Related Experiment Video
Updated: Aug 14, 2026

Three-Dimensional Reconstruction of Orbital Fractures
Published on: May 16, 2025
Intraocular pressure changes secondary to reduction of orbito-zygomatic complex fractures
Greg J Paton1, Peter J Aquilina, Anthony Lynham
1Oral and Maxillofacial Department, Royal Brisbane Hospital, Brisbane, Australia. gjpaton@ozemail.com.au
Purpose:
To investigate intraocular pressure (IOP) changes in the involved eye during orbito-zygomatic complex fracture reduction, compared with the IOP of the eye on the uninjured side.
Patients And Methods:
Twenty patients who presented with displaced, isolated unilateral orbito-zygomatic complex fractures were enrolled. IOPs were measured using a Tono-Pen XL (Medtronic Solan, Jacksonville, FL) in the involved eye and in the non-involved eye. Pressure was recorded at 5 time points (before general anesthetic induction, after induction, immediately after fracture reduction, post operation while still under general anesthetic, and 15 minutes post general anesthetic).
Results:
There were no significant differences between the injured and control data at any time point. Average IOPs for the involved and control eye decreased after anesthetic induction; however, IOP increased in both eyes after fracture reduction.
Conclusion:
There is no statistical evidence of a difference between the IOP of the control and injured eyes. Routine IOP testing is not indicated during orbito-zygomatic fracture reduction.
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