Comparison of Three Methods of Measuring the Inter-Pupillary Distance
Journal of Ophthalmic and Optometric Sciences,
Vol. 6 No. 3 (2022),
14 November 2023
,
Page 7-14
https://doi.org/10.22037/joos.v6i3.43349
Abstract
Purpose: The purpose of this study was to compare the results of three methods for measuring the interpupillary distance (IPD), including the pupillary distance (PD) ruler, PD meter, and auto-refractometer.
Patients and Methods: This cross-sectional study was conducted among patients admitted to Basir Eye Clinic, Tehran, Iran, between January 2018 and June 2019. Far-distance IPD was measured using the PD ruler, PD meter, and auto-refractometer by determining the midpoint between the pupils. Additionally, near-distance IPD and PD for each eye were measured separately using the PD ruler and PD meter.
Results: A total of 300 patients participated in the study, with 144 being male and 234 being female. The mean far-distance IPD was significantly higher among males (P < 0.001 for all three methods). There was a statistically significant correlation between far IPD and older age (P < 0.001 for all three methods). The mean far-distance IPD measurements using the auto-refractometer, PD meter, and PD ruler were 62.57 ± 3.79 mm, 61.95 ± 3.82 mm, and 61.24 ± 3.76 mm, respectively, indicating a statistically significant difference (P < 0.001). However, no clinically significant difference (1 mm difference for one-sided or 2 mm difference for two-sided measurements) was observed among any of the measurement methods.
Conclusion: Although there were statistically significant differences between the three methods in measuring far-distance IPD, these differences did not reach clinical significance. Therefore, it appears that these three methods can be used interchangeably in a clinical setting.
- Interpupillary Distance
- Auto-refractometer
- Sex
- Comparison
How to Cite
References
Yildirim Y, Sahbaz I, Kar T, Kagan G, Taner MT, Armagan I, et al. Evaluation of interpupillary distance in the Turkish population. Clin Ophthalmol. 2015;9:1413-6.
Eom Y, Song JS, Ahn SE, Kang SY, Suh YW, Oh J, et al. Effects of interpupillary distance on stereoacuity: the Frisby Davis distance stereotest versus a 3-dimensional distance stereotest. Jpn J Ophthalmol. 2013;57(5):486-92.
Evereklioglu C, Doganay S, Er H, Tercan M, Gunduz A, Balat A, et al. Interpupillary index: a new parameter for hypo-hypertelorism. J Craniomaxillofac Surg. 2001;29(4):191-4.
Gomes VL, Gonçalves LC, do Prado CJ, Junior IL, de Lima Lucas B. Correlation between facial measurements and the mesiodistal width of the maxillary anterior teeth. J Esthet Restor Dent. 2006;18(4):196-205.
Linkov G, Mally P, Czyz CN, Wulc AE. Quantification of the Aesthetically Desirable Female Midface Position. Aesthet Surg J. 2018;38(3):231-40.
Clevidence DE, Juckett MB, Lucarelli MJ. Marrow suppression with myelodysplastic features, hypoerythropoetinemia, and lipotrophic proptosis due to rosiglitazone. WMJ. 2009;108(9):462-5.
Osuobeni EP, Faden FK. Interpupillary distance of females of Arab origin. Optom Vis Sci. 1993;70(3):244-7.
McCormack G, McGill E. Measurement of interpupillary distance with chromostereopsis. Am J Optom Physiol Opt. 1982;59(1):60-6.
MacLachlan C, Howland HC. Normal values and standard deviations for pupil diameter and interpupillary distance in subjects aged 1 month to 19 years. Ophthalmic Physiol Opt. 2002;22(3):175-82.
Wang Y, Zhao Y, Ai Y. Survey on the growth of interpupillary distance of Chinese children aged 5 to 17 years. Zhonghua Yan Ke Za Zhi. 2001;37(1):63-5. (Article in Chinese)
Filipović T. Changes in the interpupillary distance (IPD) with ages and its effect on the near convergence/distance (NC/D) ratio. Coll Antropol. 2003;27(2):723-7.
Gupta VP, Sodhi PK, Pandey RM. Normal values for inner intercanthal, interpupillary, and outer intercanthal distances in the Indian population. Int J Clin Pract. 2003;57(1):25-9.
Etezad-Razavi M, Jalalifar S. Correlation between Interpupillary and Inner-Outer Intercanthal Distances in Individuals Younger than 20. J Ophthalmic Vis Res. 2008;3(1):16-22.
Fesharaki H, Rezaei L, Farrahi F, Banihashem T, Jahanbkhshi A. Normal interpupillary distance values in an Iranian population. J Ophthalmic Vis Res. 2012;7(3):231-4.
Pryor HB. Objective measurement of interpupillary distance. Pediatrics. 1969;44(6):973-7.
Murray NP, Hunfalvay M, Bolte T. The Reliability, Validity, and Normative Data of Interpupillary Distance and Pupil Diameter Using Eye-Tracking Technology. Transl Vis Sci Technol. 2017;6(4):2.
Holland BJ, Siderov J. Repeatability of measurements of interpupillary distance. Ophthalmic Physiol Opt. 1999;19(1):74-8.
Kumah D, Akuffo K, Abaka-Cann J, Ankamah E, Osae E. Inter-pupillary Distance Measurements among Students in the KumasiMetropolis. Optom Open Access. 2016;1(103):2.
Osuobeni EP, al-Fahdi M. Differences between anatomical and physiological interpupillary distance. J Am Optom Assoc. 1994;65(4):265-71.
Walsh G, Pearce EI. The difference between belief and reality for Viktorin's method of inter-pupillary distance measurement. Ophthalmic Physiol Opt. 2009;29(2):150-4.
Osuobeni EP, al-Musa KA. Gender differences in interpupillary distance among Arabs. Optom Vis Sci. 1993;70(12):1027-30.
Moravej R, Sahihalnasab SS. Evaluating the Pupillary Distance in an Iranian Population and its Relation with age, Sex and Refractive Errors. Journal of Ophthalmic and Optometric Sciences. 2017;1(5):17-22.
Osuobeni EP, al-Fahdi M. Differences between anatomical and physiological interpupillary distance. J Am Optom Assoc. 1994;65(4):265-71.
Holland BJ, Siderov J. Repeatability of measurements of interpupillary distance. Ophthalmic Physiol Opt. 1999;19(1):74-8.
Alanazi SA, Alanazi MA, Osuagwu UL. Influence of age on measured anatomical and physiological interpupillary distance (far and near), and near heterophoria, in Arab males. Clin Ophthalmol. 2013;7:711-24.
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