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The difference between belief and reality for Viktorin’s method of inter‐pupillary distance measurement
Author(s) -
Walsh G.,
Pearce E. I.
Publication year - 2009
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.2008.00619.x
Subject(s) - repeatability , monocular , optometry , variation (astronomy) , pupil , optics , computer science , psychology , mathematics , statistics , artificial intelligence , medicine , physics , astrophysics
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.