An optical coherence tomography method according to the present invention comprises the steps of dividing an object to be measured into a plurality of measurement regions adjacent to one another in a direction of irradiation of a measurement light, and acquiring a measurement image for every measurement region based on a wavelength spectrum of a coherent light correcting, for every measurement region, a contrast of the measurement image of the measurement region and acquiring, for every measurement region, a tomographic image from the corrected measurement image.
