Measurement of the malar height. First, drawn horizontal line passing through the anterior edge of the foramen magnum on the coronal plane of orbital PCT. Next draw a vertical line from this line to the malar eminence on both sides. In this figure, the measurement on the non-operated side was 63.6 mm, and that on the operated side was 62.6 mm. The difference between the two distances was 1 mm in this patient.