PROBLEM TO BE SOLVED: To provide a tomographic image in which, even when tracking is carried out according to movement of an examined eye and a relatively great movement per unit time happens during the movement, distortion caused by the great movement is reduced.SOLUTION: An optical interference tomographic imaging device includes change means for changing a light path length difference between the light path length of a measurement light and the light path length of a reference light, and control means for controlling the change means on the basis of a plurality of tomographic images of an examined eye obtained in different times so that the light path length difference is corrected between one scan and the next scan by scan means.
