How repeatable are measures of heterophoria?

Implications for clinical practice

Joanna M. Black, Bianca Davidson, Bridget Field, Joyce Mathan, Nicola ANSTICE

Research output: Contribution to journalMeeting Abstract

Abstract

Purpose: Heterophoria measurement is a common clinical technique used in the diagnosis of binocular vision anomalies, the most common of which is convergence insufficiency (CI). The purpose of this study was to assess the intra- and inter-examiner variability of four clinical tests of heterophoria measurements. Methods: Distance and near heterophorias of 20 visually-normal adults were measured using four different techniques (alternating prism cover test, von Graefe, Howell Card and Maddox Rod) on different days, by two separate examiners using standardized instructions and clinical techniques. Results: The Howell Card had the best inter-examiner agreement at both distance (95% limits of agreement = ±1.57 prism diopters (PD)) and near (95% LOA = ±1.91 PD). Intra-examiner agreement was also best for the distance Howell Card (95% LOA = ±1.63 PD) and near (95% LOA = ±2.41 PD). Conclusions: Howell Card is the most repeatable test both between examiners and over time.
Original languageEnglish
Pages (from-to)1-1
Number of pages1
JournalInvestigative ophthalmology & visual science
Volume59
Issue number9
Publication statusPublished - 2018
Externally publishedYes

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Ocular Motility Disorders
Binocular Vision

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Black, Joanna M. ; Davidson, Bianca ; Field, Bridget ; Mathan, Joyce ; ANSTICE, Nicola. / How repeatable are measures of heterophoria? Implications for clinical practice. In: Investigative ophthalmology & visual science. 2018 ; Vol. 59, No. 9. pp. 1-1.
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abstract = "Purpose: Heterophoria measurement is a common clinical technique used in the diagnosis of binocular vision anomalies, the most common of which is convergence insufficiency (CI). The purpose of this study was to assess the intra- and inter-examiner variability of four clinical tests of heterophoria measurements. Methods: Distance and near heterophorias of 20 visually-normal adults were measured using four different techniques (alternating prism cover test, von Graefe, Howell Card and Maddox Rod) on different days, by two separate examiners using standardized instructions and clinical techniques. Results: The Howell Card had the best inter-examiner agreement at both distance (95{\%} limits of agreement = ±1.57 prism diopters (PD)) and near (95{\%} LOA = ±1.91 PD). Intra-examiner agreement was also best for the distance Howell Card (95{\%} LOA = ±1.63 PD) and near (95{\%} LOA = ±2.41 PD). Conclusions: Howell Card is the most repeatable test both between examiners and over time.",
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How repeatable are measures of heterophoria? Implications for clinical practice. / Black, Joanna M.; Davidson, Bianca; Field, Bridget; Mathan, Joyce; ANSTICE, Nicola.

In: Investigative ophthalmology & visual science, Vol. 59, No. 9, 2018, p. 1-1.

Research output: Contribution to journalMeeting Abstract

TY - JOUR

T1 - How repeatable are measures of heterophoria?

T2 - Implications for clinical practice

AU - Black, Joanna M.

AU - Davidson, Bianca

AU - Field, Bridget

AU - Mathan, Joyce

AU - ANSTICE, Nicola

PY - 2018

Y1 - 2018

N2 - Purpose: Heterophoria measurement is a common clinical technique used in the diagnosis of binocular vision anomalies, the most common of which is convergence insufficiency (CI). The purpose of this study was to assess the intra- and inter-examiner variability of four clinical tests of heterophoria measurements. Methods: Distance and near heterophorias of 20 visually-normal adults were measured using four different techniques (alternating prism cover test, von Graefe, Howell Card and Maddox Rod) on different days, by two separate examiners using standardized instructions and clinical techniques. Results: The Howell Card had the best inter-examiner agreement at both distance (95% limits of agreement = ±1.57 prism diopters (PD)) and near (95% LOA = ±1.91 PD). Intra-examiner agreement was also best for the distance Howell Card (95% LOA = ±1.63 PD) and near (95% LOA = ±2.41 PD). Conclusions: Howell Card is the most repeatable test both between examiners and over time.

AB - Purpose: Heterophoria measurement is a common clinical technique used in the diagnosis of binocular vision anomalies, the most common of which is convergence insufficiency (CI). The purpose of this study was to assess the intra- and inter-examiner variability of four clinical tests of heterophoria measurements. Methods: Distance and near heterophorias of 20 visually-normal adults were measured using four different techniques (alternating prism cover test, von Graefe, Howell Card and Maddox Rod) on different days, by two separate examiners using standardized instructions and clinical techniques. Results: The Howell Card had the best inter-examiner agreement at both distance (95% limits of agreement = ±1.57 prism diopters (PD)) and near (95% LOA = ±1.91 PD). Intra-examiner agreement was also best for the distance Howell Card (95% LOA = ±1.63 PD) and near (95% LOA = ±2.41 PD). Conclusions: Howell Card is the most repeatable test both between examiners and over time.

M3 - Meeting Abstract

VL - 59

SP - 1

EP - 1

JO - Investigative Ophthalmology

JF - Investigative Ophthalmology

SN - 0146-0404

IS - 9

ER -