Orbital Index in Urhobos of Nigeria

Abstract

The orbit is the cavity or socket of the skull in which the eye and its appendages are situated. Normal values of orbital height, orbital width and orbital index are vital measurements in evaluation and diagnosis of craniofacial syndromes and post traumatic deformities, treatment of abnormalities to produce the best aesthetic and functional result is important. Thus the study was conducted to document normal orbital values in a Nigeria population. Two hundred and thirty six males and one hundred and fifty two female volunteer adult Urhobos were selected randomly among the student of Delta State University Abraka age ranged 18-30years. There orbital height and orbital width were measured and the orbital index calculated (OI/OW X 100). Result showed mean orbital height and width were higher in males (33.01mm and 42.24mm) than in females (31.92mm and 40.82mm). This was statistically significant (p< 0.05). The study showed sexual dimorphism and places the population in microseme (small) category. This study will be of importance in anthropology, forensic medicine and craniofacial surgery.