Morphometric analysis of skull is of great significance to anatomists, radiologists and medicolegal experts. Skull resists decomposition and is the preferred bone for identification of sex of an individual. Among several parameters, orbital measurements also show sexual dimorphism. Assessment of orbital dimensions is also important for surgical management of pathologies around orbit. Previous studies present large variations in orbital morphometry due to genetic and environmental factors, racial and ethnic differences, different measurement methods and sample size. Thus to obtain population specific standards, to assess the bilateral asymmetry and gender differences in orbital parameters, the present study was conducted. Materials and Methods: The study was performed on 98 adult Indian skulls (196 orbits) consisting of 60 male and 38 female skulls ofknown age and sex. Parameters measured were Orbital height (OH), Orbital breadth (OB) and Orbital Index (OI) which were expressed in descriptive statistics i.e. mean, range and standard deviation. Results: In the present study, in males, the mean OH for the right and left sides were 32.64±2.07 and 32.39±2.18mm respectively while their OB were 37.52±1.35 and 37.08±1.96mm respectively and the mean OI was 87.47. In Females, the mean OH for the right and left sides were 32.55±1.91 and 32.31±1.55mm respectively while their OB were 37.25±1.64 and 36.67±1.56mm respectively and the mean OI was 87.88. Conclusion: The mean OI in the present study was 87.47 placing the Indian population in Mesoseme group. Difference in orbital breadth on two sides was statistically significant emphasizing bilateral asymmetry. However the gender differences in OH, OB and OI were statistically insignificant.
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