Method for estimating a distance separating a pair of glasses and an eye of the wearer of the pair of glasses

A method for estimating an eye/spectacles distance (VG) includes the steps of: a) acquiring at least two images of the wearer (1), in which the head (10) of the wearer exhibits various angular positions; b) determining, for each image acquired, an angle of inclination (α301) of the head of the wearer with respect to the image sensor; c) acquiring at least two simulated values (VG1, VG2, VG3) of the eye/spectacles distance sought; d) calculating, for each image acquired and with each simulated value, a morphological distance (EG1301, EG2301, EG3301) between the eye of the wearer and a median plane of the head of the wearer, having regard to the angle of inclination; and e) selecting, from among the simulated values, the one closest to the eye/spectacles distance of the wearer, as a function of the head/plane distances calculated in step d).