OCT apparatus

1. An OCT apparatus comprising:

an OCT optical system that has a light splitter splitting light from an OCT light source to light travelling a measurement light path and light travelling to a reference light path, and a detector detecting a spectrum interference signal of measurement light guided to a subject eye through the measurement light path and reference light from the reference light path; and

a processor that processes the spectrum interference signal to generate OCT data,

wherein the processor performs at least complementary processing on an overlapping region of a real image and a virtual image 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.

2. The OCT apparatus according to claim 1 , further comprising:

an optical path length adjuster that change an optical path length of at least one of the measurement light path and the reference light path,

wherein the processor controls the optical path length adjuster to sequentially acquires the spectrum interference signals serving as a basis of the plurality of OCT data obtained with the different optical path lengths.

3. The OCT apparatus according to claim 2 , further comprising:

an optical scanner that scans the measurement light guided to the subject eye on the subject eye,

wherein the processor controls the optical scanner and the optical path length adjuster to perform:

a first scanning control of scanning the measurement light on each of a plurality of scanning lines with a first optical path length, and

a second scanning control of scanning the measurement light on each of a plurality of scanning lines with a second optical path length different from the first optical path length after the first scanning control is performed.

4. The OCT apparatus according to claim 1 ,

wherein the processor generates combined OCT data based on a representative value of the plurality of OCT data as the complementary processing.

5. The OCT apparatus according to claim 1 ,

wherein the processor replaces data of the overlapping region of the real image and the virtual image in OCT data with other OCT data in which the real image and the virtual image overlap in a region different from the overlapping region as the complementary processing.

6. The OCT apparatus according to claim 1 ,

wherein the processor performs matching processing for correcting a positional deviation between the plurality of OCT data obtained with the different optical path lengths.

7. The OCT apparatus according to claim 1 ,

wherein the processor detects either of a real image region and a virtual image region in OCT data, and performs the complementary processing with excluding OCT data of the detected region.

8. The OCT apparatus according to claim 1 ,

wherein the processor enables to output OCT data generated by processing the spectrum interference signal to a display, and switches a display state of the display between a first imaging mode for obtaining OCT data at a fundus center area of the subject eye and a second imaging mode for obtaining OCT data on a wide-angle region including the fundus center area and a fundus peripheral area of the subject eye, and

in a case where the second imaging mode is set, the processor outputs both front and rear image regions with respect to a zero delay position on OCT data to the display, and outputs OCT data in which the complementary processing is performed to the display.