Method for measuring at least one morpho-geometric parameter of an individual wearing spectacles , said method employing an autonomous information-processing device comprising a screen , a target , a compact image acquisition system provided with a means for determining its inclination and connected to said screen , and a processor for controlling the image acquisition system and for processing the images obtained, said method comprising the following steps: - Adjustment of the inclination of the image acquisition system in order to remain within a permissible angular range, said image acquisition system being provided with a device for compensating for its inclination, so as to obtain an image of the individual's eyes that is always centred on the screen whatever the inclination of said system in the permissible angular range; - Adjustment of the height of the image acquisition system such that the individual can view the target along a substantially horizontal vision axis; - Observation of the target by the individual, who is in a comfortable position that can be adopted without effort, the spectacles occupying a natural position on the face of the individual; - Acquisition of at least one image of the eyes and of the frame in said observation position by means of the image acquisition system; - Processing of said at least one image by the processor in order to determine each morpho-geometric parameter of the individual from the position of the pupils and from the inclination of the spectacles ; - Recovery of the results of the measurements; characterized in that the adjustment of the images is effected by way of a chart belonging to the screen and represented by a rectangle of constant size, the method including a step of determining the condition according to which the frame and the eyes of the individual are inscribed within this reference chart , and said adjustment being satisfactory when this condition is fulfilled. - Adjustment of the inclination of the image acquisition system in order to remain within a permissible angular range, said image acquisition system being provided with a device for compensating for its inclination, so as to obtain an image of the individual's eyes that is always centred on the screen whatever the inclination of said system in the permissible angular range; - Adjustment of the height of the image acquisition system such that the individual can view the target along a substantially horizontal vision axis; - Observation of the target by the individual, who is in a comfortable position that can be adopted without effort, the spectacles occupying a natural position on the face of the individual; - Acquisition of at least one image of the eyes and of the frame in said observation position by means of the image acquisition system; - Processing of said at least one image by the processor in order to determine each morpho-geometric parameter of the individual from the position of the pupils and from the inclination of the spectacles ; - Recovery of the results of the measurements; characterized in that the adjustment of the images is effected by way of a chart belonging to the screen and represented by a rectangle of constant size, the method including a step of determining the condition according to which the frame and the eyes of the individual are inscribed within this reference chart , and said adjustment being satisfactory when this condition is fulfilled. <EOS>