Evidence map›Paper›PMID 32832970›Full record

ArticleInvestigative ophthalmology & visual science2020

Effects of Narrowband Light on Choroidal Thickness and the Pupil.

Linjiang Lou, Lisa A Ostrin

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05852782 (Effects of Narrowband and Broadband Light on Choroidal Thickness and Melanopsin-driven Pupil Response), which is not on this map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
4.1field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

NCT05852782 nacompletednot on this map

Effects of Narrowband and Broadband Light on Choroidal Thickness and Melanopsin-driven Pupil Response

TypeinterventionalSponsorUniversity of HoustonRan2019 to 2020Enrolled20ConditionsEmmetropia, MyopiaArmsWhite Light therapy, Blue light therapy, Red light therapy, Darkness
3 · Its place in the literature

Who cites it

38 citing papers in PubMed, 54 citations in OpenAlex.

  1. The Effect of Light Intensity and the Timing of Light Exposure on Choroidal Thickness.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Trial
  2. Mesopic Illumination in Natural Environments: Implications for Myopia Research.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Article
  3. Review
  4. Article
  5. Interaction Between Near Work and Narrowband Light on Choroidal Thickness.Investigative ophthalmology & visual science · 2026
    Article
  6. Review
  7. Article
  8. Influence of time-of-day and light wavelengths on ocular responses to defocus.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2025
    Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Short-Term Myopic Defocus and Choroidal Thickness in Children and Adults.Investigative ophthalmology & visual science · 2024
    Article
  18. Article
  19. The outdoor environment affects retinal and choroidal thickness.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2023
    Article
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Linjiang Lou
Lisa A OstrinUniversity of Houston College of Optometry, Houston, TX 77096, United States.
University of Houston · US

Funding

Research Programming ModuleP30EY007551 · NEI · UNIVERSITY OF HOUSTON · PI LAURA J. FRISHMAN · 1988 to 2026
$16.4M
Light, near work, and ocular remodeling and during emmetropization and myopia development in childrenR01EY030193 · NEI · UNIVERSITY OF HOUSTON · PI Lisa A Ostrin, Jason Porter · 2019 to 2026
$2.7M
NEI NIH HHS P30 EY007551NEI NIH HHS R01 EY030193
6 · The paper itself

Abstract

Purpose: To determine the effects of narrowband light exposure on choroidal thickness and the pupil response in humans. Methods: Twenty subjects, ages 21 to 43 years, underwent 1 hour of exposure to broadband, short wavelength "blue," or long wavelength "red" light, or darkness. Choroidal thickness, imaged with spectral domain optical coherence tomography, axial length, determined from biometry, and rod/cone- and intrinsically photosensitive retinal ganglion cell-driven pupil responses were measured before and after exposure. Pupil stimuli were six 1 second alternating red (651 nm) and blue (456 nm) stimuli, 60 seconds apart. Pupil metrics included maximum constriction and the 6 second post-illumination pupil response (PIPR). Results: Compared with before exposure, the choroid significantly thinned after broadband light, red light, and dark exposure (all P < 0.05), but not after blue light exposure (P = 0.39). The maximum constriction to 1 second red stimuli significantly decreased after all light exposures (all P < 0.001), but increased after dark exposure (P = 0.02), compared with before exposure. Maximum constriction and 6-second PIPR to 1 second blue stimuli significantly decreased after all light exposures compared with before exposure (all P < 0.005), with no change after dark exposure (P > 0.05). There were no differences in axial length change or 6-second PIPR to red stimuli between exposures. Conclusions: Narrowband blue and red light exposure induced differential changes in choroidal thickness. Maximum constriction, a function of rod/cone activity, and the intrinsically photosensitive retinal ganglion cell-mediated PIPR were attenuated after all light exposures. Findings demonstrate differing effects of short-term narrowband light and dark exposure on the choroid, rod/cone activity, and intrinsically photosensitive retinal ganglion cells.

Indexed as

AdultChoroidFemaleHumansLightMalePhotic StimulationPupilReflex, PupillaryRetinal Ganglion CellsTomography, Optical CoherenceYoung Adult

Identifiers

PMID32832970
PMCPMC7452857
OpenAlexW3044042648

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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 OpenQuestion graph.