1. His ethmoid bone was broken in the accident.

2. Objective To investigate the histopathologic study of the ethmoid bone in chronic sinusitis (CRS) and the role of bone pathology in the pathogenesis of CRS.

3. And most importantly, it leaves the space for globe malposition by adequate osteotomy and compression fracture to the plate of ethmoid bone without injuring the optic nerves and lacrimal sac.

4. Objective To explore the effect of mending the perforation of nasal septum by shifting the mucoperiosteal flap and perpendicular plate of the ethmoid bone under nasal endoscope.

5. Conclusion Mending the perforation of nasal septum by shifting the mucoperiosteal flap and perpendicular plate of the ethmoid bone under nasal endoscope is an effective method.