An optical image measurement device (1) comprises: an interference-light generator (150) configured to generate an interference light by splitting a low-coherence light (20) into a signal light (25) and a reference light (LR) and superimposing the signal light having passed through an eye (E) and the reference light having passed through a reference object (174) a detector (180) configured to detect the generated interference light (LC) a calculator (213) configured to obtain intensity distribution of the interference light in the eye, based on a result of the detection by the detector a determining part (214) configured to determine a projection position of the signal light to the eye, based on the obtained intensity distribution and an image forming part (220) configured to form an image of the eye, based on a result of detection of a new interference light based on a new signal light projected toward the determined projection position and a new reference light having passed through the reference object.
