FLUORESCENCE OBSERVATION DEVICE AND METHOD FOR OPERATING FLUORESCENCE OBSERVATION DEVICE

摘要

PROBLEM TO BE SOLVED: To allow an operator to reliably and clearly recognize the presence of a lesion part within an observation visual field.SOLUTION: A fluorescence observation device 1 is provided with: an imaging element 19 for acquiring a fluorescence image by imaging fluorescence generated in a subject A by being irradiated with excitation light from an excitation light source 3; a sensitivity adjustment part 23 for setting sensitivity of the imaging element 19 to the fluorescence on the basis of a gradation value of the fluorescence image acquired by the imaging element 19; an extraction part 25 for extracting an area that has a larger gradation value than a prescribed threshold value from the fluorescence image acquired by the imaging element 19 by the sensitivity set by the sensitivity adjustment part 23; a notification part 25 for presenting information indicating the presence of an area extracted by the extraction part 25 to an operator; a display part 7 for displaying the fluorescence image; and a display switching part 24 for causing the display part 7 to display the fluorescence image when the sensitivity set by the sensitivity adjustment part 23 to the imaging element 19 is the predetermined threshold value or lower, and causing the notification part 25 to present information when the sensitivity is greater than the predetermined threshold value.