ArticleBMC public health2024
Protocol for a prospective, multicentre, cross-sectional cohort study to assess personal light exposure.
Article in BMC public health, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
16 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Ocular light and optical radiation exposure as a modifiable environmental determinant of health: expert consensus on research gaps and priorities.BMC medicine · 2026Guideline
- Annual Solar Cycles: Investigating Seasonal Variations in Southern Norway and Their Potential Role in Human Eye Growth.Investigative ophthalmology & visual science · 2026Article
- Evaluation of wearable light dosimeters for circadian lighting: spectral, spatial, photometric, melanopic, and thermal performance.Npj biological timing and sleep · 2026Article
- Light exposure and sleep architecture in real-world settings.Npj biological timing and sleep · 2026Article
- Associations between habitual light exposure-related behaviors and sleep timing and sleep complaints in an international community sample.Scientific reports · 2026Article
- Impact of wear position on dosimeter performance: a hybrid measurement-simulation approach to quantify in-situ factors.Npj biological timing and sleep · 2026Article
- Light Exposure as a Modifiable Determinant of Mental Health.Current psychiatry reports · 2026Review
- Auxiliary data, quality assurance and quality control for wearable light loggers and optical radiation dosimeters.Npj biological timing and sleep · 2026Article
- Collecting, detecting, and handling non-wear intervals in longitudinal light exposure data.Behavior research methods · 2026Article
- Relationships between light exposure and aspects of cognitive function in everyday life.Communications psychology · 2025Article
- How to Deal With Darkness: Modeling and Visualization of Zero-Inflated Personal Light Exposure Data on a Logarithmic Scale.Journal of biological rhythms · 2025Article
- LightLogR: Reproducible analysis of personal light exposure data.Journal of open source software · 2025Article
- Daily light exposure habits of youth with migraine: a prospective exploratory study.Npj biological timing and sleep · 2025Article
- Physiologically relevant real-world light exposure and its behavioural and environmental determinants in Kumasi, Ghana.Open research Europe · 2025Article
- Effect of Exposure to Blue Light from Electronic Devices and the Mediterranean Diet on Macular Pigment.Journal of clinical medicine · 2024Article
- Behavioural determinants of physiologically-relevant light exposure.Communications psychology · 2024Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
20 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Light profoundly impacts many aspects of human physiology and behaviour, including the synchronization of the circadian clock, the production of melatonin, and cognition. These effects of light, termed the non-visual effects of light, have been primarily investigated in laboratory settings, where light intensity, spectrum and timing can be carefully controlled to draw associations with physiological outcomes of interest. Recently, the increasing availability of wearable light loggers has opened the possibility of studying personal light exposure in free-living conditions where people engage in activities of daily living, yielding findings associating aspects of light exposure and health outcomes, supporting the importance of adequate light exposure at appropriate times for human health. However, comprehensive protocols capturing environmental (e.g., geographical location, season, climate, photoperiod) and individual factors (e.g., culture, personal habits, behaviour, commute type, profession) contributing to the measured light exposure are currently lacking. Here, we present a protocol that combines smartphone-based experience sampling (experience sampling implementing Karolinska Sleepiness Scale, KSS ratings) and high-quality light exposure data collection at three body sites (near-corneal plane between the two eyes mounted on spectacle, neck-worn pendant/badge, and wrist-worn watch-like design) to capture daily factors related to individuals' light exposure. We will implement the protocol in an international multi-centre study to investigate the environmental and socio-cultural factors influencing light exposure patterns in Germany, Ghana, Netherlands, Spain, Sweden, and Turkey (minimum n = 15, target n = 30 per site, minimum n = 90, target n = 180 across all sites). With the resulting dataset, lifestyle and context-specific factors that contribute to healthy light exposure will be identified. This information is essential in designing effective public health interventions.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.