Provided are an illumination optical system (100, 13, 15 . . . ) for projecting illumination light from an illumination light source onto a fundus of a subject eye a photography optical system (22, 42, 31, 32 . . . ) for taking an image of the fundus illuminated by the illumination light a first electronic infrared imaging means (40) for taking a video for observing the fundus of the subject eye during the subject eye observation period an exciter filter (13) for photographing natural fluorescence from the fundus of the subject eye and a barrier filter (BF3) for photographing natural fluorescence from the fundus of the subject eye respectively capable of being inserted into and retracted from optical paths of the illumination optical system and the photography optical system after the subject eye observation period in which the fundus of the subject eye is observed using the first electronic imaging means and prior to taking a still image of the subject eye by a second electronic imaging means (53) and an adjustment means for varying the ratio of the visible light component to the infrared light component in the illumination light.
