公开(公告)号：US20210038071A1

公开(公告)日：2021-02-11

申请号：US16935217

申请日：2020-07-22

Applicant: TOPCON CORPORATION

Inventor： Yoko TATARA ,  Tatsuo YAMAGUCHI ,  Makoto SAIKA

IPC: A61B3/10 ,  A61B3/12 ,  G01B9/02 ,  G06T11/00 ,  G06T7/90 ,  G06T7/00

Abstract: An ophthalmic apparatus of an aspect example applies optical coherence tomography (OCT) to an eye, and includes an interferometer, an OCT data generating unit, an optical path length changing unit, and a processing unit. The interferometer includes a measurement arm and a reference arm. The OCT data generating unit is configured to generate OCT data based on an output from the interferometer. The optical path length changing unit is configured to change at least one of the optical path length of the measurement arm and the optical path length of the reference arm. The processing unit is configured to control the optical path length changing unit to place partial data of the OCT data corresponding to a predetermined part of the eye at a standard depth level. The standard depth level is set based on a predetermined ocular parameter value.

公开(公告)号：US20200245862A1

公开(公告)日：2020-08-06

申请号：US16777927

申请日：2020-01-31

Applicant: TOPCON CORPORATION

Inventor： Ryoichi HIROSE ,  Tatsuo YAMAGUCHI

IPC: A61B3/10 ,  A61B3/12 ,  A61B3/00 ,  G06T3/60

Abstract: A new technique is provided to easily grasp the form of the fundus and the like of the eye to be examined being depicted in a tomographic image. An ophthalmic information processing device includes an image rotation circuit and a display control circuit. The image rotation circuit rotates a tomographic image of the eye to be examined acquired by using optical coherence tomography while making a measurement optical axis be eccentric relative to a predetermined site of the eye to be examined, in accordance with an eccentric amount and an eccentric direction of the measurement optical axis relative to the predetermined site. The display control circuit causes a display device to display the tomographic image rotated by the image rotation circuit.

公开(公告)号：US20200214557A1

公开(公告)日：2020-07-09

申请号：US16731229

申请日：2019-12-31

Applicant: TOPCON CORPORATION

Inventor： Ryoichi HIROSE ,  Tatsuo YAMAGUCHI

IPC: A61B3/10 ,  A61B3/00

Abstract: An ophthalmologic apparatus, includes: a first concave mirror and a second concave mirror having a concave surface-shaped first reflective surface and a concave surface-shaped second reflective surface; an SLO optical system configured to project light from an SLO light source onto a subject's eye via the first concave mirror and the second concave mirror, and to detect returning light from the subject's eye; a first optical scanner configured to deflect the light from the SLO light source to guide the light to the first reflective surface; a second optical scanner configured to deflect light reflected by the first reflective surface to guide the light to the second reflective surface; an OCT optical system including a third optical scanner, and configured to split light from an OCT light source into measurement light and reference light, to project the measurement light deflected by the third optical scanner onto the subject's eye, and to detect interference light between returning light of the measurement light from the subject's eye and the reference light; an optical path coupling member disposed between the first optical scanner and the first concave mirror, and combining an optical path of the SLO optical system and an optical path of the OCT optical system; and a correction unit configured to correct detection result of the interference light detected by the OCT optical system or an image formed based on the detection result.