Prediction of distance visual acuity in presbyopic astigmatic subjects

Abstract This study was aimed to determine the effect of the amount of astigmatism on distance visual acuity, and to provide a prediction formula of visual acuity according to astigmatism, in a presbyopic population. We comprised 318 eyes of 318 consecutive patients (158 phakic and 160 pseudophakic...

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Autores principales:	Rie Hoshikawa, Kazutaka Kamiya, Fusako Fujimura, Nobuyuki Shoji
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/79c8f654ef454570a2af370dae8b9337
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spelling	oai:doaj.org-article:79c8f654ef454570a2af370dae8b93372021-12-02T16:36:13ZPrediction of distance visual acuity in presbyopic astigmatic subjects10.1038/s41598-021-85313-32045-2322https://doaj.org/article/79c8f654ef454570a2af370dae8b93372021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-85313-3https://doaj.org/toc/2045-2322Abstract This study was aimed to determine the effect of the amount of astigmatism on distance visual acuity, and to provide a prediction formula of visual acuity according to astigmatism, in a presbyopic population. We comprised 318 eyes of 318 consecutive patients (158 phakic and 160 pseudophakic subjects) without any eye diseases, except for refractive errors with astigmatism of 3 diopter or less. We assessed the relationship of the spherical equivalent visual acuity (SEVA) with astigmatism, and also provided a regression formula of visual acuity according to astigmatism in such subjects. We found a significant correlation between the SEVA and the amount of astigmatism (r = 0.715, p < 0.001) in the entire study population. We obtained similar results, not only in phakic eyes (r = 0.718, p < 0.001), but also in pseudophakic eyes (r = 0.717, p < 0.001). The regression formula was expressed as follows: y = 0.017x2 + 0.125x − 0.116 (R2 = 0.544), where y = logMAR SEVA, and x = astigmatism. We also found no significant differences in the SEVA for matched comparison among the with-the-rule (WTR), against-the-rule (ATR), and oblique (OBL) astigmatism subgroups (p = 0.922). These regression formulas may be clinically beneficial not only for estimating the visual prognosis after astigmatic correction, but also for determining the surgical indication of astigmatic correction.Rie HoshikawaKazutaka KamiyaFusako FujimuraNobuyuki ShojiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-7 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Rie Hoshikawa Kazutaka Kamiya Fusako Fujimura Nobuyuki Shoji Prediction of distance visual acuity in presbyopic astigmatic subjects
description	Abstract This study was aimed to determine the effect of the amount of astigmatism on distance visual acuity, and to provide a prediction formula of visual acuity according to astigmatism, in a presbyopic population. We comprised 318 eyes of 318 consecutive patients (158 phakic and 160 pseudophakic subjects) without any eye diseases, except for refractive errors with astigmatism of 3 diopter or less. We assessed the relationship of the spherical equivalent visual acuity (SEVA) with astigmatism, and also provided a regression formula of visual acuity according to astigmatism in such subjects. We found a significant correlation between the SEVA and the amount of astigmatism (r = 0.715, p < 0.001) in the entire study population. We obtained similar results, not only in phakic eyes (r = 0.718, p < 0.001), but also in pseudophakic eyes (r = 0.717, p < 0.001). The regression formula was expressed as follows: y = 0.017x2 + 0.125x − 0.116 (R2 = 0.544), where y = logMAR SEVA, and x = astigmatism. We also found no significant differences in the SEVA for matched comparison among the with-the-rule (WTR), against-the-rule (ATR), and oblique (OBL) astigmatism subgroups (p = 0.922). These regression formulas may be clinically beneficial not only for estimating the visual prognosis after astigmatic correction, but also for determining the surgical indication of astigmatic correction.
format	article
author	Rie Hoshikawa Kazutaka Kamiya Fusako Fujimura Nobuyuki Shoji
author_facet	Rie Hoshikawa Kazutaka Kamiya Fusako Fujimura Nobuyuki Shoji
author_sort	Rie Hoshikawa
title	Prediction of distance visual acuity in presbyopic astigmatic subjects
title_short	Prediction of distance visual acuity in presbyopic astigmatic subjects
title_full	Prediction of distance visual acuity in presbyopic astigmatic subjects
title_fullStr	Prediction of distance visual acuity in presbyopic astigmatic subjects
title_full_unstemmed	Prediction of distance visual acuity in presbyopic astigmatic subjects
title_sort	prediction of distance visual acuity in presbyopic astigmatic subjects
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/79c8f654ef454570a2af370dae8b9337
work_keys_str_mv	AT riehoshikawa predictionofdistancevisualacuityinpresbyopicastigmaticsubjects AT kazutakakamiya predictionofdistancevisualacuityinpresbyopicastigmaticsubjects AT fusakofujimura predictionofdistancevisualacuityinpresbyopicastigmaticsubjects AT nobuyukishoji predictionofdistancevisualacuityinpresbyopicastigmaticsubjects
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Prediction of distance visual acuity in presbyopic astigmatic subjects

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