In order to acquire a tomographic image of the eye to be inspected with high precision even in case where an optical path length and intensity vary depending on a scanned position in an OCT apparatus acquiring the tomographic image of a predetermined part of an object to be inspected, based on the intensity of interference light obtained by combining return light from the object that has been irradiated with the measuring light, with reference light corresponding to the measuring light, includes: a scanning optical system which scans the object with the measuring light in an optical path of the measuring light an image forming unit which generates the tomographic image based on the intensity of the interference light and an image correcting unit which subjects the tomographic image to a correction process appropriate to the scanned position with the measuring light on the object.
