The measurement method involves a step for displaying on a display screen an image in which one corresponding region exclusively that has been selected from regions provided has a contrast difference when on and when off a step for enlarging the contrast difference in the image display in cases which an operation for an operation unit accompanying the flickering perception of a subject is assessed to not be correctly specifying the one aforementioned selected region, and, in cases which a correct specification has been assessed, recording the contrast difference at that point in a recording unit as the measurement contrast difference and a step for assessing whether the aforementioned recorded measurement contrast difference has converged, reducing the contrast difference when convergence has not been assessed, and determining the convergence value of the aforementioned measurement contrast difference as information corresponding to the flickering perception threshold when convergence has been assessed.
