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公开(公告)号：US20200205655A1
公开(公告)日：2020-07-02
申请号：US16633548
申请日：2018-07-23
Applicant: Tohoku University , Kowa Company, Ltd.
Inventor： Toru Nakazawa , Satoshi Shimada , Takuya Hara
Abstract: A perimeter 2 capable of acquiring, as a threshold SV, a value corresponding to a response result of a subject 22 to an optotype presented with various brightness, for measurement points set across an entire measurement field of view of the ocular fundus, displaying the threshold SV as a threshold inspection result SHR and storing the same in a memory 13, comprises: a portion 15 for obtaining a pattern deviation PDV of the threshold SV relating to each measurement point RG, from the threshold inspection result SHR; a portion for 15 for obtaining a P value representing the obtained pattern deviation PDV for each measurement point RG as a probability variable, and generating a probability map image MAP4 indicating the measurement points RG separately for each P value; a portion 16 for selecting, from an abnormal measurement point group RG of points in the probability map image MAP4 in which at least a prescribed number of measurement points having a P value at most equal to 5% are continuous, and, of those, for which at least a prescribed number of points have a P value at most equal to 1%, measurement points to be used as subsequent measurement points, until ten points have been reached; and a memory 13 for storing the selected subsequent measurement points, wherein the selection of the subsequent measurement points is controlled in such a way that the measurement points RG are selected from the abnormal measurement point group in order of those having a good pattern deviation PDV.
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公开(公告)号：US09622653B2
公开(公告)日：2017-04-18
申请号：US14420511
申请日：2013-07-26
Applicant: Kowa Company, Ltd.
Inventor： Takuya Hara
CPC classification number: A61B3/0025 , A61B3/0058 , A61B3/024 , A61B3/1225 , A61B3/14
Abstract: A perimeter 2 for measuring a visual field by conducting perimetry operations regarding measurement points RG of the subject eye 22a has means 17 for storing perimetry result, means 10, 24 for composing the perimetry result as a map image corresponding to a fundus and indicating it on the display 20, means 13 for obtaining and indicating a structure examination image PC1 of the subject eye 22a, means 16 for superimposing the map image MAP2 on the indicated structure examination image PC1 and indicating the superimposed as a composite image PC2, and means 15 for setting a concerned area NA on the composite image PC2, and means 21 for computing an evaluation value of the perimetry based upon the perimetry result.
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公开(公告)号：US10932663B2
公开(公告)日：2021-03-02
申请号：US16210038
申请日：2018-12-05
Applicant: KOWA COMPANY, LTD.
Inventor： Satoshi Shimada , Takuya Hara
Abstract: In a perimetry to be conducted, designating an inspection region through a region designator, a perimeter is configured to set a required time of the perimetry (upper limit time) through an upper limit condition setter and to determine total number or positions of stimulus presentation spots based upon the upper limit time. In such a configuration, an examinee knows the time to finish the inspection, and is able to highly keep his (her) concentration in comparison with a case where the required time is not known, thereby improving precision of the inspection.
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Patent Agency Ranking
公开(公告)号：US10413170B2
公开(公告)日：2019-09-17
申请号：US15107504
申请日：2014-12-22
Applicant: KOWA COMPANY, LTD.
Inventor： Satoshi Shimada , Takuya Hara
Abstract: Through the present invention, a perimetry result is obtained for a position on a retina surface designated as a position to be tested. As illustrated in the drawing, “the position of a ganglion cell (RGC)” and “the position of a photoreceptor cell (C) for sending information to the ganglion cell (RGC)” are offset on the retina surface (macular part). Here, when position (P1) is designated as a test position for testing the functioning of a ganglion cell at position (P1), the perimeter of the present invention finds “the position (P2) of the photoreceptor cell for sending information to the ganglion cell at position (P1),” presents a visual target at position (P2) rather than position (P1), and tests a visual field. The information of the visual target is sent to the ganglion cell at position (P1), and the functioning of the ganglion cell can therefore be tested. The test result is correlated with the position (P1) and displayed, and the ganglion cell at the designated position (P1) can be therefore be tested.
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公开(公告)号：US20150201828A1
公开(公告)日：2015-07-23
申请号：US14420511
申请日：2013-07-26
Applicant: Kowa Company, Ltd.
Inventor： Takuya Hara
CPC classification number: A61B3/0025 , A61B3/0058 , A61B3/024 , A61B3/1225 , A61B3/14
Abstract: A perimeter 2 for measuring a visual field by conducting perimetry operations regarding measurement points RG of the subject eye 22a has means 17 for storing perimetry result, means 10, 24 for composing the perimetry result as a map image corresponding to a fundus and indicating it on the display 20, means 13 for obtaining and indicating a structure examination image PC1 of the subject eye 22a, means 16 for superimposing the map image MAP2 on the indicated structure examination image PC1 and indicating the superimposed as a composite image PC2, and means 15 for setting a concerned area NA on the composite image PC2, and means 21 for computing an evaluation value of the perimetry based upon the perimetry result.
Abstract translation: 用于通过对对象眼22a的测量点RG执行视野测量操作来测量视野的周长2具有用于存储视野测量结果的装置17，用于将视野测量结果构成为对应于眼底的地图图像并将其指示的装置10,24 显示器20，用于获取和指示被检眼22a的结构检查图像PC1的装置13，用于将地图图像MAP2叠加在指示的结构检查图像PC1上并指示叠加为合成图像PC2的装置16，以及用于 在合成图像PC2上设置有关区域NA，以及用于基于视野测量结果计算视野的评估值的装置21。
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公开(公告)号：US09826897B2
公开(公告)日：2017-11-28
申请号：US15118651
申请日：2015-02-09
Applicant: KOWA COMPANY, LTD.
Inventor： Satoshi Shimada , Takuya Hara
CPC classification number: A61B3/024 , A61B3/0008 , A61B3/0025 , A61B3/0033 , A61B3/0041 , A61B3/0058 , A61B3/0091 , A61B3/12
Abstract: In a perimetry to be conducted, designating an inspection region through a region designator, stimuli are presented to regions separated in an up/down direction, an oblique direction and a right/left direction from the inspection region (“the spaced region”) in addition to the designated inspection region. At the result, examinees are not able to predict to which of both regions, the inspection region and the spaced region the stimuli are presented, thereby obtaining correct inspection results that do not receive a prediction of the examinees.
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公开(公告)号：US20150342452A1
公开(公告)日：2015-12-03
申请号：US14414520
申请日：2013-07-11
Applicant: Kowa Company, Ltd.
Inventor： Takuya Hara
CPC classification number: A61B3/024 , A61B3/0025 , A61B3/0083 , A61B3/0091
Abstract: A perimeter having means for setting a measurement coordinate system CS, a detector for blind spots, a means for measuring a visual field of the same subject eye based on set measurement coordinate systems at a first and second point of time and a memory for storing the position of the blind spot, a detector for detecting the position of the blind spot at the second point of time and computing amount of deviation with the position of the blind spot, and a control for conducting new measurement coordinate based on the deviation (α).
Abstract translation: 具有用于设置测量坐标系CS的装置的周边，用于盲点的检测器，用于在第一和第二时间点基于设定的测量坐标系测量同一被摄体的视野的装置，以及用于存储 盲点的位置，用于检测第二时间点的盲点的位置的检测器和盲点的位置的计算偏差量，以及基于偏差（α）进行新的测量坐标的控制， 。
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公开(公告)号：US11426064B2
公开(公告)日：2022-08-30
申请号：US16633548
申请日：2018-07-23
Applicant: Tohoku University , Kowa Company, Ltd.
Inventor： Toru Nakazawa , Satoshi Shimada , Takuya Hara
Abstract: In examining a patient for progression of glaucoma, a perimeter capable of appropriately assessing visual field progression in a short period of time, therefore lessening the physical burden of testing on the examinee.
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