Comparison of OCF diagnosed during surgery with HRCT findings prior to surgery
| Orbital HRCT | Endoscopic view | Missing rate (%) | |
|---|---|---|---|
| Displaced OCF with impingement | 264 | 264 | 0 |
| Displaced OCF without impingement | 374 | 425 | 51 (12%) |
| OCF without displacement | 70 | 206 | 136 (66%) |
| No OCF | 567 | 380 |
Missing rate=(Number of patients missed out by HRCT scans)/(Number of patients confirmed during surgery).
HRCT, high-resolution computed topography; OCF, optic canal fracture.