Threshold equivalence between perimeters

Douglas Anderson, William J Feuer, Wallace L M Alward, Gregory L. Skuta

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

To determine equivalence between perimeters, 49 eyes of 35 subjects underwent static threshold testing of the central 30 degrees twice on each of three automated perimeters and twice by manual kinetic threshold testing with the Goldmann perimeter. The Octopus-Humphrey difference was 3.3 dB (2.3 dB in the upper two rows for programs 32 and 30-2). The Dicon-Octopus difference was 3.5 dB and the Dicon-Humphrey, 6.5 dB. The I4e Stimulus of the Goldmann perimeter was equivalent to 17.1 dB, 13.6 dB, and 10.8 dB on the Humphrey, Octopus, and Dicon perimeters, respectively. The III4e Stimulus of the Goldmann perimeter, used for visual impairment determination, was roughly equivalent to 7 to 10 dB, 4 to 7 dB, and 0 to 6 dB on the Humphrey, Octopus, and Dicon perimeters, respectively. The prediction when converting from one instrument to another was only 10% less reliable than the ability of a perimeter to predict the values on a second examination with the same perimeter. Validity of the conversion formulas was confirmed by the age-corrected normal values available for the Octopus, Humphrey, and Goldmann perimeters.

Original languageEnglish
Pages (from-to)493-505
Number of pages13
JournalAmerican Journal of Ophthalmology
Volume107
Issue number5
DOIs
StatePublished - May 15 1989

Fingerprint

Octopodiformes
Vision Disorders
Reference Values

ASJC Scopus subject areas

  • Ophthalmology

Cite this

Anderson, D., Feuer, W. J., Alward, W. L. M., & Skuta, G. L. (1989). Threshold equivalence between perimeters. American Journal of Ophthalmology, 107(5), 493-505. https://doi.org/10.1016/0002-9394(89)90493-5

Threshold equivalence between perimeters. / Anderson, Douglas; Feuer, William J; Alward, Wallace L M; Skuta, Gregory L.

In: American Journal of Ophthalmology, Vol. 107, No. 5, 15.05.1989, p. 493-505.

Research output: Contribution to journalArticle

Anderson, D, Feuer, WJ, Alward, WLM & Skuta, GL 1989, 'Threshold equivalence between perimeters', American Journal of Ophthalmology, vol. 107, no. 5, pp. 493-505. https://doi.org/10.1016/0002-9394(89)90493-5
Anderson, Douglas ; Feuer, William J ; Alward, Wallace L M ; Skuta, Gregory L. / Threshold equivalence between perimeters. In: American Journal of Ophthalmology. 1989 ; Vol. 107, No. 5. pp. 493-505.
@article{d785bfa416d546e19681fdae17db25c4,
title = "Threshold equivalence between perimeters",
abstract = "To determine equivalence between perimeters, 49 eyes of 35 subjects underwent static threshold testing of the central 30 degrees twice on each of three automated perimeters and twice by manual kinetic threshold testing with the Goldmann perimeter. The Octopus-Humphrey difference was 3.3 dB (2.3 dB in the upper two rows for programs 32 and 30-2). The Dicon-Octopus difference was 3.5 dB and the Dicon-Humphrey, 6.5 dB. The I4e Stimulus of the Goldmann perimeter was equivalent to 17.1 dB, 13.6 dB, and 10.8 dB on the Humphrey, Octopus, and Dicon perimeters, respectively. The III4e Stimulus of the Goldmann perimeter, used for visual impairment determination, was roughly equivalent to 7 to 10 dB, 4 to 7 dB, and 0 to 6 dB on the Humphrey, Octopus, and Dicon perimeters, respectively. The prediction when converting from one instrument to another was only 10{\%} less reliable than the ability of a perimeter to predict the values on a second examination with the same perimeter. Validity of the conversion formulas was confirmed by the age-corrected normal values available for the Octopus, Humphrey, and Goldmann perimeters.",
author = "Douglas Anderson and Feuer, {William J} and Alward, {Wallace L M} and Skuta, {Gregory L.}",
year = "1989",
month = "5",
day = "15",
doi = "10.1016/0002-9394(89)90493-5",
language = "English",
volume = "107",
pages = "493--505",
journal = "American Journal of Ophthalmology",
issn = "0002-9394",
publisher = "Elsevier USA",
number = "5",

}

TY - JOUR

T1 - Threshold equivalence between perimeters

AU - Anderson, Douglas

AU - Feuer, William J

AU - Alward, Wallace L M

AU - Skuta, Gregory L.

PY - 1989/5/15

Y1 - 1989/5/15

N2 - To determine equivalence between perimeters, 49 eyes of 35 subjects underwent static threshold testing of the central 30 degrees twice on each of three automated perimeters and twice by manual kinetic threshold testing with the Goldmann perimeter. The Octopus-Humphrey difference was 3.3 dB (2.3 dB in the upper two rows for programs 32 and 30-2). The Dicon-Octopus difference was 3.5 dB and the Dicon-Humphrey, 6.5 dB. The I4e Stimulus of the Goldmann perimeter was equivalent to 17.1 dB, 13.6 dB, and 10.8 dB on the Humphrey, Octopus, and Dicon perimeters, respectively. The III4e Stimulus of the Goldmann perimeter, used for visual impairment determination, was roughly equivalent to 7 to 10 dB, 4 to 7 dB, and 0 to 6 dB on the Humphrey, Octopus, and Dicon perimeters, respectively. The prediction when converting from one instrument to another was only 10% less reliable than the ability of a perimeter to predict the values on a second examination with the same perimeter. Validity of the conversion formulas was confirmed by the age-corrected normal values available for the Octopus, Humphrey, and Goldmann perimeters.

AB - To determine equivalence between perimeters, 49 eyes of 35 subjects underwent static threshold testing of the central 30 degrees twice on each of three automated perimeters and twice by manual kinetic threshold testing with the Goldmann perimeter. The Octopus-Humphrey difference was 3.3 dB (2.3 dB in the upper two rows for programs 32 and 30-2). The Dicon-Octopus difference was 3.5 dB and the Dicon-Humphrey, 6.5 dB. The I4e Stimulus of the Goldmann perimeter was equivalent to 17.1 dB, 13.6 dB, and 10.8 dB on the Humphrey, Octopus, and Dicon perimeters, respectively. The III4e Stimulus of the Goldmann perimeter, used for visual impairment determination, was roughly equivalent to 7 to 10 dB, 4 to 7 dB, and 0 to 6 dB on the Humphrey, Octopus, and Dicon perimeters, respectively. The prediction when converting from one instrument to another was only 10% less reliable than the ability of a perimeter to predict the values on a second examination with the same perimeter. Validity of the conversion formulas was confirmed by the age-corrected normal values available for the Octopus, Humphrey, and Goldmann perimeters.

UR - http://www.scopus.com/inward/record.url?scp=0024383194&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024383194&partnerID=8YFLogxK

U2 - 10.1016/0002-9394(89)90493-5

DO - 10.1016/0002-9394(89)90493-5

M3 - Article

C2 - 2712132

AN - SCOPUS:0024383194

VL - 107

SP - 493

EP - 505

JO - American Journal of Ophthalmology

JF - American Journal of Ophthalmology

SN - 0002-9394

IS - 5

ER -