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公开(公告)号：US20250072745A1
公开(公告)日：2025-03-06
申请号：US18820109
申请日：2024-08-29
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Yoko TATARA , Takafumi YUKIMORI , Makoto SAIKA , Ryoka NORO
Abstract: An ophthalmic examination apparatus includes a visual target projection system including a visual target presentation portion that presents a fixed visual target to left and right subject eyes, an objective measurement optical system that objectively measures eye characteristics of the left and right subject eyes, and a controller that controls each portion of the apparatus, wherein the fixed visual target is a visual target for the left eye and a visual target for the right eye that are to be respectively projected to the left and right subject eyes and have a same drawing pattern in positions where up and down direction positions to visual target flames are the same.
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公开(公告)号：US20250072744A1
公开(公告)日：2025-03-06
申请号：US18820069
申请日：2024-08-29
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Yoko TATARA , Takafumi YUKIMORI , Makoto SAIKA , Ryoka NORO
Abstract: An ophthalmic examination apparatus includes a visual target projection system that includes a visual target presentation portion that presents a fixed visual target to left and right subject eyes, an objective measurement optical system that objectively measures eye characteristics of the left and right subject eyes, and a controller that controls each portion of the apparatus, wherein the controller measures the eye characteristics of the left and right subject eyes with the objective measurement optical system and acquires an objective refraction value as objective measurement information when fusion is attempted with left and right subject eyes with respect to a change in the convergence distance.
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公开(公告)号：US20250057410A1
公开(公告)日：2025-02-20
申请号：US18804483
申请日：2024-08-14
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Yoko TATARA , Takafumi YUKIMORI , Makoto SAIKA , Ryoka NORO , Manabu SAKAIHARA
Abstract: An ophthalmologic apparatus includes a visual target presenting portion that presents fixation targets to subject eyes; an objective measurement optical system that objectively measures eye characteristics of the subject eyes; and a controller. Each of the fixation targets includes fusion targets depicted in a manner that allows binocular fusion while the subject eyes respectively view the fixation targets. The visual target presenting portion presents the fixation targets while changing an examination distance from the subject eyes to the fixation target when an anisometropia is induced. In the anisometropia, one subject eye is in a fully corrected condition and the other subject eye is corrected by a predetermined degree from the fully corrected condition. The controller controls the objective measurement optical system to measure the eye characteristics while the subject eyes binocularly view the fixation targets and acquire refractive values of the subject eyes as objective measurement information.
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公开(公告)号：US20230309822A1
公开(公告)日：2023-10-05
申请号：US18126447
申请日：2023-03-26
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Makoto SAIKA , Yoko TATARA , Akio HAYASHI
CPC classification number: A61B3/103 , A61B3/0041 , A61B3/0025
Abstract: An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye, an objective measurement optical system configured to measure objective refractive characteristics of the subject eye, and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to measure the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during an RG test for checking whether or not corrected power is overcorrected or undercorrected by the subjective measurement optical system.
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公开(公告)号：US20200085292A1
公开(公告)日：2020-03-19
申请号：US16568262
申请日：2019-09-12
Applicant: TOPCON CORPORATION
Inventor： Yasufumi FUKUMA , Takefumi HAYASHI , Yoko TATARA
Abstract: An ophthalmic apparatus of an exemplary aspect performs the first and second OCT scans on a subject's eye. The first OCT scan is performed on the first region including the first site of the subject's eye, and the second OCT scan is performed on the second region including the second site. The ophthalmic apparatus acquires the first deviation information of the subject's eye prior to the first OCT scan and performs alignment, and also acquires the second deviation information of the subject's eye prior to the second OCT scan and performs alignment. The ophthalmic apparatus calculates the distance between the first site and the second site based on the first data acquired through the first OCT scan and second data acquired through the second OCT scan.
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Patent Agency Ranking
公开(公告)号：US20190282083A1
公开(公告)日：2019-09-19
申请号：US16289675
申请日：2019-03-01
Applicant: TOPCON CORPORATION
Inventor： Takefumi HAYASHI , Yoko TATARA , Shunichi MORISHIMA
Abstract: An ophthalmologic apparatus includes an objective lens, a refractive power measurement optical system, an inspection optical system, and an optical path separating unit. The refractive power measurement optical system is configured to project light in a first wavelength range onto a subject's eye via the objective lens and to detect returning light from the subject's eye. The inspection optical system is configured to project light in a second wavelength range onto the subject's eye via the objective lens. The optical path separating unit that is arranged in an optical path of the refractive power measurement optical system and is configured to separate an optical path of the inspection optical system from the optical path of the refractive power measurement optical system by performing wavelength separation based on changeable wavelength separation characteristics.
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公开(公告)号：US20230309828A1
公开(公告)日：2023-10-05
申请号：US18126446
申请日：2023-03-26
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Makoto SAIKA , Yoko TATARA , Akio HAYASHI
CPC classification number: A61B3/18 , A61B3/032 , A61B3/103 , A61B3/0058
Abstract: An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye; an objective measurement optical system configured to measure objective refractive characteristics of the subject eye; and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to perform measurement of the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during a weakest power test in which a weakest point is being obtained by the subjective measurement optical system, a maximum visual acuity value or a set predetermined visual acuity value being readable from the weakest point.
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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
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.
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公开(公告)号：US20200046220A1
公开(公告)日：2020-02-13
申请号：US16432965
申请日：2019-06-06
Applicant: TOPCON CORPORATION
Inventor： Yoko TATARA
Abstract: An ophthalmologic apparatus includes a refractometry optical system, an OCT optical system, a fixation projection system, and a controller. The refractometry optical system is configured to project light onto a subject's eye and to detect returning light from the subject's eye. The OCT optical system is configured to split light from an OCT light source into measurement light and reference light, to project the measurement light 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. The fixation projection system is configured to simultaneously project a first fixation target and a second fixation target onto the subject's eye, a visual angle of the second fixation target being narrower than a visual angle of the first fixation target. The controller is configured to control the refractometry optical system and the OCT optical system to simultaneously perform a refractometry and an OCT measurement.
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公开(公告)号：US20190298168A1
公开(公告)日：2019-10-03
申请号：US16289679
申请日：2019-03-01
Applicant: TOPCON CORPORATION
Inventor： Yoko TATARA , Michiko NAKANISHI , Shunichi MORISHIMA
Abstract: An ophthalmologic apparatus includes an objective lens, a refractive power measurement optical system, an inspection optical system, and a corneal shape measurement optical system. The refractive power measurement optical system projects light onto a subject's eye via the objective lens and detects returning light from the subject's eye. The inspection optical system includes an optical scanner. The inspection optical system deflects light from a light source, projects the light deflected by the optical scanner onto the subject's eye via the objective lens, and detects returning light from the subject's eye. The corneal shape measurement optical system projects an arc-like or circumferential measurement pattern from an outer edge side of the objective lens onto the subject's eye and detects returning light from a cornea of the subject's eye. When a working distance is WD, a distance from a corneal apex of the subject's eye to a pupil of the subject's eye is d1, a distance from the pupil to a fundus of the subject's eye is d2, and a scan range by the optical scanner is SA square, a diameter of the objective lens is greater than or equal to ((WD+d1)×SA/d2).
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