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Adaptation to Progressive Additive Lenses: Potential Factors to Consider
People develop presbyopia as part of the normal aging process. Most presbyopes adapt to progressive additive lens (PALs), while others do not. This investigation sought to determine whether the ability to modify disparity vergence or phoria was correlated to PALs adaptation. In experiment 1, a doubl...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5451391/ https://www.ncbi.nlm.nih.gov/pubmed/28566706 http://dx.doi.org/10.1038/s41598-017-02851-5 |
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author | Alvarez, Tara L. Kim, Eun H. Granger-Donetti, Bérangère |
author_facet | Alvarez, Tara L. Kim, Eun H. Granger-Donetti, Bérangère |
author_sort | Alvarez, Tara L. |
collection | PubMed |
description | People develop presbyopia as part of the normal aging process. Most presbyopes adapt to progressive additive lens (PALs), while others do not. This investigation sought to determine whether the ability to modify disparity vergence or phoria was correlated to PALs adaptation. In experiment 1, a double-step paradigm quantified the ability to modify convergence responses in sixteen presbyopes. In experiment 2, thirty-one incipient presbyopes participated in a 5-minute sustained fixation task to evoke phoria adaptation where the magnitude and rate of phoria adaptation were measured. Then, the experiment was repeated after wearing PALs for one month. Linear regression analyses were conducted between the following parameters: near point of convergence, positive fusional vergence at near, vergence facility, net change in the magnitude of phoria adaptation, and the rate of phoria adaptation. The ability to change convergence average peak velocity was significantly greater (p < 0.03) in presbyopic PALs adapters compared to presbyopic PALs non-adapters. The rate of phoria adaptation and vergence facility were significantly greater (p < 0.03) in incipient presbyopic PALs adapters compared to incipient presbyopic PALs non-adapters. Vergence facility and the rate of phoria adaptation may have potential clinical utility in differentiating which patients may adapt to PALs and which ones will have more difficulty. |
format | Online Article Text |
id | pubmed-5451391 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-54513912017-06-01 Adaptation to Progressive Additive Lenses: Potential Factors to Consider Alvarez, Tara L. Kim, Eun H. Granger-Donetti, Bérangère Sci Rep Article People develop presbyopia as part of the normal aging process. Most presbyopes adapt to progressive additive lens (PALs), while others do not. This investigation sought to determine whether the ability to modify disparity vergence or phoria was correlated to PALs adaptation. In experiment 1, a double-step paradigm quantified the ability to modify convergence responses in sixteen presbyopes. In experiment 2, thirty-one incipient presbyopes participated in a 5-minute sustained fixation task to evoke phoria adaptation where the magnitude and rate of phoria adaptation were measured. Then, the experiment was repeated after wearing PALs for one month. Linear regression analyses were conducted between the following parameters: near point of convergence, positive fusional vergence at near, vergence facility, net change in the magnitude of phoria adaptation, and the rate of phoria adaptation. The ability to change convergence average peak velocity was significantly greater (p < 0.03) in presbyopic PALs adapters compared to presbyopic PALs non-adapters. The rate of phoria adaptation and vergence facility were significantly greater (p < 0.03) in incipient presbyopic PALs adapters compared to incipient presbyopic PALs non-adapters. Vergence facility and the rate of phoria adaptation may have potential clinical utility in differentiating which patients may adapt to PALs and which ones will have more difficulty. Nature Publishing Group UK 2017-05-31 /pmc/articles/PMC5451391/ /pubmed/28566706 http://dx.doi.org/10.1038/s41598-017-02851-5 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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 images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Alvarez, Tara L. Kim, Eun H. Granger-Donetti, Bérangère Adaptation to Progressive Additive Lenses: Potential Factors to Consider |
title | Adaptation to Progressive Additive Lenses: Potential Factors to Consider |
title_full | Adaptation to Progressive Additive Lenses: Potential Factors to Consider |
title_fullStr | Adaptation to Progressive Additive Lenses: Potential Factors to Consider |
title_full_unstemmed | Adaptation to Progressive Additive Lenses: Potential Factors to Consider |
title_short | Adaptation to Progressive Additive Lenses: Potential Factors to Consider |
title_sort | adaptation to progressive additive lenses: potential factors to consider |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5451391/ https://www.ncbi.nlm.nih.gov/pubmed/28566706 http://dx.doi.org/10.1038/s41598-017-02851-5 |
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