Influence of Test Strategy on Octopus Perimeter Cluster Mean Defect Values: Adaptive Bracketing Normal Strategy Versus Tendency-oriented Perimetry

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Abstract

BACKGROUND/PURPOSE:: Using adaptive bracketing “normal” (N) strategy it has been shown that cluster trend analysis is useful for early detection of glaucomatous progression with Octopus perimetry. However, in clinical practice “tendency-oriented perimetry” (TOP) is mostly used. In TOP, responses given at neighboring points modify the threshold values, and this process does not respect cluster borders. In the current investigation, we evaluated the influence of test strategy on the cluster mean defect (cluster MD) values. MATERIALS AND METHODS:: Sixty-nine eyes with normal visual field and 63 glaucoma eyes with predominantly mild to moderate glaucomatous visual field defect underwent Octopus perimetry with N and TOP strategy on the same day. Cluster MD values and global parameters were compared between test strategies in each group. RESULTS:: In the normal group, all global parameters (P≤0.0003) and cluster MD for 6 uncorrected and 5 corrected clusters differed significantly between the strategies (P≤0.0052). In the glaucoma group, no significant difference was seen for global mean sensitivity and global MD, but square loss variance reflecting inhomogeneity was 1.0 dB lower with TOP (P

Original languageEnglish
JournalJournal of Glaucoma
DOIs
Publication statusAccepted/In press - Jun 13 2016

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Octopodiformes
Visual Field Tests
Visual Fields
Glaucoma
Cluster Analysis

ASJC Scopus subject areas

  • Ophthalmology

Cite this

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title = "Influence of Test Strategy on Octopus Perimeter Cluster Mean Defect Values: Adaptive Bracketing Normal Strategy Versus Tendency-oriented Perimetry",
abstract = "BACKGROUND/PURPOSE:: Using adaptive bracketing “normal” (N) strategy it has been shown that cluster trend analysis is useful for early detection of glaucomatous progression with Octopus perimetry. However, in clinical practice “tendency-oriented perimetry” (TOP) is mostly used. In TOP, responses given at neighboring points modify the threshold values, and this process does not respect cluster borders. In the current investigation, we evaluated the influence of test strategy on the cluster mean defect (cluster MD) values. MATERIALS AND METHODS:: Sixty-nine eyes with normal visual field and 63 glaucoma eyes with predominantly mild to moderate glaucomatous visual field defect underwent Octopus perimetry with N and TOP strategy on the same day. Cluster MD values and global parameters were compared between test strategies in each group. RESULTS:: In the normal group, all global parameters (P≤0.0003) and cluster MD for 6 uncorrected and 5 corrected clusters differed significantly between the strategies (P≤0.0052). In the glaucoma group, no significant difference was seen for global mean sensitivity and global MD, but square loss variance reflecting inhomogeneity was 1.0 dB lower with TOP (P",
author = "G. Holl{\'o}",
year = "2016",
month = "6",
day = "13",
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language = "English",
journal = "Journal of Glaucoma",
issn = "1057-0829",
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AU - Holló, G.

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N2 - BACKGROUND/PURPOSE:: Using adaptive bracketing “normal” (N) strategy it has been shown that cluster trend analysis is useful for early detection of glaucomatous progression with Octopus perimetry. However, in clinical practice “tendency-oriented perimetry” (TOP) is mostly used. In TOP, responses given at neighboring points modify the threshold values, and this process does not respect cluster borders. In the current investigation, we evaluated the influence of test strategy on the cluster mean defect (cluster MD) values. MATERIALS AND METHODS:: Sixty-nine eyes with normal visual field and 63 glaucoma eyes with predominantly mild to moderate glaucomatous visual field defect underwent Octopus perimetry with N and TOP strategy on the same day. Cluster MD values and global parameters were compared between test strategies in each group. RESULTS:: In the normal group, all global parameters (P≤0.0003) and cluster MD for 6 uncorrected and 5 corrected clusters differed significantly between the strategies (P≤0.0052). In the glaucoma group, no significant difference was seen for global mean sensitivity and global MD, but square loss variance reflecting inhomogeneity was 1.0 dB lower with TOP (P

AB - BACKGROUND/PURPOSE:: Using adaptive bracketing “normal” (N) strategy it has been shown that cluster trend analysis is useful for early detection of glaucomatous progression with Octopus perimetry. However, in clinical practice “tendency-oriented perimetry” (TOP) is mostly used. In TOP, responses given at neighboring points modify the threshold values, and this process does not respect cluster borders. In the current investigation, we evaluated the influence of test strategy on the cluster mean defect (cluster MD) values. MATERIALS AND METHODS:: Sixty-nine eyes with normal visual field and 63 glaucoma eyes with predominantly mild to moderate glaucomatous visual field defect underwent Octopus perimetry with N and TOP strategy on the same day. Cluster MD values and global parameters were compared between test strategies in each group. RESULTS:: In the normal group, all global parameters (P≤0.0003) and cluster MD for 6 uncorrected and 5 corrected clusters differed significantly between the strategies (P≤0.0052). In the glaucoma group, no significant difference was seen for global mean sensitivity and global MD, but square loss variance reflecting inhomogeneity was 1.0 dB lower with TOP (P

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