Impact of light conditions on reading ability following multifocal pseudophakic corrections

Georgios Labiris, Panagiota Ntonti, Eirini-Kanella Panagiotopoulou, Aristeidis Konstantinidis, Maria Gkika, Doukas Dardabounis, Irfan Perente, Haris Sideroudi Department of Ophthalmology, University Hospital of Alexandroupolis, Alexandroupolis, Greece Purpose: To examine the impact of light intens...

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Autores principales:	Labiris G, Ntonti P, Panagiotopoulou EK, Konstantinidis A, Gkika M, Dardabounis D, Perente I, Sideroudi H
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2018
Materias:	presbyopia light intensity Kelvin Foot-Candles trifocal bifocal Ophthalmology RE1-994
Acceso en línea:	https://doaj.org/article/5ddef0a3afc5496f90c5485061b45a07
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spelling	oai:doaj.org-article:5ddef0a3afc5496f90c5485061b45a072021-12-02T02:14:32ZImpact of light conditions on reading ability following multifocal pseudophakic corrections1177-5483https://doaj.org/article/5ddef0a3afc5496f90c5485061b45a072018-12-01T00:00:00Zhttps://www.dovepress.com/impact-of-light-conditions-on-reading-ability-following-multifocal-pse-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Georgios Labiris, Panagiota Ntonti, Eirini-Kanella Panagiotopoulou, Aristeidis Konstantinidis, Maria Gkika, Doukas Dardabounis, Irfan Perente, Haris Sideroudi Department of Ophthalmology, University Hospital of Alexandroupolis, Alexandroupolis, Greece Purpose: To examine the impact of light intensity and temperature on reading performance following bilateral pseudophakic multifocal presbyopic correction.Patients and methods: This is a prospective clinic-based trial conducted at the Department of Ophthalmology in the University Hospital of Alexandroupolis, Greece. Three groups of patients were formed (G1: patients with bilateral bifocal implantation, G2: patients with bilateral trifocal implantation, and control group: patients with bilateral pseudophakic monofocal implantation). Reading ability was quantified with the Greek version of MNREAD chart with minimal reading speed at 80 words/min for the following light intensities (25, 50, and 75 Foot-Candles [FC]) and temperatures (3,000, 4,000, and 6,000 K). Preferred light conditions for reading were assessed, as well. ClinicalTrials.gov Identifier: NCT03226561.Results: Control group demonstrated significantly lower reading ability at all light combinations with maximal ability at 75 FC and 6,000 K (0.58±0.18 logMAR). Bifocal group presented a light-dependent reading ability that ranged from 0.45±0.08 logMAR (25 FC and 3,000 K) to 0.40±0.11 logMAR (75 FC and 4,000 or 6,000 K). Trifocal participants presented the best reading ability that was light intensity-independent; however, their performance was reduced at 6,000 K. G1 and G2 preferred primarily intermediate light temperature, while control participants preferred cold light temperature.Conclusion: Multifocal pseudophakic corrections improve reading ability; however, they present variable efficacy according to the light conditions. Keywords: presbyopia, light intensity, Kelvin, Foot-Candles, trifocal, bifocalLabiris GNtonti PPanagiotopoulou EKKonstantinidis AGkika MDardabounis DPerente ISideroudi HDove Medical Pressarticlepresbyopialight intensityKelvinFoot-CandlestrifocalbifocalOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 12, Pp 2639-2646 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	presbyopia light intensity Kelvin Foot-Candles trifocal bifocal Ophthalmology RE1-994
spellingShingle	presbyopia light intensity Kelvin Foot-Candles trifocal bifocal Ophthalmology RE1-994 Labiris G Ntonti P Panagiotopoulou EK Konstantinidis A Gkika M Dardabounis D Perente I Sideroudi H Impact of light conditions on reading ability following multifocal pseudophakic corrections
description	Georgios Labiris, Panagiota Ntonti, Eirini-Kanella Panagiotopoulou, Aristeidis Konstantinidis, Maria Gkika, Doukas Dardabounis, Irfan Perente, Haris Sideroudi Department of Ophthalmology, University Hospital of Alexandroupolis, Alexandroupolis, Greece Purpose: To examine the impact of light intensity and temperature on reading performance following bilateral pseudophakic multifocal presbyopic correction.Patients and methods: This is a prospective clinic-based trial conducted at the Department of Ophthalmology in the University Hospital of Alexandroupolis, Greece. Three groups of patients were formed (G1: patients with bilateral bifocal implantation, G2: patients with bilateral trifocal implantation, and control group: patients with bilateral pseudophakic monofocal implantation). Reading ability was quantified with the Greek version of MNREAD chart with minimal reading speed at 80 words/min for the following light intensities (25, 50, and 75 Foot-Candles [FC]) and temperatures (3,000, 4,000, and 6,000 K). Preferred light conditions for reading were assessed, as well. ClinicalTrials.gov Identifier: NCT03226561.Results: Control group demonstrated significantly lower reading ability at all light combinations with maximal ability at 75 FC and 6,000 K (0.58±0.18 logMAR). Bifocal group presented a light-dependent reading ability that ranged from 0.45±0.08 logMAR (25 FC and 3,000 K) to 0.40±0.11 logMAR (75 FC and 4,000 or 6,000 K). Trifocal participants presented the best reading ability that was light intensity-independent; however, their performance was reduced at 6,000 K. G1 and G2 preferred primarily intermediate light temperature, while control participants preferred cold light temperature.Conclusion: Multifocal pseudophakic corrections improve reading ability; however, they present variable efficacy according to the light conditions. Keywords: presbyopia, light intensity, Kelvin, Foot-Candles, trifocal, bifocal
format	article
author	Labiris G Ntonti P Panagiotopoulou EK Konstantinidis A Gkika M Dardabounis D Perente I Sideroudi H
author_facet	Labiris G Ntonti P Panagiotopoulou EK Konstantinidis A Gkika M Dardabounis D Perente I Sideroudi H
author_sort	Labiris G
title	Impact of light conditions on reading ability following multifocal pseudophakic corrections
title_short	Impact of light conditions on reading ability following multifocal pseudophakic corrections
title_full	Impact of light conditions on reading ability following multifocal pseudophakic corrections
title_fullStr	Impact of light conditions on reading ability following multifocal pseudophakic corrections
title_full_unstemmed	Impact of light conditions on reading ability following multifocal pseudophakic corrections
title_sort	impact of light conditions on reading ability following multifocal pseudophakic corrections
publisher	Dove Medical Press
publishDate	2018
url	https://doaj.org/article/5ddef0a3afc5496f90c5485061b45a07
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_version_	1718402597896847360

Impact of light conditions on reading ability following multifocal pseudophakic corrections

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