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 |