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13.11.2023 | Retinal Disorders

Test-retest repeatability and agreement of the quantitative contrast sensitivity function test: towards the validation of a new clinical endpoint

verfasst von: Matthew Finn, Filippos Vingopoulos, Yan Zhao, Paul Zhou, Augustine Bannerman, Francesco Romano, Xinyi Ding, Zakariyya Hassan, Nimesh A. Patel, David M. Wu, John B. Miller

Erschienen in: Graefe's Archive for Clinical and Experimental Ophthalmology

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Abstract

Purpose

The purpose of this study is to investigate test-retest reliability and agreement of the quantitative contrast sensitivity function test (qCSF) in the retina clinic.

Methods

A total of 121 right eyes of 121 patients were tested and consecutively re-tested with qCSF in the retina clinic. Outcomes included area under the logarithm of contrast sensitivity function curve (AULCSF), contrast acuity, and contrast sensitivity thresholds at 1–18 cycles per degree (cpd). Test-retest means were compared with paired t-test, variability was compared with the Brown-Forsythe test, and intraclass correlation coefficient (ICC) and Bland Altman plots evaluated reliability and agreement.

Results

Mean test-retest differences for all qCSF metrics ranged from 0.02 to 0.05 log units without statistically significant differences in variability. Standard deviations ranged from 0.08 to 0.14. Coefficients of repeatability ranged from 0.16 to 0.27 log units. ICC > 0.9 for all metrics except 1cpd (ICC = 0.84, all p < 0.001); AULCSF ICC = 0.971.

Conclusion

qCSF-measured contrast sensitivity shows great test-retest repeatability and agreement in the retina clinic.
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Metadaten
Titel
Test-retest repeatability and agreement of the quantitative contrast sensitivity function test: towards the validation of a new clinical endpoint
verfasst von
Matthew Finn
Filippos Vingopoulos
Yan Zhao
Paul Zhou
Augustine Bannerman
Francesco Romano
Xinyi Ding
Zakariyya Hassan
Nimesh A. Patel
David M. Wu
John B. Miller
Publikationsdatum
13.11.2023
Verlag
Springer Berlin Heidelberg
Erschienen in
Graefe's Archive for Clinical and Experimental Ophthalmology
Print ISSN: 0721-832X
Elektronische ISSN: 1435-702X
DOI
https://doi.org/10.1007/s00417-023-06291-y