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Variability of Accommodative Microfluctuations in Myopic and Emmetropic Juveniles during Sustained near Work

Near work has been considered to be a potential risk factor for the onset of myopia, but with inadequate evidence. Chinese adolescents use digital devices for near work, such as study and entertainment purposes, especially during the COVID-19 pandemic. In this study, we investigated the influence of...

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Autores principales: Yu, Hanyang, Zeng, Junwen, Li, Zhouyue, Hu, Yin, Cui, Dongmei, Zhao, Wenchen, Zhao, Feng, Yang, Xiao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9222619/
https://www.ncbi.nlm.nih.gov/pubmed/35742313
http://dx.doi.org/10.3390/ijerph19127066
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author Yu, Hanyang
Zeng, Junwen
Li, Zhouyue
Hu, Yin
Cui, Dongmei
Zhao, Wenchen
Zhao, Feng
Yang, Xiao
author_facet Yu, Hanyang
Zeng, Junwen
Li, Zhouyue
Hu, Yin
Cui, Dongmei
Zhao, Wenchen
Zhao, Feng
Yang, Xiao
author_sort Yu, Hanyang
collection PubMed
description Near work has been considered to be a potential risk factor for the onset of myopia, but with inadequate evidence. Chinese adolescents use digital devices for near work, such as study and entertainment purposes, especially during the COVID-19 pandemic. In this study, we investigated the influence of prolonged periods of near work on accommodative response, accommodative microfluctuations (AMFs), and pupil diameter between juvenile subjects of myopia and emmetropia. Sixty juveniles (30 myopes and 30 emmetropes) were recruited for the study. Participants were instructed to play a video game on a tablet PC at a distance of 33.3 cm for 40 min. Accommodative response and pupil diameter were measured with an open-field infrared refractometer in High-speed mode. Parameters of the subjects were measured once every 10 min, and analyzed by one-way repeated measure ANOVA for variation tendency. There were no significant differences between emmetropia and myopia groups with respect to age and sex (p > 0.05). The low-frequency component (LFC) of myopia gradually increased with time, reached a peak at 30 min, and then declined (p = 0.043). The high-frequency component (HFC) of myopia also reached a peak at 30 min (p = 0.036). Nevertheless, there was no significant difference in the LFC (p = 0.171) or HFC (p = 0.278) of the emmetropia group at each time point. There was no significant difference in the mean and standard deviation of the accommodative response and pupil diameter both in emmetropic and myopic juveniles. Compared with juvenile emmetropes, myopes exhibit an unstable tendency in their accommodation system for prolonged near work at a certain time point. Accommodative microfluctuations may be a sensitive, objective indicator of fatigue under sustained near work in juvenile myopes.
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spelling pubmed-92226192022-06-24 Variability of Accommodative Microfluctuations in Myopic and Emmetropic Juveniles during Sustained near Work Yu, Hanyang Zeng, Junwen Li, Zhouyue Hu, Yin Cui, Dongmei Zhao, Wenchen Zhao, Feng Yang, Xiao Int J Environ Res Public Health Article Near work has been considered to be a potential risk factor for the onset of myopia, but with inadequate evidence. Chinese adolescents use digital devices for near work, such as study and entertainment purposes, especially during the COVID-19 pandemic. In this study, we investigated the influence of prolonged periods of near work on accommodative response, accommodative microfluctuations (AMFs), and pupil diameter between juvenile subjects of myopia and emmetropia. Sixty juveniles (30 myopes and 30 emmetropes) were recruited for the study. Participants were instructed to play a video game on a tablet PC at a distance of 33.3 cm for 40 min. Accommodative response and pupil diameter were measured with an open-field infrared refractometer in High-speed mode. Parameters of the subjects were measured once every 10 min, and analyzed by one-way repeated measure ANOVA for variation tendency. There were no significant differences between emmetropia and myopia groups with respect to age and sex (p > 0.05). The low-frequency component (LFC) of myopia gradually increased with time, reached a peak at 30 min, and then declined (p = 0.043). The high-frequency component (HFC) of myopia also reached a peak at 30 min (p = 0.036). Nevertheless, there was no significant difference in the LFC (p = 0.171) or HFC (p = 0.278) of the emmetropia group at each time point. There was no significant difference in the mean and standard deviation of the accommodative response and pupil diameter both in emmetropic and myopic juveniles. Compared with juvenile emmetropes, myopes exhibit an unstable tendency in their accommodation system for prolonged near work at a certain time point. Accommodative microfluctuations may be a sensitive, objective indicator of fatigue under sustained near work in juvenile myopes. MDPI 2022-06-09 /pmc/articles/PMC9222619/ /pubmed/35742313 http://dx.doi.org/10.3390/ijerph19127066 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yu, Hanyang
Zeng, Junwen
Li, Zhouyue
Hu, Yin
Cui, Dongmei
Zhao, Wenchen
Zhao, Feng
Yang, Xiao
Variability of Accommodative Microfluctuations in Myopic and Emmetropic Juveniles during Sustained near Work
title Variability of Accommodative Microfluctuations in Myopic and Emmetropic Juveniles during Sustained near Work
title_full Variability of Accommodative Microfluctuations in Myopic and Emmetropic Juveniles during Sustained near Work
title_fullStr Variability of Accommodative Microfluctuations in Myopic and Emmetropic Juveniles during Sustained near Work
title_full_unstemmed Variability of Accommodative Microfluctuations in Myopic and Emmetropic Juveniles during Sustained near Work
title_short Variability of Accommodative Microfluctuations in Myopic and Emmetropic Juveniles during Sustained near Work
title_sort variability of accommodative microfluctuations in myopic and emmetropic juveniles during sustained near work
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9222619/
https://www.ncbi.nlm.nih.gov/pubmed/35742313
http://dx.doi.org/10.3390/ijerph19127066
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