Fig. 1.

Areas of periorbital region: periocular region: (g.-sci.-ft.-fs.-or.-mf.-se.-mf.-or.-fs.-ft.-sci.-g.), frontal region (tr.-ft.-sci.-gl.-sci.-ft. tr.), temporal region: lateral to frontal and ocular regions, malar region (fs.-or.-mf.-al.-zy.-t.). Facial landmarks : trichion (tr), frontotemporale (ft), glabella (g), fronto-supraorbitale (fs), zygion (zy), tragus (t). Orbital landmarks : endocanthion (en), exocanthion (ex), palpebrale superius (ps), palpebrale inferius (pi), supraciliary (sci), orbitale inferius (or). Nasal landmarks : nasion (n), sellion (se), maxillofrontale (mf), alare (al).