Comparison of subjective heterophoria testing with a phoropter and trial frame

Optometry and Vision Science : Official Publication of the American Academy of Optometry
Elizabeth Casillas Casillas, Mark Rosenfield

Abstract

Subjective measurement of the oculomotor deviation at both distance and near is a standard test in optometric practice. A number of procedures are available to the practitioner, and previous studies have demonstrated differences in the repeatability of many of the techniques. However, it is unclear whether testing the subject through a phoropter or in free space (trial frame) will alter the oculomotor deviation. Distance and near heterophoria was measured in 60 visually normal subjects between 20 and 34 years of age using the Von Graefe (VG), Maddox Rod (MR), and Modified Thorington (MT) procedures. The deviation was assessed for viewing distances of 6 m and 0.40 m using both a phoropter and trial frame. To examine the repeatability of each technique, the deviation was measured on two separate occasions for each procedure, with the two sessions being separated by at least 24 hours. The mean vertical deviations at both distance and near were extremely close to orthophoria, and only minimal variation was observed. However, the MR procedure, when used with a trial frame, gave the best repeatability for measuring vertical deviations both at distance and near. Regarding horizontal deviations, the repeatability was better for all thr...Continue Reading

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Citations

Nov 29, 2007·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Rènée du ToitGarry Brian
Aug 18, 2009·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Sang J HanTara L Alvarez
Mar 29, 2007·Investigative Ophthalmology & Visual Science·Shrikant R BharadwajClifton M Schor
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Sep 24, 2015·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Pascaline NeveuCorinne Roumes
Jul 15, 2015·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Erin M RueffMelissa D Bailey
May 15, 2012·Vision Research·Dmitri V PoltavskiThomas V Petros
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Oct 4, 2008·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Jorge JorgeManuel A Parafita
Apr 18, 2019·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Xu ChengNoel A Brennan
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Apr 25, 2009·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Vidhyapriya SreenivasanWilliam R Bobier
Jun 6, 2014·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Jose Luis CebrianIsabel Sanchez
Aug 25, 2020·Translational Vision Science & Technology·Liat Gantz, Avi Caspi
Nov 20, 2020·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Erin M RueffMelissa D Bailey
Apr 13, 2019·Journal of Oral Biology and Craniofacial Research·Mettey AlexandreQuercia Patrick
Aug 9, 2020·Journal of Optometry·Alessio Facchin, Silvio Maffioletti

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