Reliability in perimetric multichannel contrast sensitivity measurements
| Autor: | M. J. Luque, Vicente J. Camps, Vicenta Moncho, Dolores de Fez, Pascual Capilla |
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| Přispěvatelé: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía, Grupo de Óptica y Percepción Visual (GOPV) |
| Rok vydání: | 2014 |
| Předmět: |
Adult
Male Fovea Centralis media_common.quotation_subject Multichannel perimetry Agreement law.invention Contrast Sensitivity Young Adult Optics Parvocellular cell law Humans Contrast (vision) Repeatability Contrast sensitivity Reliability (statistics) Óptica media_common Mathematics Reproducibility business.industry Reproducibility of Results Healthy Volunteers Visual field Ophthalmology Koniocellular cell ROC Curve Achromatic lens Visual Field Tests Female Visual Fields business Optometry Biomedical engineering |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
| ISSN: | 1444-0938 0816-4622 |
| DOI: | 10.1111/cxo.12193 |
| Popis: | Background: In this study, the reliability of perimetric contrast sensitivity measurements favouring the achromatic, the red-green and the blue-yellow post-receptorial mechanisms was analysed. Methods: A new technique, multichannel ATD perimetry, provides spatial and temporal stimuli favouring the detection by an achromatic mechanism (A), from a magno or parvocellular origin or by a red-green (RG) chromatic mechanism, with a parvocellular origin or a blue-yellow (BY) mechanism, with a koniocellular origin. The repeatability and reproducibility of contrast sensitivity measurements with these stimuli were studied in a group of 40 healthy subjects. The analysis was carried out on 21 testing points within a 60° by 40° fovea-centred region of the visual field. Results: The within-observer repeatability for the four mechanisms studied is either good or excellent when the intra-class correlation coefficient (ICC) can be calculated. For the remaining points, the Friedman's test finds that the measurements are repeatable. The between-observer reproducibility was either excellent or good in cases where the ICC was applied and according to the Friedman's test all results were reproducible. Conclusions: The results obtained showed good repeatability and reproducibility with A, RG and BY stimuli, although with BY stimuli repeatability is slightly worse. Future studies on the diagnostic validity of this device are based on the fact that changes of sensitivity can be compared by means of a visual single task, contrast sensitivity measurement and using a common metric. The ATD multichannel perimeter was built thanks to the support of the Spanish Ministerio de Ciencia y Tecnología Grants DPI2000-0116-P4-02 and PTR 1995-0909-OP, in collaboration with INDUSTRIAS DE OPTICA SA (San Cugat del Vallés, Spain). |
| Databáze: | OpenAIRE |
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