Characterization of the orbital volume in normal population

Area of Science:

• Ophthalmology
• Radiology
• Anthropometry

Background:

• Understanding normal orbital volume (OV) is crucial for diagnosing and managing various ophthalmic and craniofacial conditions.
• Previous studies have not comprehensively detailed the normative data for OV and its correlation with key facial anthropometric variables.

Purpose of the Study:

• To establish normative values for orbital volume using CT scans.
• To investigate the correlation between orbital volume and facial anthropometric measurements.
• To develop a predictive model for orbital volume based on clinical variables.

Main Methods:

• A correlational study design was employed, including consecutive normal CT scans.
• Orbital volume and facial anthropometrics were meticulously measured by two independent, blinded observers.
• Univariate and multivariate statistical analyses were conducted to identify significant predictors of orbital volume.

Main Results:

• A total of 199 patients (398 orbits) were analyzed, with a mean orbital volume of 24.5 ± 3.08 cc.
• High intra- and interobserver reliability was confirmed for all measurements.
• Significant predictors of orbital volume included age, total facial height, facial width, and interorbital distance.

Conclusions:

• Normal orbital volume and its associations with facial anthropometrics have been characterized.
• The established predictive model provides a valuable tool for estimating orbital volume.
• Further research into abnormal orbital volume is recommended to fully elucidate clinical implications.