Anatomical landmark/length

Definition

Maxillofrontal point (Mf)

The junction between the frontomaxillary suture and medial orbital rim

Ectoconchion point (Ec)

The junction between the lateral orbital rim and the horizontal line that divides the orbital foramen into two equal parts

Supraorbital point (Os)

The superior junction between the superior orbital rim and the perpendicular bisector line of line Mf-Ec

Infraorbital point (Oi)

The inferior junction between the inferior orbital rim and the perpendicular bisector line of line Mf-Ec

Optic foramen point (Of)

Optic foramen

Orbital breadth

Mf-Ec

Orbital height

Os-Oi

Medial wall length

Mf-Of

Lateral wall length

Ec-Of

Orbital roof length

Os-Of

Orbital floor length

Oi-Of

Intraorbital distance (IOD)

Mf-Mf

Extraorbital distance (EOD)

Ec-Ec