1. A method for measuring the position of a remarkable virtual point (PRV) associated with the face of a subject wearing corrective lenses in a spatial reference point associated with the subject's head, in which said method comprises: a step of acquiring at least two images of all or some of the face of the subject by image acquisition means; a step of estimating the position of the face with respect to the image acquisition means by processing said images; a step of determining, in the images, coordinates (Xpref, Ypref) of one or more reference points associated with the face; characterised in that the remarkable virtual point is visible in at least one image and the position of the remarkable virtual point is associated by a predetermined geometric relationship with the coordinates of the reference point(s), said measurement method also comprises a step of calculating at least one of the coordinates (XPRV, YPRV, ZPRV) of the remarkable virtual point (PRV) at the spatial reference point on the basis of coordinates determined for the reference point(s) by using the geometric relationship.