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Purpose: To demonstrate the anthropometric variations in head circumference,inner and outer canthal distances and interpupillary distance in Pakistanipopulation.Study Design: Cross sectional study.Place and Duration of study: The data was collected for a period of threemonths from August 2015 to October 2015 at the OPD of the Dow University ofHealth Science, Dow International Medical College, Karachi, Pakistan.Material and Methods: A total of 500 patients were recruited from an OutpatientOphthalmology department of Dow University of Health Science, DowInternational Medical University. ICD(inter canthal distance) was measuredbetween the medial angles of the palpebral fissures and the OCD(outer canthaldistance) from the lateral canthus of each eye using a metal rule .The headcircumference was measured using an inch tape and the IPD(inter pupillarydistance) was measured using an autorefractrometer. Each of the measurementswere done twice to the nearest 0.5 mm by two different researchers and anaverage was taken of these two measurements.Results: Total 500 subjects were used. Males were 227 (45.4%) and female werelittle more 273 (54.6%). The mean values for the parameters measured are asfollowing: Head Circumference (Mean: 55.0cm ± 1.8cm), Inner canthal distance(Mean: 3.4cm ± 0.4cm), Outer canthal distance (Mean: 10.7cm ± 3.9cm), Interpupillary distance (Mean: 61.4mm ± 4.3mm). Overall there is no mean differencefound by gender or age group separately except difference in age groups for Interpupillary distance.Conclusion: This study shows that anthropometric variations for headcircumference, inner canthal distance, outer canthal distance and theinterpupillary distance are seen with age and gender. Standard baseline valuesshould be defined for these parameters and these should be considered whenclassifying a patient with hypertelorism, hypotelorism or telecanthus or whenplanning an orbital surgery.Keywords: Anthropometry, inner canthal distance (ICD), outer canthal distance(OCD), interpupillary distance (IPD) and head circumference (HC).
Saba Alkhairy, Farnaz Siddiqui, Mazhar-ul-Hassan. (2016) Orbitofacial Anthropometry in a Pakistani Population, Pakistan Journal of Ophthalmology, Volume 32, Issue 1.
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