Purpose: To detect the accuracy and feasibility of computed tomography in orbital volume and fracture assessment, using it as an evaluating tool, its clinical implication and whether it is affected by specific approach either subciliary or transconjuctival approach. Methods: This study included 28 orbits presenting to Kasar Al-Ainy hospital from July 2014 to July 2016 by unilateral orbital floor fracture, who were all assessed by doing pre-and post-operative orbital volumetery which was assessed for being an aiding tool for operative decision and diagnosing the different causes of enophthalmos. Conclusion: Consistent volume measurements can be obtained using different 3-D image analysis programs. Measuring pre, postoperative volume changes and postoperative reductions in volume can ensure a good surgical result and thereby decrease the incidence of enophthalmos in addition identifying the cause of enophthalmus whether due to bony or soft tissue element. Key Words: Computed tomography, orbital volume try, measurement, orbital volume., enophthalmos, orbital fracture.