A Study In Normative Data Of Interpupillary Distance Between Aryans & Mongolians Race In Dang Valley

Abstract

Aim: To evaluate the normative Interpupillary distances of Aryan and Mongoloid race in Dang valley.

Methods:  Cross sectional study was performed to evaluate far interpupillary distance (FIPD) and near interpupillary distance (NIPD) on 812 subjects wherein 406 were from the Aryans and 406 subjects were from the Mongolians race. The subjects included equal number of males and females in each group. The mean age was 44.54±20.453 years with minimum age of 10 and maximum age of 80. The FIPD and NIPD was measured by using pupillometer (Topcon PD-5). Statistical analysis was performed, SPSS (ver.20) and Microsoft Excel.

Results: Mean FIPD for all the Aryans subjects was 61.37±3.637mm (48.00 -71.50 mm). Mean FIPD for Mongoloids was found to be 62.31±3.203mm (48.00 -72.00mm).  NIPD was 58.28±3.489 mm (46.00-68.50) mm for Aryan and 59.20±3.07mm (46.00-68.00mm) for Mongoloids.  The mean FIPD of mongoloids males and Aryan males were 62.71 mm±3.335 and 62.25mm±3.640 respectively. Mean FIPD of Mongoloid females was 61.91mm±3.019 in Aryans females it was 60.48mm±3. 421. The mean NIPD of Mongolians males and Aryan males was 59.48±3.189mm & 59.04±3.527mm respectively. Mean NIPD of mongoloid and aryan female was 58.91±2.927mm & 57.51±3.283mm. Males had greater mean IPD than the females in both ethnic groups which were statistically significant. 

Conclusions: The normative (mean) FIPD for Mongolians and Aryans was 62.31±3.203mm&61.37±3.637mm.IPD was higher in Mongoloids race population than the Aryans of dang valley. Males had greater IPD than in female in both ethnic groups. Intra-ethnic gender difference was higher in Aryans (Male> female)