Measurements of Orbital Volume using Cone-Beam Computed Tomography in Eye Movement Abnormalities. Issue 1 (January 2014)

• Record Type: Journal Article
• Authors: Maka, Erika; Lukats, Olga; Vizkelety, Tamas; Markella, Zsolt; Kis, Maria; Nemeth, Janos; Barabas, Jozsef
• Is Part Of: European journal of ophthalmology. Volume 24:Issue 1(2014)
• Page Start: 101
• Page End: 106
• Publication Date: 2014-01
• Subjects: Cone-beam CT -- Orbital development -- Strabismus; Ophthalmology -- Periodicals; Eye -- Diseases -- Periodicals; 617.7005
• DOI: 10.5301/ejo.5000303
• Languages: English
• ISSNs: 1120-6721

Abstract

Purpose: To measure the orbital volume in adult patients with unilateral eye movement abnormalities originating in childhood. Methods: Cone-beam computed tomography was performed in 2 patients with eye movement abnormalities. A 28-year-old woman was treated because of right divergent squint originating at 8 years of age after penetrating corneal trauma. A 38-year-old man was examined because of abnormal head posture caused by left superior oblique underaction originating at 6 years of age. Orbital scans were analyzed with Cranioviewer 3D craniofacial cephalometric program. We measured bony orbital area in 6 slices (in ventro-dorsal direction per 4.8 mm) in every orbit on coronal scans. Results: The volume was more in the orbit with unilateral divergent squint and less in the orbit with unilateral superior oblique underaction compared to the contralateral orbital volume measurements. Conclusions: Cranioviewer 3D craniofacial cephalometric program is suitable for volumetric analysis of the bony orbit on cone-beam computed tomography files. The development of the orbit can be influenced by extraocular muscle movements.