Anatomical Studies of the Orbital Cavity Using Three-Dimensional Computed Tomography.
OBJECTIVE
This study was designed to analyze the morphometric characteristics of the orbital cavity using three-dimensional computed tomography in Asians.


METHODS
Two hundred seventy-six orbits in 142 Asians (74 men and 68 women) were examined and compared according to age, sex, and laterality (right and left).


RESULTS
Mean orbital morphometric values were as follows. Orbital cavity depth was 49.60 mm from optic foramen to orbitale (inferior) and 41.32 mm from optic foramen to lacrimal crest (medial). Anterior and posterior orbital medial wall heights were 17.73 and 12.76 mm, respectively. Medial, middle, and lateral orbital floor lengths were 39.08, 29.56, and 20.08 mm, respectively. Anterior and posterior orbital floor width was 21.87 and 12.00 mm, respectively. For the orbital inferior-medial angle, anterior, middle, and posterior value was 132.11°, 126.24°, and 136.88°, respectively. Inferior orbital cavity depth, anterior orbital medial wall height, and orbital floor length tended to increase with aging, whereas orbital floor width tended to decrease with aging. No significant differences were found in terms of laterality, and values were greater in men than in women.


CONCLUSIONS
This quantitative analysis of orbital measurements will allow surgeons to plan operations more accurately and will help predict outcomes.
*School of Dentistry, Chonnam National University†Department of Oral and Maxillofacial Surgery, Chonnam National University Hospital‡Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea.
Hyo-Sun
HS
Kang
Jeong Joon
JJ
Han
Hee-Kyun
HK
Oh
Min-Suk
MS
Kook
Seunggon
S
Jung
Hong-Ju
HJ
Park
D000328:Adult; D000367:Age Factors; D000368:Aged; D044466:Asian People; D002508:Cephalometry; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D009915:Orbit / Q000000981:diagnostic imaging*; D009917:Orbital Fractures / Q000000981:diagnostic imaging / Q000601:surgery; D012016:Reference Values; D012737:Sex Factors; D012886:Skull; D014057:Tomography, X-Ray Computed; D055815:Young Adult