Ophthalmic apparatus, ophthalmic system, processing apparatus, and blood flow velocity calculation method
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United States of America Patent
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Jul 8, 2014
Grant Date -
Jun 7, 2012
app pub date -
Nov 28, 2011
filing date -
Dec 2, 2010
priority date (Note) -
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Abstract
An ophthalmic apparatus includes an irradiation unit configured to irradiate a subject's eye with a measurement beam scanned by a scanning unit, an acquisition unit configured to acquire an image of the subject's eye based on a return beam returned from the subject's eye, of the measurement beam irradiated by the irradiation unit, and a calculation unit configured to calculate a blood flow velocity of the subject's eye based on a displacement between a position of a blood cell in a first image obtained by the acquisition unit and a position of the blood cell in a second image obtained by the acquisition unit at a different time from the first image and on a difference between time when an image of the blood cell in the first image is obtained and time when an image of the blood cell in the second image is obtained.
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