NDLI: Variation of choroidal thickness during the waking period over three consecutive days in different degrees of myopia and emmetropia using optical coherence tomography.

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Variation of choroidal thickness during the waking period over three consecutive days in different degrees of myopia and emmetropia using optical coherence tomography.

Content Provider	Europe PMC
Author	Jiang, Xianming Xiao, Ping Tan, Qian Zhu, Yunxiao
Editor	Redondo, Beatriz
Copyright Year	2023
Abstract	PurposeTo investigate the diurnal variation in subfoveal choroidal thickness (SFCT) during the waking period over three consecutive days in different degrees of myopia and emmetropia.MethodsA total of 60 adult volunteers were grouped into low, moderate, high myopia, and emmetropia subgroups. SFCT, axial length (AL), anterior chamber depth (ACD), and intraocular pressure (IOP) were measured every 2 h from 8 AM to 8 PM for three successive days.ResultsThe mean values of daily change amplitude were 3.18 mmHg (IOP), 0.05 mm (AL), 0.17 mm (ACD), and 13.51 μm (SFCT). The values of AL and ACD increased simultaneously with spherical equivalent refraction (SER), but SFCT was the opposite. IOP had a diurnal variation, and there was no difference among the four groups. AL of the high myopia group, ACD of the emmetropia group, and SFCT of each myopia group had diurnal variation over three consecutive days. AL had a high mean value at noon every day, and SFCT had a low mean value at noon every day.ConclusionThe choroid thickness of subjects with different degrees of myopia had a significant diurnal variation. The change of diurnal variation between emmetropic and myopic subjects may be one of the causes of myopia.
Journal	Peerj
Volume Number	11
PubMed Central reference number	PMC10164371
PubMed reference number	37163153
e-ISSN	21678359
DOI	10.7717/peerj.15317
Language	English
Publisher	PeerJ Inc.
Publisher Date	2023-05-04
Publisher Place	San Diego, USA
Access Restriction	Open
Rights License	This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. © 2023 Jiang et al.
Subject Keyword	Diurnal variation Choroidal thickness Myopia Emmetropia
Content Type	Text
Resource Type	Article
Subject	Neuroscience Medicine Agricultural and Biological Sciences Biochemistry, Genetics and Molecular Biology

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