Cephalometric parameters for assessing the harmony, aesthetics and proportions of the face

An apparatus for performing a photometric cephalometric analysis, comprising:

• at least one processor;
• and
• at least one memory coupled to the at least one processor and storing processor-executable instructions,
• wherein the processor-executable instructions are configured, when executed by the at least one processor, to cause the at least one processor to:
• receive an image of a face of a patient in a frontal plane, the image showing a head of the patient positioned along a Frankfurt horizontal plane;
• based on the image, calculate a facial proportionality angle, the facial proportionality angle being formed by two rays going from a vertex located at a gnathion point to zygomatic points on both sides of the face, the gnathion point being a point of maximum projection of a soft-tissue part of a chin of the patient in a sagittal plane, the zygomatic points being aligned with each other in a transverse plane and located on a skin surface above most protruding points of zygomatic bones on both sides of the face;
• based on the facial proportionality angle, determine a relationship between a visual interzygomatic distance and a visual morphological height of the face, the visual interzygomatic distance being a distance between the zygomatic points, the visual morphological height of the face being a distance between the gnathion point and a soft-tissue nasion point;
• and
• output, to a user, the determined relationship between the visual interzygomatic distance and the visual morphological height of the face.