1. A fluoroscopic device comprising: a light source unit that emits illumination light, which is in a wavelength range between 370 nm and 450 nm inclusive or between 500 nm and 600 nm inclusive to be absorbed by a blood vessel, and excitation light, which generates agent fluorescence by exciting a fluorochrome accumulated specifically in a lesion, to an examination site; an image acquisition unit that acquires an image by irradiating the same examination site with the illumination light and the excitation light and photographing the respective reflected light and fluorescence obtained; and an image processing unit that acquires a reference image by smoothing the luminance of the reflected-light image acquired by the image acquisition unit and corrects the fluorescence image on the basis of the acquired reference image.