A study of the near and far interpupillary distances among the Bura ethnic group of North-Eastern Nigeria

Usman, Yohanna Musa; Shugaba, Ali I

doi:10.4103/2315-7992.190465

Cited by 3 publications

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“…Compared to the Bura ethnic group of North-Eastern Nigeria whose mean distance and near IPDs, measured manually, are 73.1 ± 2.8 and 67.1 ± 2.7, respectively, the IPDs of Israeli population are much narrower. 61 Israeli IPDs also are narrower than reported distance IPD values for African Americans (64.1 mm 12 and 66.3 mm 62 ), Chinese males and females (64.6 mm and 61.3 mm, respectively 63 ), Turks (62.5 ± 4.1 mm 64 ) and European Caucasians (62.9 ± 3.4 55 ). The IPD of the Israeli population appears to be similar to the Arab population (60.9 ± 3.0 in females and 62.0 ± 2.6 in males 4 ), which could be due to the fact that our cohort included 53 Israeli Arabs and that the two ethnic groups are genetically similar.…”

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confidence: 59%

Agreement and inter-session repeatability of manual and automatic interpupillary distance measurements

Gantz

Shneor

Doron

2021

Journal of Optometry

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Background Interpupillary distance (IPD) is important in developmental anatomy, genetics, design of optical instrumentation, ocular diagnostics, and optical prescribing. IPD frequently is measured on different days, and by either automatic pupillometers (physiological measurement) or manual ruler (anatomical measurement). Therefore, there is importance in the agreement and inter-session repeatability of manual and automatic IPD measurements. Methods Monocular distance from the bridge of the nose and binocular distance and near binocular IPD were randomly measured, using a millimeter ruler and the Essilor Pupillon pupillometer. Gender effects were assessed using Wilcoxon and Mann-Whitney tests, respectively. Agreement was assessed using Spearman correlation and Bland-Altman (B&A) plots. Thirty additional participants were tested within 1–2 weeks to determine the inter-session repeatability. Results The agreement study included 199 participants (mean age: 24.1 ± 5.0 range: 19−53, 58 male, 141 female) and the repeatability sub- study included 30 (mean age: 27.9 ± 4.5, range: 23–39, 6 male, 24 female). Males and females significantly differed in age (<2 year mean difference (md)) and IPD (monocular md: < 1 mm, binocular md: < 2 mm). Manual vs. automatic measurements were significantly different for all conditions (md: <1 mm for all) except for distance left eye male PD. There was no significant difference between the session for both methods. Conclusions Binocular and monocular manual and automatic measurements were significantly different statistically, but not clinically. Distance binocular IPD was approximately 3 mm wider than near IPD. Male binocular IPD was approximately 2 mm wider than the female IPD. Both methods had good inter-session repeatability.

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