A light emission section includes a plurality of light sources and emits near infrared low coherent light beams having different specific wavelengths to a light interference section. The light interference section allows the near infrared low coherent light beams to pass therethrough toward the eyeground and partially reflects the beams toward a movable mirror. Measurement light reflected by the eyeground and reference light reflected by the movable mirror interfere at the light interference section. Resultant interference light rays propagate to a light detection section, which calculates the profile of the eyeground from the light quantities of the interference light rays, and calculates the oxygen saturation SO<SUB>2 </SUB>from the light quantity distributions of the near infrared low coherent light beams emitted from the light emission section and the light quantities of the received interference light rays. A display section displays the calculated profile and oxygen saturation SO<SUB>2 </SUB>in a superposed manner.
OPTICAL COHERENCE TOMOGRAPH