Patent ID: 8770752
Filing Date: 2014-07-08
Classification: A61B

Abstract:
1. An ophthalmic apparatus comprising: 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 a fundus 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 the blood cell in the first image is scanned with the measurement beam by the scanning unit and time when the blood cell in the second image is scanned with the measurement beam by the scanning unit, wherein the difference is determined based on a time between frames and on a time for scanning the measurement beam for the displacement.