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Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device

Purpose. To compare measures of visual acuity (VA) and contrast sensitivity (CS) from the Thompson Xpert 2000 and MultiQuity (MiQ) devices. Methods. Corrected distance VA (CDVA) and CS were measured in the right eye of 73 subjects, on an established system (Thompson Xpert) and a novel system (MiQ 72...

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Autores principales: Smolarek-Kasprzak, Patrycja, Nolan, John M., Beatty, Stephen, Dennison, Jessica, Akuffo, Kwadwo Owusu, Kuchling, Robert, Stack, Jim, O'Regan, Graham
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4280651/
https://www.ncbi.nlm.nih.gov/pubmed/25580278
http://dx.doi.org/10.1155/2014/180317
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author Smolarek-Kasprzak, Patrycja
Nolan, John M.
Beatty, Stephen
Dennison, Jessica
Akuffo, Kwadwo Owusu
Kuchling, Robert
Stack, Jim
O'Regan, Graham
author_facet Smolarek-Kasprzak, Patrycja
Nolan, John M.
Beatty, Stephen
Dennison, Jessica
Akuffo, Kwadwo Owusu
Kuchling, Robert
Stack, Jim
O'Regan, Graham
author_sort Smolarek-Kasprzak, Patrycja
collection PubMed
description Purpose. To compare measures of visual acuity (VA) and contrast sensitivity (CS) from the Thompson Xpert 2000 and MultiQuity (MiQ) devices. Methods. Corrected distance VA (CDVA) and CS were measured in the right eye of 73 subjects, on an established system (Thompson Xpert) and a novel system (MiQ 720). Regression was used to convert MiQ scores into the Thompson scale. Agreement between the converted MiQ and Thompson scores was investigated using standard agreement indices. Test-retest variability for both devices was also investigated, for a separate sample of 24 subjects. Results. For CDVA, agreement was strong between the MiQ and Thomson devices (accuracy = 0.993, precision = 0.889, CCC = 0.883). For CS, agreement was also strong (accuracy = 0.996, precision = 0.911, CCC = 0.907). Agreement was unaffected by demographic variables or by presence/absence of ocular pathology. Test-retest agreement indices for both devices were excellent: in the range 0.88–0.96 for CDVA and in the range 0.90–0.98 for CS. Conclusion. MiQ measurements exhibit strong agreement with corresponding Thomson measurements, and test-retest results are good for both devices. Agreement between the two devices is unaffected by age or ocular pathology.
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spelling pubmed-42806512015-01-11 Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device Smolarek-Kasprzak, Patrycja Nolan, John M. Beatty, Stephen Dennison, Jessica Akuffo, Kwadwo Owusu Kuchling, Robert Stack, Jim O'Regan, Graham J Ophthalmol Research Article Purpose. To compare measures of visual acuity (VA) and contrast sensitivity (CS) from the Thompson Xpert 2000 and MultiQuity (MiQ) devices. Methods. Corrected distance VA (CDVA) and CS were measured in the right eye of 73 subjects, on an established system (Thompson Xpert) and a novel system (MiQ 720). Regression was used to convert MiQ scores into the Thompson scale. Agreement between the converted MiQ and Thompson scores was investigated using standard agreement indices. Test-retest variability for both devices was also investigated, for a separate sample of 24 subjects. Results. For CDVA, agreement was strong between the MiQ and Thomson devices (accuracy = 0.993, precision = 0.889, CCC = 0.883). For CS, agreement was also strong (accuracy = 0.996, precision = 0.911, CCC = 0.907). Agreement was unaffected by demographic variables or by presence/absence of ocular pathology. Test-retest agreement indices for both devices were excellent: in the range 0.88–0.96 for CDVA and in the range 0.90–0.98 for CS. Conclusion. MiQ measurements exhibit strong agreement with corresponding Thomson measurements, and test-retest results are good for both devices. Agreement between the two devices is unaffected by age or ocular pathology. Hindawi Publishing Corporation 2014 2014-12-16 /pmc/articles/PMC4280651/ /pubmed/25580278 http://dx.doi.org/10.1155/2014/180317 Text en Copyright © 2014 Patrycja Smolarek-Kasprzak et al. https://creativecommons.org/licenses/by/3.0/This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Smolarek-Kasprzak, Patrycja
Nolan, John M.
Beatty, Stephen
Dennison, Jessica
Akuffo, Kwadwo Owusu
Kuchling, Robert
Stack, Jim
O'Regan, Graham
Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device
title Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device
title_full Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device
title_fullStr Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device
title_full_unstemmed Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device
title_short Measuring Visual Function Using the MultiQuity System: Comparison with an Established Device
title_sort measuring visual function using the multiquity system: comparison with an established device
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4280651/
https://www.ncbi.nlm.nih.gov/pubmed/25580278
http://dx.doi.org/10.1155/2014/180317
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