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公开(公告)号：US20190099076A1
公开(公告)日：2019-04-04
申请号：US16085595
申请日：2017-02-20
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Masakazu HIROTA , Kohji NISHIDA , Makoto SAIKA , Tatsuo YAMAGUCHI , Suguru MIYAGAWA
Abstract: An eye-fatigue examining device and an eye-fatigue examining method capable of examining eye fatigue of a subject's eye regardless of an age of a patient are provided. The eye-fatigue examining device includes: a light quantity difference adjusting unit that increases a light quantity difference between lights respectively incident on right and left subject's eyes; a gaze direction detecting unit that detects gaze directions of the respective subject's eyes while the light quantity difference adjusting unit increases the light quantity difference; and a light quantity difference deciding unit that decides a specific light quantity difference at which a change in the gaze directions due to the increase in the light quantity difference occurs, based on the detection result of the gaze direction detecting unit.
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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：US20200085293A1
公开(公告)日：2020-03-19
申请号：US16691882
申请日：2019-11-22
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Yoko HIROHARA , Makoto SAIKA , Suguru MIYAGAWA
Abstract: An ophthalmologic device includes: a visual target presenting unit configured to present a common visual target to be viewed with both subject's eyes; a presenting distance changing unit configured to change a presenting distance of the visual target presented by the visual target presenting unit from a predetermined far vision distance to a predetermined near vision distance; an ocular characteristic acquiring unit configured to objectively acquire an optical characteristic of the subject's eyes; an addition power adding unit configured to add the addition power to the both subject's eyes; and a control unit configured to cause the presenting distance changing unit to change the presenting distance and the ocular characteristic acquiring unit to continuously acquire the optical characteristic, in a state in which an addition power is added to the both subject's eyes by the addition power adding unit.
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Patent Agency Ranking
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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7.发明申请公开(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
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.
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公开(公告)号：US20190090735A1
公开(公告)日：2019-03-28
申请号：US16139195
申请日：2018-09-24
Applicant: TOPCON CORPORATION
Inventor： Kouta FUJII , Makoto SAIKA , Jun SAKAI
Abstract: An ophthalmic apparatus of an exemplary embodiment is capable of applying OCT to the fundus of a subject's eye, and includes an optical system, an optical scanner, an optical path length changing device, and a controller. The optical system splits light output front a light source into measurement light and reference light, projects the measurement light onto the fundus, generates interference light by superposing returning light of the measurement light from the subject's eye on the reference light, and detects the interference light. The optical scanner deflects the measurement light for scanning the fundus. The optical path length changing device changes at least one of an optical path length of the measurement light and an optical path length of the reference light. The controller controls the optical scanner based on at least the optical path length.
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公开(公告)号：US20190082957A1
公开(公告)日：2019-03-21
申请号：US16132507
申请日：2018-09-17
Applicant: TOPCON CORPORATION
Inventor： Kouta FUJII , Makoto SAIKA , Jun SAKAI
Abstract: An ophthalmic apparatus of an embodiment include a data acquisition device, distribution data generator, correction value calculator, magnification corrector, and data comparator. The data acquisition device acquires three dimensional data by applying OCT to the fundus of a subject's eye. The distribution data generator generates distribution data of a predetermined measurement value in the fundus based on the three dimensional data. The correction value calculator calculates a magnification correction value based on a predetermined condition for acquiring the three dimensional data. The magnification corrector changes at least one of the size of standard distribution data generated in advance for the predetermined measurement value and the size of the distribution data, based on the magnification correction value. The data comparator compares the distribution data with the standard distribution data, at least one of whose sizes has been changed by the magnification corrector.
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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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