Efficacy of blue-light blocking glasses on actigraphic sleep outcomes: a systematic review and meta-analysis of randomized controlled crossover trials.

ABSTRACT:

Background

Evening exposure to blue light suppresses melatonin, delays circadian phase, and prolongs sleep onset latency, impairing sleep quality. Blue-light blocking glasses (BBGs) are proposed as a non-pharmacological strategy to mitigate these effects, but trial evidence remains inconsistent due to small samples and heterogeneous protocols.

Objective

To evaluate the efficacy of BBGs in improving objective sleep outcomes sleep onset latency (SOL), total sleep time (TST), sleep efficiency (SE), and wake after sleep onset (WASO) compared to clear lenses or no intervention in adults.

Methods

A systematic search of PubMed, Scopus, and Web of Science identified randomized controlled trials (RCTs) from 2010 to 2024. Eligible studies enrolled adults using BBGs before bedti

SUBMITTER: Luna-Rangel FA 

PROVIDER: S-EPMC12668929 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature