Relationship Between Foveal Threshold and Visual Acuity Using the Humphrey Visual Field Analyzer

Christina J. Flaxel; John R. Samples; Laurie Dustin

doi:10.1016/j.ajo.2006.11.059

Relationship Between Foveal Threshold and Visual Acuity Using the Humphrey Visual Field Analyzer

Christina J. Flaxel, John R. Samples, Laurie Dustin

Ophthalmology

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Purpose: Evaluate Humphrey visual field (VF) analyzer central 30-2 foveal threshold test for best-corrected visual acuity. Design: Consecutive case series. Methods: Both eyes (n = 117) of 59 patients with diseased and healthy eyes presenting for VF analysis were evaluated to determine foveal threshold. This was compared with uncorrected visual acuity converted to logMAR, determined by manifest refraction, or estimated from Snellen visual acuity with pinhole. Results: Foveal threshold correlated with logMAR uncorrected visual acuity for right (P < .0001) and left eyes (P < .0001) and logMAR best-corrected visual acuity for right (P < .0001) and left eyes (P < .0001). Sixty-eight percent of eyes with visual acuity <20/50 had foveal threshold of 0 to 30; 47% with visual acuity of >20/20 had foveal threshold better than 37. Conclusions: Foveal threshold measurement appears to provide a reliable estimate of best-corrected visual acuity. This method may usefully predict visual acuity in eyes with possible nonorganic visual acuity loss.

Original language	English (US)
Pages (from-to)	875-877
Number of pages	3
Journal	American journal of ophthalmology
Volume	143
Issue number	5
DOIs	https://doi.org/10.1016/j.ajo.2006.11.059
State	Published - May 2007

ASJC Scopus subject areas

Ophthalmology

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10.1016/j.ajo.2006.11.059

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title = "Relationship Between Foveal Threshold and Visual Acuity Using the Humphrey Visual Field Analyzer",

abstract = "Purpose: Evaluate Humphrey visual field (VF) analyzer central 30-2 foveal threshold test for best-corrected visual acuity. Design: Consecutive case series. Methods: Both eyes (n = 117) of 59 patients with diseased and healthy eyes presenting for VF analysis were evaluated to determine foveal threshold. This was compared with uncorrected visual acuity converted to logMAR, determined by manifest refraction, or estimated from Snellen visual acuity with pinhole. Results: Foveal threshold correlated with logMAR uncorrected visual acuity for right (P < .0001) and left eyes (P < .0001) and logMAR best-corrected visual acuity for right (P < .0001) and left eyes (P < .0001). Sixty-eight percent of eyes with visual acuity <20/50 had foveal threshold of 0 to 30; 47% with visual acuity of >20/20 had foveal threshold better than 37. Conclusions: Foveal threshold measurement appears to provide a reliable estimate of best-corrected visual acuity. This method may usefully predict visual acuity in eyes with possible nonorganic visual acuity loss.",

author = "Flaxel, {Christina J.} and Samples, {John R.} and Laurie Dustin",

note = "Funding Information: This study was supported in part by unrestricted grants from Research to Prevent Blindness, Inc, New York, New York. The authors indicate no financial conflict of interest. Involved in design and conduct of study (C.J.F., J.R.S.); data collection, management and interpretation of data (C.J.F., J.R.S.); data analysis and statistical analysis (L.D.); preparation of the manuscript (C.J.F.); and review and approval of the manuscript (C.J.F., J.R.S., L.D.).",

year = "2007",

month = may,

doi = "10.1016/j.ajo.2006.11.059",

language = "English (US)",

volume = "143",

pages = "875--877",

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T1 - Relationship Between Foveal Threshold and Visual Acuity Using the Humphrey Visual Field Analyzer

AU - Flaxel, Christina J.

AU - Samples, John R.

AU - Dustin, Laurie

N1 - Funding Information: This study was supported in part by unrestricted grants from Research to Prevent Blindness, Inc, New York, New York. The authors indicate no financial conflict of interest. Involved in design and conduct of study (C.J.F., J.R.S.); data collection, management and interpretation of data (C.J.F., J.R.S.); data analysis and statistical analysis (L.D.); preparation of the manuscript (C.J.F.); and review and approval of the manuscript (C.J.F., J.R.S., L.D.).

PY - 2007/5

Y1 - 2007/5

N2 - Purpose: Evaluate Humphrey visual field (VF) analyzer central 30-2 foveal threshold test for best-corrected visual acuity. Design: Consecutive case series. Methods: Both eyes (n = 117) of 59 patients with diseased and healthy eyes presenting for VF analysis were evaluated to determine foveal threshold. This was compared with uncorrected visual acuity converted to logMAR, determined by manifest refraction, or estimated from Snellen visual acuity with pinhole. Results: Foveal threshold correlated with logMAR uncorrected visual acuity for right (P < .0001) and left eyes (P < .0001) and logMAR best-corrected visual acuity for right (P < .0001) and left eyes (P < .0001). Sixty-eight percent of eyes with visual acuity <20/50 had foveal threshold of 0 to 30; 47% with visual acuity of >20/20 had foveal threshold better than 37. Conclusions: Foveal threshold measurement appears to provide a reliable estimate of best-corrected visual acuity. This method may usefully predict visual acuity in eyes with possible nonorganic visual acuity loss.

AB - Purpose: Evaluate Humphrey visual field (VF) analyzer central 30-2 foveal threshold test for best-corrected visual acuity. Design: Consecutive case series. Methods: Both eyes (n = 117) of 59 patients with diseased and healthy eyes presenting for VF analysis were evaluated to determine foveal threshold. This was compared with uncorrected visual acuity converted to logMAR, determined by manifest refraction, or estimated from Snellen visual acuity with pinhole. Results: Foveal threshold correlated with logMAR uncorrected visual acuity for right (P < .0001) and left eyes (P < .0001) and logMAR best-corrected visual acuity for right (P < .0001) and left eyes (P < .0001). Sixty-eight percent of eyes with visual acuity <20/50 had foveal threshold of 0 to 30; 47% with visual acuity of >20/20 had foveal threshold better than 37. Conclusions: Foveal threshold measurement appears to provide a reliable estimate of best-corrected visual acuity. This method may usefully predict visual acuity in eyes with possible nonorganic visual acuity loss.

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Relationship Between Foveal Threshold and Visual Acuity Using the Humphrey Visual Field Analyzer

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