An OCT apparatus (1) includes an OCT optical system (100) that has a light splitter (104) splitting light from an OCT light source (102) to light travelling to a measurement light path (152) and light travelling to a reference light path (106) and a detector (120) detecting a spectrum interference signal of measurement light guided to a subject eye (E) through the measurement light path (152) and reference light from the reference light path (106), and a processing unit (70) that processes the spectrum interference signal to generate OCT data. The processing unit (70) performs at least complementary processing on an overlapping region of a real image (R) and a virtual image (M) in OCT data based on a plurality of OCT data obtained with different optical path lengths when detecting the spectrum interference signal, and generates OCT data subjected to the complementary processing.
OCT APPARATUS AND OCT IMAGE PROCESSING PROGRAM