Patent ID: 11911108
Assignee: TOPCON CORPORATION
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A blood flow measurement apparatus comprising:
a blood flow measuring unit that includes an optical system for applying an optical coherence tomography (OCT) scan to a fundus of a subject's eye, and processing circuitry that is configured to obtain blood flow information based on data acquired by the OCT scan;
a movement mechanism including at least one actuator configured to move the optical system;
a controller circuit configured to apply a first movement control to the movement mechanism to move the optical system in a first direction orthogonal to an optical axis of the optical system by a predetermined distance from the optical axis; and
the processing circuitry further configured to judge occurrence of vignetting based on a detection result of return light of light incident on the subject's eye through the optical system after the first movement control and produce a vignetting judgment result,
wherein the controller circuit applies a second movement control to the movement mechanism to further move the optical system based on Raphe vignetting judgement result.