PROBLEM TO BE SOLVED: To provide a measuring device, a measuring method, and a program that can improve usefulness.SOLUTION: A measuring device 100 comprises a first laser light source 121 that emits laser light of a first wavelength, a second laser light source 122 that emits laser light of a second wavelength different from the first wavelength, light receiving parts 131 and 132 that receive scattered light of the laser light from a region to be examined, and a control part 140 that calculates a first value on the basis of output of the light receiving part 131 based on the reception of the scattered light of the laser light of the first wavelength, calculates a second value on the basis of output of the light receiving part 132 based on the reception of the scattered light of the laser light of the second wavelength, and measures an oxygen saturation degree on the basis of a ratio of the first value to the second value.SELECTED DRAWING: Figure 2【課題】有用性を向上可能な測定装置、測定方法及びプログラムを提供する。【解決手段】測定装置１００は、第１波長のレーザ光を射出する第１レーザ光源１２１と、第１波長と異なる第２波長のレーザ光を射出する第２レーザ光源１２２と、被検部位からのレーザ光の散乱光を受光する受光部１３１及び１３２と、第１波長のレーザ光の散乱光の受光に基づく受光部１３１の出力に基づいて第１の値を算出し、第２波長のレーザ光の散乱光の受光に基づく受光部１３２の出力に基づいて第２の値を算出し、第２の値に対する前記第１の値の割合に基づいて、酸素飽和度を測定する制御部１４０と、を備える。【選択図】図２
