Ethnic variation in medial orbital wall anatomy and its implications for decompression surgery
To describe the inter-ethnic variation in medial orbital wall anatomy between Chinese, Malay, Indian and Caucasian subjects Observational research using computed tomography (CT) in a single centre. Gender and laterality were matched in 20 individuals of each race. We excluded subjects younger than 16 years and those with orbital pathology. OsiriX version 8.5.1 (Pixmeo., Switzerland) and DICOM image viewing software CARESTREAM Vue PACS (Carestream Health Inc., USA) were used to measure the ethmoidal sinus length, width, and volume, as well as the angle between the medial orbital wall and the floor, and the location of the posterior ethmoid sinus in relation to the posterior maxillary wall. The Statistical Package for Social Sciences, version 25.0, was used to conduct the statistical analyses (IBM, USA). Results Each group had 12 men (60 percent), with no significant age difference (p = 0.334–0.994). The mean ethmoid sinus length in Chinese, Malay, Indian, and Caucasian participants,...