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CT based three-dimensional measurement of orbit and eye anthropometry.

Authors :
Weaver AA
Loftis KL
Tan JC
Duma SM
Stitzel JD
Source :
Investigative ophthalmology & visual science [Invest Ophthalmol Vis Sci] 2010 Oct; Vol. 51 (10), pp. 4892-7. Date of Electronic Publication: 2010 May 12.
Publication Year :
2010

Abstract

Purpose: To measure eye and orbit anthropometric variation within the normal population by using CT images and to determine the effects of age and sex on eye and orbit anthropometry. Quantification of eye and orbit anthropometric variation within the normal population and between persons of different age and sex is important in the prediction and prevention of eye injury.<br />Methods: A systematic method was developed to align head CT images three dimensionally and to measure ocular and orbital parameters in 39 subjects. Twenty-four measurements were collected along the orbital rim, to quantify the orbital aperture. Protrusions of the brow and the eye were measured, along with relative distances, to describe location of the eye within the orbit.<br />Results: The orbit widened with age, and significant relations were identified between orbital aperture and eye location measurements, both of which varied significantly between the sexes.<br />Conclusions: The comprehensive set of measurements collected in this study provides three-dimensional information on orbit geometry, as well as placement of the eye within the orbit. These measurements and the methodology used will contribute to the development of finite element models of the orbit and eye for computational modeling purposes and may be useful in the design of eye protection equipment.

Details

Language :
English
ISSN :
1552-5783
Volume :
51
Issue :
10
Database :
MEDLINE
Journal :
Investigative ophthalmology & visual science
Publication Type :
Academic Journal
Accession number :
20463322
Full Text :
https://doi.org/10.1167/iovs.10-5503