A fluoroscopy device includes a light source that irradiates an observation site with excitation light and white light a fluorescence-image generating section that acquires a fluorescence image by capturing fluorescence generated in the observation site irradiated with the excitation light a reference-image generating section that acquires a reference image by capturing return light returning from the observation site irradiated with the white light an observation-condition determining section that determines the observation conditions of the observation site on the basis of the reference image acquired by the reference-image generating section a preprocessing section that corrects gradation values of the reference image on the basis of the observation conditions of the observation site and a fluorescence-image correcting section that generates a corrected fluorescence image by dividing the fluorescence image acquired by the fluorescence-image generating section by the reference image whose gradation values have been corrected by the preprocessing section.
