List of the 30 Landmarks Used in the Geometrix Study

Label

Name

Description*

g

Glabella

The most prominent midline point between the eyebrows

sl

Sublabiale

Determines the lower border of the lower lip and upper border of the chin

pg

Pogonion

The most anterior midpoint of the chin

en

Endocanthion (l, r)

The point at the inner commissure of the eye fissure

ex

Exocanthion (l, r)

The point at the outer commissure of the eye fissure

p

Pupil (l, r)

Determined when the head is in the rest position and the eye is looking straight forward

pi

Palpebrale inferius (l, r)

The lowest point in the mid-portion of the free margin of each lower eyelid

se

Sellion

The deepest landmark located in the bottom of the nasofrontal angle

prn

Pronasale

The most protruded point of the apex nasi

al

Alar (l, r)

The most lateral point on each alar contour

c’

Highest point of columella (l, r)

The point on each columella crest, level with the tip of the corresponding nostril

ls

Labiale superius

The midpoint of the upper vermillion line

li

Labiale inferius

The midpoint of the lower vermillion line

sto

Stomion

The imaginary point at the crossing of the vertical facial midline and the horizontal labial fissure between gently closed lips, with the teeth shut in the natural position

ch

Cheilion (l, r)

The point located at each labial commissure

sa

Superaurale (l, r)

The highest point on the free margin of the auricle

sba

Subaurale (l, r)

The lowest point on the free margin of the ear lobe

pa

Postaurale (l, r)

The most posterior point on the free margin of the ear

obi

Otobasion inferius (l, r)

The point of attachment of the ear lobe to the cheek