Patent ID: 8556423
Filing Date: 2013-10-15
Classification: A61B,G01B

Abstract:
1. A method for obtaining a tomographic image of a fundus by optical coherence tomography, the method comprising the steps of: setting a line, based on which the fundus tomographic image is to be obtained, on a first front image of the fundus, the first front image being a still image; establishing a positional correspondence between a second front image of the fundus and the first front image, the first front image being the still image on which the line is set, by matching the first and second front images, the second front image being obtained by a front optical system for obtaining a front image of the fundus, the front optical system being provided to an interference optical system for obtaining the fundus tomographic image, wherein a relationship between a line on the second front image and a scanning position of an optical scanner provided to the interference optical system is predetermined; specifying a line on the second front image based on positional information on the line set on the first front image, and the established positional correspondence; and obtaining the fundus tomographic image that corresponds to the lines on the first and second front images by scanning measurement light with the use of the optical scanner provided to the interference optical system based on a scanning position corresponding to the line that is specified on the second front image, wherein the second front image is obtained by the front optical system that comprises a photodetector other than a photodetector provided to the interference optical system.