A measurement method for determining a value of a visual correction for near vision distance of an individual in a natural posture for near vision wherein a recognizing limit distance is determined so that the individual is able to detect at least one predetermined symbol disposed farther than said limit distance relatively to the individual and unable to detect said at least one predetermined symbol disposed closer to the individual than said recognizing limit distance, in which an electronic device is displaced in front of the face and eyes of the individual to change a frontal distance between his/her eyes and the electronic device, wherein said visual correction comprises an accommodation compensation need, wherein the electronic device is a portable medium and comprises at least a display screen, an optical sensor and an input interface, the electronic device ensuring that: - the display screen displays the at least one predetermined symbol, - the optical sensor records images of the face of the individual, at least while the distance between his/her eyes and the electronic device changes, - the distance between the eyes of the individual and the electronic device is computed from the images, and - when the input interface receives from the individual an entry corresponding to the detection by the individual of the predetermined symbol, the corresponding computed distance is kept as being the recognizing limit distance, wherein the value of visual correction for the near vision is expressed as an ADDITION in diopter that is computed with: ADDITION = 1 / NV − 1 / D where NV is the near vision distance in length unit chosen for the individual and D is the recognizing limit distance. in which an electronic device is displaced in front of the face and eyes of the individual to change a frontal distance between his/her eyes and the electronic device, wherein said visual correction comprises an accommodation compensation need, wherein the electronic device is a portable medium and comprises at least a display screen, an optical sensor and an input interface, the electronic device ensuring that: - the display screen displays the at least one predetermined symbol, - the optical sensor records images of the face of the individual, at least while the distance between his/her eyes and the electronic device changes, - the distance between the eyes of the individual and the electronic device is computed from the images, and - when the input interface receives from the individual an entry corresponding to the detection by the individual of the predetermined symbol, the corresponding computed distance is kept as being the recognizing limit distance, wherein the value of visual correction for the near vision is expressed as an ADDITION in diopter that is computed with: ADDITION = 1 / NV − 1 / D - the display screen displays the at least one predetermined symbol, - the optical sensor records images of the face of the individual, at least while the distance between his/her eyes and the electronic device changes, - the distance between the eyes of the individual and the electronic device is computed from the images, and - when the input interface receives from the individual an entry corresponding to the detection by the individual of the predetermined symbol, the corresponding computed distance is kept as being the recognizing limit distance, wherein the value of visual correction for the near vision is expressed as an ADDITION in diopter that is computed with: ADDITION = 1 / NV − 1 / D where NV is the near vision distance in length unit chosen for the individual and D is the recognizing limit distance. <EOS>