The technical problem of the present invention is to provide a visual function measurement device that allows for the appropriate confirmation of effects of prescription eyeglasses or the like. This visual function measurement device is characterized by comprising: a measurement optical system that projects a measuring light onto the fundus of eyes to be examined and measures the refractive power of the eyes to be examined on the basis of reflected light from the fundus； a fixation target presenting optical system that, with respect to the eyes to be examined, allows for changing the presentation position of a fixation target to be presented to the eyes to be examined； a correction means that drives a correction optical system and that corrects the eye refractive power of the eyes to be examined； and a control means that calculates accommodative constriction parameters of the eyes to be examined from changes over time of the refractive power of the eyes which is measured by the measurement optical system, the control means acquiring the strength information of the eyeglasses a subject wears, changing the correction state of the eyes to be examined by controlling the correction means on the basis of the strength information, and calculating the accommodative restriction parameters of the eyes to be examined in the correction state based on the strength information.La présente invention vise à fournir un dispositif de mesure de fonction visuelle qui permet la confirmation appropriée d'effets de lunettes de prescription ou analogues. Ce dispositif de mesure de fonction visuelle est caractérisé par le fait qu'il comprend : un système optique de mesure qui projette une lumière de mesure sur le fond des yeux à examiner et mesure la puissance de réfraction des yeux à examiner, sur la base de la lumière réfléchie par le fond ； un système optique de présentation de cible de fixation qui, par rapport aux yeux à examiner, permet de changer la position de présentation d'une cib
