Patent ID: 8322855

Claim:
Method for establishing the visual behaviour of a person comprising: recording the movement of a person's head while performing a visual task; recording the movement of at least one of the person's eyes while performing a visual task; determining the orientation of the eye relative to the orientation of the head in different points in time; and determining the amount of time the eye has been held in each orientation; wherein recording the eye movement includes determining the line of eyesight orientation; making one coordinate of eye orientation the horizontal angle of the line of eyesight with regard to a reference plane and making another coordinate of eye orientation the vertical angle of the line of eyesight with regard to a reference plane; wherein the amount of time that the eye has been held in each orientation is determined by grouping the records of said orientations into finite intervals, assigning to each of these intervals the amount of time the eye has been held in the orientations contained therein, and grouping the amount of records contained in each interval; wherein the planes of orientation are broken down into finite intervals, and the number of records of orientations contained in each interval are counted and represented on a three-dimensional histogram in which the height is a function of said amounts of records of orientations, and by different colors marking each interval which frequency is a function of said amount of records of orientations.