日：2021-05-04

Applicant: Topcon Corporation

Inventor： Guangzhou AN ,  Masahiro AKIBA ,  Tsutomu KIKAWA

IPC: G06T7/00 ,  A61B3/12 ,  A61B3/14 ,  A61B3/00

Abstract: An ophthalmologic information processing apparatus includes an acquisition unit and a determination unit. The acquisition unit is configured to acquire a captured image of a subject's eye. The determination unit is configured to determine whether or not the captured image acquired by the acquisition unit is an analysis error image including a predetermined analysis error factor.

公开(公告)号：US20200093363A1

公开(公告)日：2020-03-26

申请号：US16540085

申请日：2019-08-14

Applicant: TOPCON CORPORATION

Inventor： Makoto SAIKA ,  Tsutomu KIKAWA

IPC: A61B3/10 ,  A61B3/12 ,  A61B3/15

Abstract: An ophthalmologic apparatus includes an OCT measurement unit, a corneal shape measurement unit, an eyeball model generator, and a site specifying unit. The OCT measurement unit is configured to acquire data of a subject's eye by deflecting measurement light using an optical scanner to project onto the subject's eye and detecting interference light between returning light of the measurement light from the subject's eye and reference light. The corneal shape measurement unit is configured to obtain curvature radius distribution on a cornea by detecting returning light of a measurement pattern projected onto a cornea of the subject's eye. The eyeball model generator is configured to generate an eyeball model using the curvature radius distribution on the cornea. The site specifying unit is configured to specify a traveling direction of the measurement light by performing ray tracing on the measurement light incident on each of a plurality of incident positions on the cornea based on a scan angle and the eyeball model, and to specify a position corresponding to an intraocular site of the subject's eye in the traveling direction based on the data acquired using the measurement light.