Invention Grant
- Patent Title: Ophthalmic measuring method and apparatus
- Patent Title (中): 眼科测量方法及仪器
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Application No.: US11434657Application Date: 2006-05-15
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Publication No.: US08996097B2Publication Date: 2015-03-31
- Inventor: Norihiko Yokoi , Shigeru Kinoshita , Takayoshi Suzuki , Yutaka Mizukusa , Osamu Yamamoto
- Applicant: Norihiko Yokoi , Shigeru Kinoshita , Takayoshi Suzuki , Yutaka Mizukusa , Osamu Yamamoto
- Applicant Address: JP JP JP
- Assignee: Norihiko Yokoi,Shigeru Kinoshita,Kowa Company Ltd.
- Current Assignee: Norihiko Yokoi,Shigeru Kinoshita,Kowa Company Ltd.
- Current Assignee Address: JP JP JP
- Agency: Adams & Wilks
- Priority: JP2005-142035 20050516
- Main IPC: A61B6/00
- IPC: A61B6/00 ; A61B3/14 ; A61B1/04 ; A61B3/10 ; A61B5/00 ; G06T7/00

Abstract:
In an ophthalmic measuring method, a traceable marker in particulate form is administered to the lachrymal fluid of a subject's eye, and the lachrymal fluid is irradiated with illuminating light. Images of the illuminated lachrymal fluid are electronically captured respectively at different times. Two images from among the captured images are selected, with each of the two selected images displaying the traceable marker. A characteristic point of each of the two selected images is specified. A movement speed of the traceable marker is measured based on positions thereof in the two selected images and on a time difference from specifying the characteristic point of one of the two selected images to specifying the characteristic point of the other of the two selected images. The measured movement speed of the traceable marker is outputted as the movement speed of the lachrymal fluid of the subject's eye.
Public/Granted literature
- US20060263297A1 Ophthalmic measuring method and apparatus Public/Granted day:2006-11-23
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