The invention relates to a display method for displaying an image on a screen (24) of a headset (16) of a system (12) for aiding navigation, the system (12) for aiding navigation comprising the headset (16), and a calculator (18). The method comprises the successive steps: of measuring the orientation of the headset (16) of the operator furnished with the headset (16); of processing a first image having a first number of pixels so as to obtain a first processed image; of extracting a part of the first processed image as a function of the measured orientation of the headset (16) so as to obtain a second image, the second image having a second number of pixels strictly lower than the first number of pixels; and of dispatching by the calculator (18) to the headset (16) of the second image for display on the screen (24).