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| | Variable measured | Definition | Definition using landmarks |
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| Anteroposterior measurements |
| (1) | Upper lip to S-line (mm) | Position of the upper lip to a line passing through a midpoint between the pronasale and subnasale and soft tissue Pog | Ls to S-line |
| (2) | Lower lip to S-line (mm) | Position of the lower lip to a line passing through a midpoint between the pronasale and subnasale and soft tissue Pog | Li to S-line |
| (3) | Upper lip to Sn V (mm) | Position of the upper lip to a line parallel to a true vertical line passing through the subnasale | Ls to SnV line |
| (4) | Lower lip to Sn V (mm) | Position of the lower lip to a line parallel to a true vertical line passing through the subnasale | Li to SnV line |
| (5) | Chin to Sn V (mm) | Soft tissue Pog′ to a line parallel to true a vertical line passing through the subnasale | Pog′ to SnV line |
| (6) | Facial convexity angle° | Convexity of the face (without the nose) | N′ B′ A′ |
| (7) | Angle of facial convexity° | Convexity of the face (with the nose) | Pn A′ Pog′ |
| (8) | Mentolabial sulcus (mm) | The distance from the lower chin lower lip line to the maximum depth of the mentolabial sulcus | Li Pog′ line to the sulcus |
| (9) | Chin thickness (mm) | The distance between the soft tissue and hard tissue Pog | Pog-Pog′ distance |
| (10) | Nasofacial angle° | The angle between the glabella-soft tissue nasion and tangent to midnose | G-Pog′ line and midnose tangent |
| (11) | NLA° | Nasolabial angle | Pn-Sn-Ls |
| (12) | Nasomental angle° | Soft tissue nasion, the tip of the nose, soft tissue chin | N′ Pn Pog′ |
| (13) | Nasal projection° | Angle formed by the soft tissue nasion, tip of the nose, and subnasale | N′ Pn Sn |
| (14) | Nasal length (mm) | Distance from the tip of the nose to the subnasale | Pn-Sn distance |
| (15) | Nasofrontal angle° | The angle between the glabella-soft tissue nasion line and tangent of the midnose | G-N′-midnose tangent |
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| Vertical measurements |
| (16) | Interlabial gap (mm) | Distance between the upper and lower lips | Sts- Sti distance |
| (17) | Upper lip length (mm) | Vertical distance of the upper lip | Sn-Sts distance |
| (18) | Lower lip length (mm) | Vertical distance of the lower lip | Sti Me′ distance |
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