The present invention provides a method and device of measuring the retinal stray light in the eye of a subject, comprising presenting to the subject a flickering stray light from a stray light source; presenting to the subject compensation light so as to undercompensate said part of the flickering stray; presenting to the subject compensation light, the compensation light flickering with a modulation depth so as to eventually overcompensate the flickering light being imaged on the retina; and determining from the results of a sequence of comparisons using different parameter values between the resulting retinal light flickering as perceived by the subject for the undercompensated test area and the eventually overcompensated test area a stray light parameter.