A method for personalizing an image-displaying electronic device (110, 210, 310, 410) having at least one display parameter of variable value, the device being suitable for displaying an image and for modifying the displayed image depending on the value of the display parameter, said personalizing method comprising adapting the value of the display parameter to a user by way of the following steps: a3) determining by the user a visual activity of the user for viewing images, the visual activity being selected among various possible visual activities, such as reading, writing, video games, looking at photos or films, for viewing images and/or consulting Internet pages by means of the image-displaying electronic device; a) connecting the image-displaying electronic device (110, 210, 310, 410) to a user database (100, 101), determining and recording in the user database (100, 101) a digital record comprising at least one value of a parameter of evaluation of the visual and oculomotor profile of the user, said at least one value comprising a measurement of the visual acuity of this user, and at least one value of a parameter associated with the visual activity determined at step a3); b) connecting the image-displaying electronic device (110, 210, 310, 410) to a display database (100, 102) and creating, in the display database (100, 102), a digital record comprising a plurality of display parameter values associated with the image-displaying electronic device (110, 210, 310, 410) and with an identifier of this image-displaying electronic device (110, 210, 310, 410), the digital record being stored in a register of the display database (100, 102) comprising a plurality of digital records associated with a plurality of image-displaying electronic devices (110, 210, 310, 410), each record of one image-displaying electronic device of the register being associated with a single identifier; c) selecting, with regard to viewing by the user of an image displayed by the image-displaying electronic device (110, 210, 310, 410), an optimum value of the display parameter from the plurality of those display parameter values of the digital record which are associated with the image-displaying electronic device (110, 210, 310, 410) in the display database (100, 102), depending on said digital record of said at least one value of a parameter of evaluation of the visual and oculomotor profile of the user associated with this user in the user database (100, 101) and depending on the digital record of the at least one value of a parameter associated with the visual activity associated with this user in the user database (100, 101); and d) automatically applying the optimum value of this image display parameter to the image-displaying electronic device so as to improve the recognition and/or the readability of the displayed image and the visual comfort of the user. a) connecting the image-displaying electronic device (110, 210, 310, 410) to a user database (100, 101), determining and recording in the user database (100, 101) a digital record comprising at least one value of a parameter of evaluation of the visual and oculomotor profile of the user, said at least one value comprising a measurement of the visual acuity of this user, and at least one value of a parameter associated with the visual activity determined at step a3); b) connecting the image-displaying electronic device (110, 210, 310, 410) to a display database (100, 102) and creating, in the display database (100, 102), a digital record comprising a plurality of display parameter values associated with the image-displaying electronic device (110, 210, 310, 410) and with an identifier of this image-displaying electronic device (110, 210, 310, 410), the digital record being stored in a register of the display database (100, 102) comprising a plurality of digital records associated with a plurality of image-displaying electronic devices (110, 210, 310, 410), each record of one image-displaying electronic device of the register being associated with a single identifier; c) selecting, with regard to viewing by the user of an image displayed by the image-displaying electronic device (110, 210, 310, 410), an optimum value of the display parameter from the plurality of those display parameter values of the digital record which are associated with the image-displaying electronic device (110, 210, 310, 410) in the display database (100, 102), depending on said digital record of said at least one value of a parameter of evaluation of the visual and oculomotor profile of the user associated with this user in the user database (100, 101) and depending on the digital record of the at least one value of a parameter associated with the visual activity associated with this user in the user database (100, 101); and d) automatically applying the optimum value of this image display parameter to the image-displaying electronic device so as to improve the recognition and/or the readability of the displayed image and the visual comfort of the user.