Landmark |
Definition |
Glabella (G) |
The most prominent midpoint of the frontal bone, between the eyebrows. |
Nasion (N) |
The deepest point of the nasal bridge, on the intersection between the midline of the nasal root and the nasofrontal suture. |
Endocanthion left (EnL) and right (EnR) |
The point at the inner commissure of the left and right eye fissures. |
Exocanthion left (ExL) and right (ExR) |
The point at the outer commissure of the left and right eye fissures. |
Pronasale (Prn) |
The most protruded point of the apex nasi, identified in lateral view of the natural head position. |
Subnasale (Sn) |
The midpoint of the angle at columella base. |
Alare left (AlL) and right (AlR) |
The most lateral point on each of the alare contours. |
Labiale superior (Lab sup) |
The most prominent midpoint of the upper vermilion line. |
Labiale inferior (Lab inf) |
The most prominent midpoint of the lower vermilion line. |
Cheilion left (ChL) and right (ChR) |
The most lateral points of the labial commissures, joining the superior and inferior lips. |
Pogonion (Pog) |
The most anterior midpoint of the soft tissue of the chin. |