The difference between belief and reality for Viktorin's method of inter-pupillary distance measurement

Authors: Walsh, G.; Pearce, E. I.

Source: Ophthalmic and Physiological Optics, Volume 29, Number 2, March 2009 , pp. 150-154(5)

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Abstract:

The variation in the measurement of an inter-pupillary distance and monocular centration distance by 54 registered practitioners using a `pd rule' was investigated. Their estimate of the repeatability of the measurement was also recorded, as was any correction for their own inter-pupillary distance. There was found to be considerable variation between practitioners in all measurements, and the practitioners' estimated repeatability of the measurement was rather better than the reality.

Keywords: inter-pupillary distance; monocular centration distance; practitioner belief; Viktorin's method

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1475-1313.2008.00619.x

Publication date: 2009-03-01