Randomized controlled trial2025

Safety of and chorioretinal circulation during repeated low-level red-light therapy for myopic children

Jiang Z, Chen S, Wang R, Ma J

Clinical & experimental ophthalmology · 8 citations

How it was studied

Design
Randomized controlled trial (indexed by PubMed)
Studied in
People
Main outcome
Health markers and function

Who paid for it

Funding
Independent funding
Government
Natural Science Foundation of Guangdong Province
Government
National Key Research and Development Program of China
Government
Guangdong Natural Science Foundation
Grants
National Key Research and Development Program of China (2023YFC2506100); Natural Science Foundation of Guangdong Province (2023A1515012470)

Based on 3 listed funder(s).

Publication

Published
2024-11-05 · Clin Exp Ophthalmol · vol. 53 · issue 2 · pp. 119–132
Publisher
Wiley
Cited
11 citations · more than 95% of similar papers · 4.1× the field average
Impact
Top 10% most cited in its field
References
26 works
Access
Free to read
Research areas
Retinal Diseases and Treatments · Laser Applications in Dentistry and Medicine · Retinopathy of Prematurity Studies
Keywords
Medicine, Microperimetry, Ophthalmology, Retinal, Refractive error, Emmetropia, Fundus (uterus), Visual acuity
MeSH
microcirculation, retinal vessels, choroid, humans, myopia, tomography, optical coherence, fluorescein angiography, electroretinography, phototherapy, single-blind method, eyeglasses, regional blood flow, visual acuity, adolescent, child, female, male, axial length, eye

4 authors

From CN

  • Zhaoxin JiangSun Yat-sen University
  • Shuyu ChenSun Yat-sen University
  • Renchun WangSun Yat-sen University
  • Jin Ma · correspondingSun Yat-sen University

Abstract

Background

To evaluate the safety of repeated low-level red-light (RLRL) therapy in children, and the dynamic evolution of choroidal and retinal blood flow.

Methods

This is a single-centre, randomised, single-blind, parallel-group clinical trial. Seventy myopic children were randomly assigned to either the intervention group [receiving RLRL therapy plus single-vision spectacle (SVS)] or the control group (wearing SVS). Participants underwent comprehensive ophthalmic examinations following their first irradiation, 9 months continuous RLRL therapy and stop of treatment. Quantitative analyses of choroidal and retinal microcirculation were analysed via optical coherence tomography angiography.

Results

Over 9 months of treatment, while the RLRL treatment demonstrated significantly less increases in refractive error and axial length compared with the SVS treatment (ps 0.05). A single red-light exposure did not exert a significant influence on choroidal thickness (ps > 0.05). Upon continuous treatment, the RLRL group achieved peak values in these circulations at 9 months (ps 0.05). As the frequency of red-light exposures intensified, there was a consistent surge in these circulations (ps < 0.05).

Conclusions

Nine months of continuous RLRL exposure does not cause toxic side effects on retinal or optic nerve functions, and there is a time-dependent cumulative response in choroidal and retinal circulation.

Abstract via Europe PMC. Copyright remains with the authors or publisher.

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