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Face ratio measurement method. Using the facial measurement method, a coordinate system is established for the stimuli faces, using the line of the inside of the eye as the X-axis and the midline of the nose as the Y-axis. The intersection of the X-axis and the Y-axis (O), head length (AB), face width (CD), eye width (EF) and length (GH), eye aspect ratio (GH/EF), and eye-to-face length ratio (GH/EF) were evaluated.
