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A proposed correction in the weighted method to score the Ishihara test
OBJECTIVE: Ishihara test is a color vision test, whose results consider that all plates of the test have the same weighting. Rodriguez-Carmona et al. (Aviat Space Environ Med 83:19–29, 2012) proposed an equation to quantify the Ishihara test results (severity index), which took an account the rate o...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6537449/ https://www.ncbi.nlm.nih.gov/pubmed/31138308 http://dx.doi.org/10.1186/s13104-019-4320-2 |
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author | Miquilini, Leticia Ratis, Mauro Augusto Souza Lima, Monica Gomes Bento-Torres, Natali Valim Oliver Lacerda, Eliza Maria da Costa Brito Cortes, Maria Izabel Tentes Rodrigues, Anderson Raiol Silveira, Luiz Carlos de Lima Souza, Givago da Silva |
author_facet | Miquilini, Leticia Ratis, Mauro Augusto Souza Lima, Monica Gomes Bento-Torres, Natali Valim Oliver Lacerda, Eliza Maria da Costa Brito Cortes, Maria Izabel Tentes Rodrigues, Anderson Raiol Silveira, Luiz Carlos de Lima Souza, Givago da Silva |
author_sort | Miquilini, Leticia |
collection | PubMed |
description | OBJECTIVE: Ishihara test is a color vision test, whose results consider that all plates of the test have the same weighting. Rodriguez-Carmona et al. (Aviat Space Environ Med 83:19–29, 2012) proposed an equation to quantify the Ishihara test results (severity index), which took an account the rate of hits from the different plates of the test considering the performance of trichromat or colorblind population. We proposed a correction in Rodiguez-Carmona’s equation for the severity index. We evaluated 60 normal trichromats and 107 subjects with congenital color deficiency. We calculated three indexes to quantify the results of each subject: a non-weighted index, a weighted index similar to the Rodriguez-Carmona et al., and a weighted index modified which combined the hit frequency for each plate in a trichromat population and of the error reading frequency for each plate in color-blind populations. RESULTS: Compared to the non-weighted evaluation, the weighted index was reduced by 22.95%, 32.92%, and 35.38% from trichromats, protan and deutan groups, respectively. Receiver Operating Characteristics (ROC) analysis showed perfect performance of the classifier for all metrics to measure the Ishihara test results. The proposal correction changed significantly the value of the index, but the overall benefits were small. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s13104-019-4320-2) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-6537449 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-65374492019-06-03 A proposed correction in the weighted method to score the Ishihara test Miquilini, Leticia Ratis, Mauro Augusto Souza Lima, Monica Gomes Bento-Torres, Natali Valim Oliver Lacerda, Eliza Maria da Costa Brito Cortes, Maria Izabel Tentes Rodrigues, Anderson Raiol Silveira, Luiz Carlos de Lima Souza, Givago da Silva BMC Res Notes Research Note OBJECTIVE: Ishihara test is a color vision test, whose results consider that all plates of the test have the same weighting. Rodriguez-Carmona et al. (Aviat Space Environ Med 83:19–29, 2012) proposed an equation to quantify the Ishihara test results (severity index), which took an account the rate of hits from the different plates of the test considering the performance of trichromat or colorblind population. We proposed a correction in Rodiguez-Carmona’s equation for the severity index. We evaluated 60 normal trichromats and 107 subjects with congenital color deficiency. We calculated three indexes to quantify the results of each subject: a non-weighted index, a weighted index similar to the Rodriguez-Carmona et al., and a weighted index modified which combined the hit frequency for each plate in a trichromat population and of the error reading frequency for each plate in color-blind populations. RESULTS: Compared to the non-weighted evaluation, the weighted index was reduced by 22.95%, 32.92%, and 35.38% from trichromats, protan and deutan groups, respectively. Receiver Operating Characteristics (ROC) analysis showed perfect performance of the classifier for all metrics to measure the Ishihara test results. The proposal correction changed significantly the value of the index, but the overall benefits were small. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1186/s13104-019-4320-2) contains supplementary material, which is available to authorized users. BioMed Central 2019-05-28 /pmc/articles/PMC6537449/ /pubmed/31138308 http://dx.doi.org/10.1186/s13104-019-4320-2 Text en © The Author(s) 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Note Miquilini, Leticia Ratis, Mauro Augusto Souza Lima, Monica Gomes Bento-Torres, Natali Valim Oliver Lacerda, Eliza Maria da Costa Brito Cortes, Maria Izabel Tentes Rodrigues, Anderson Raiol Silveira, Luiz Carlos de Lima Souza, Givago da Silva A proposed correction in the weighted method to score the Ishihara test |
title | A proposed correction in the weighted method to score the Ishihara test |
title_full | A proposed correction in the weighted method to score the Ishihara test |
title_fullStr | A proposed correction in the weighted method to score the Ishihara test |
title_full_unstemmed | A proposed correction in the weighted method to score the Ishihara test |
title_short | A proposed correction in the weighted method to score the Ishihara test |
title_sort | proposed correction in the weighted method to score the ishihara test |
topic | Research Note |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6537449/ https://www.ncbi.nlm.nih.gov/pubmed/31138308 http://dx.doi.org/10.1186/s13104-019-4320-2 |
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