PURPOSE To determine the exact anatomic location and volume of the thickest section of the greater wing of the sphenoid bone (trigone), which is removed during deep lateral orbital wall decompression. METHODS Eighteen dried skulls were used to determine the exact anatomic location and computed tomography (CT) images of 20 patients (10 male, 10 female) were used for volumetric calculations. ...

Thyroid-associated ophthalmopathy is a disease caused by autoimmune processes that also affects the thyroid gland and the lower limbs; at orbital level, it involves the muscle and adipose tissue. When medical treatment fails to achieve appreciable results, surgery aims to decompress the orbital cavity. In recent years, the treatment has been considerably improved by the introduction of transpal...

Background: Intraosseous meningiomas often display clinical and radiologic features that can be confused for fibrous dysplasia. Histopathology usually confirms the diagnosis. We present a case initially misdiagnosed as fibrous dysplasia by histopathology. Methods: A 58-year-old male presented with worsening proptosis and vision loss. He was previously diagnosed with fibrous dysplasia at an outs...

The purpose of this retrospective study was to investigate treatment options for orbital floor fractures at a Level 1 Trauma Center in Southern California. A review of 45 cases of isolated orbital floor fractures treated at the University of California at Irvine between February 2004 and April 2007 was done. Patients were retrospectively analyzed for gender, age, mechanism of injury, associated...

OBJECTIVE To report the physiological monitoring of intraocular pressure (IOP) during the postoperative periods after orbital decompression surgery and ascertain the correlation between the clinical factors and IOP changes. METHODS The medical records of 113 orbits from 60 patients who underwent orbital decompression surgery were reviewed retrospectively. IOP measurement during the postoperat...

In this study, two hydrazine derivatives, azobenzene and hydrazobenzene, were compressed in a diamond anvil cell at room temperature up to 28 GPa followed by decompression. In situ Raman spectroscopy was employed to monitor the pressure-induced structural evolutions. Azobenzene was found to undergo a phase transition at ~10 GPa. Further compression to 18 GPa resulted in an irreversible breakdow...