Optical coherence tomographic imaging apparatus and method for controlling the same

An optical coherence tomographic imaging apparatus comprising:

• an image acquisition unit configured to acquire a plurality of images of the subject's eye at different times;
• a tomographic image acquisition unit configured to acquire a plurality of tomographic images of the subject's eye based on interference light produced by the interference between return light from the subject's eye irradiated with measuring light via a scanning unit, and reference light corresponding to the measuring light;
• a movement amount acquisition unit configured to acquire the amount of subject's eye movement based on the plurality of images;
• and
• a control unit configured to, in a case the amount of subject's eye movement before a scan by the scanning unit exceeds the threshold value, control the scanning unit to restart scan of the scanning unit from a scanning position before the scan.

An optical coherence tomographic imaging apparatus comprising:

• an image acquisition unit configured to acquire a plurality of images of the subject's eye at different times;
• a tomographic image acquisition unit configured to acquire a plurality of tomographic images of the subject's eye based on interference light produced by the interference between return light from the subject's eye irradiated with measuring light via a scanning unit, and reference light corresponding to the measuring light;
• a detection unit configured to detect a blink of the subject's eye before a scan by the scanning unit based on the plurality of images;
• and
• a control unit configured to, in a case the blink is detected, controls the scanning unit to restart scan of the scanning unit from a scanning position before the scan.

A method for controlling an optical coherence tomographic imaging apparatus for acquiring a plurality of tomographic images of the subject's eye based on interference light produced by the interference between return light from the subject's eye irradiated with measuring light via a scanning unit, and reference light corresponding to the measuring light, the method comprising:

• acquiring the amount of subject's eye movement based on a plurality of images of the subject's eye acquired at different times;
• determining whether the amount of subject's eye movement before a scan by the scanning unit exceeds a threshold value;
• and
• controlling, in a case the amount of subject's eye movement before the scan is equal to or smaller than the threshold value, the scanning unit to perform scanning position correction between the scan and the next scan based on the amount of movement.