PROBLEM TO BE SOLVED: To more accurately calculate a blood flow velocity, in an optical image pickup device and method used for ophthalmic examination or the like.SOLUTION: This blood velocity calculation apparatus includes: an irradiation means irradiating an examined eye with measurement light while performing scanning by a scanning means an acquisition means acquiring a first image of the examined eye based on returned light from the examined eye by the measurement light irradiated by the irradiation means, and a second image of the examined eye on time different from the first image an indication means indicating a first position of the first image and a second position of the second image and a calculation means calculating the blood flow velocity of the examined eye based on the first and second positions and a scanning velocity and a scanning interval of the scanning means.COPYRIGHT: (C)2012,JPO&INPIT【課題】 より正確に血流速を算出すること。【解決手段】 本発明に係る血流速算出装置は、走査手段により走査しながら被検眼に測定光を照射する照射手段と、前記照射手段で照射した測定光による前記被検眼からの戻り光に基づいて該被検眼の第一の画像と、該第一の画像とは異なる時間に該被検眼の第二の画像とを取得する取得手段と、前記第一の画像の第一の位置と前記第二の画像の第二の位置とを指示する指示手段と、前記第一及び第二の位置と前記走査手段の走査速度と走査間隔とに基づいて前記被検眼の血流速を算出する算出手段と、を有する。【選択図】 図1
