The effect of central and peripheral luminance on visual acuity.
Journal
Indian journal of ophthalmology
ISSN: 1998-3689
Titre abrégé: Indian J Ophthalmol
Pays: India
ID NLM: 0405376
Informations de publication
Date de publication:
01 Nov 2024
01 Nov 2024
Historique:
received:
21
12
2023
accepted:
23
08
2024
medline:
25
10
2024
pubmed:
25
10
2024
entrez:
25
10
2024
Statut:
ppublish
Résumé
Lighting conditions significantly influence visual acuity (VA), visual function, and quality of life. Previous research highlighted a correlation between luminance and VA but left a gap in understanding the impact of surrounding luminance. This study focused on investigating the effects of both central and peripheral luminance on VA. This study aimed to investigate the influence of both central and surrounding luminance on VA through distance VA measurements. A dual-component lighting system was utilized, comprising a self-illuminated ETDRS chart and a skyLED system for consistent surrounding illumination. Two experimental setups were conducted: the first varied the central luminance (25 ± 2-341 ± 10 cd/m²), while the second maintained a constant central luminance (150 ± 5 cd/m²) and varied the surrounding luminance (4 ± 2 cd/m² OFF-105 ± 10 cd/m² ON). Sixty-six participants with refractive errors between 0.0 D and -2.75 D were tested under various lighting conditions. Both uncorrected refractive error (URE) and corrected refractive error (CRE) eyes were evaluated. Paired t-tests were used to evaluate the statistical significance of differences in VA scores. Experiment 1 demonstrated a significant increase in VA scores, with mean improvements of -0.120 LogMAR for URE eyes and -0.073 LogMAR for CRE eyes as chart luminance increased from 26 cd/m² to 153 cd/m². Experiment 2 further showed a notable improvement in VA scores under varied surrounding luminance conditions, with mean improvements of - 0.118 LogMAR for URE eyes and -0.073 LogMAR for CRE eyes as luminance increased from 4 cd/m² to 102 cd/m². This study emphasizes the significant impact of both central and peripheral luminance on VA. The introduction of the skyLED lighting system underlines the importance of optimal lighting for visual performance.
Identifiants
pubmed: 39449530
doi: 10.4103/IJO.IJO_3318_23
pii: 02223307-202411005-00025
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
S875-S881Informations de copyright
Copyright © 2024 Copyright: © 2024 Indian Journal of Ophthalmology.
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