Evidence map›Paper›PMID 27750284›Full record

ArticleInvestigative ophthalmology & visual science2016

Altered Refractive Development in Mice With Reduced Levels of Retinal Dopamine.

Michael A Bergen, Han Na Park, Ranjay Chakraborty, Erica G Landis, Curran Sidhu, Li He, P Michael Iuvone, Machelle T Pardue

Open access · goldAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 9% 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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

  1. Dynamic changes in ocular shape during human development and its implications for retina fovea formation.BioEssays : news and reviews in molecular, cellular and developmental biology · 2024
    Pooled it
  2. Trial
  3. Scleral Postn Drives Myopia via Promoting Myofibroblast Transdifferentiation.Investigative ophthalmology & visual science · 2026
    Article
  4. Review
  5. Article
  6. HarnessingGut microbes · 2025
    Article
  7. Article
  8. Article
  9. Modulation of All-Trans Retinoic Acid by Light and Dopamine in the Murine Eye.Investigative ophthalmology & visual science · 2025
    Article
  10. Article
  11. Insights into Myopia from Mouse Models.Annual review of vision science · 2024
    Review
  12. Article
  13. Circadian rhythm, ipRGCs, and dopamine signalling in myopia.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Review
  14. Article
  15. Article
  16. Review
  17. Article
  18. Altered Structure and Function of Murine Sclera in Form-Deprivation Myopia.Investigative ophthalmology & visual science · 2022
    Article
  19. Article
  20. Article
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

8 authors at 2 institutions in 1 country.

Michael A BergenCenter for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, Decatur, Georgia, United States 2Biology, Emory University, Atlanta, Georgia, United States.
Han Na ParkOphthalmology, Emory University School of Medicine, Atlanta, Georgia, United States.
Ranjay ChakrabortyCenter for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, Decatur, Georgia, United States 3Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, United States.
Erica G LandisCenter for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, Decatur, Georgia, United States 4Neuroscience, Emory University School of Medicine, Atlanta, Georgia, United States.
Curran SidhuOphthalmology, Emory University School of Medicine, Atlanta, Georgia, United States.
Li HeOphthalmology, Emory University School of Medicine, Atlanta, Georgia, United States.
P Michael IuvoneOphthalmology, Emory University School of Medicine, Atlanta, Georgia, United States 4Neuroscience, Emory University School of Medicine, Atlanta, Georgia, United States 5Pharmacology, Emory University School of Medicine, Atlanta, Georgia, United States.
Machelle T PardueCenter for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, Decatur, Georgia, United States 3Ophthalmology, Emory University School of Medicine, Atlanta, Georgia, United States 4Neuroscience, Emory University School of Medicine, Atlanta, Georgia, United States.
Emory University · USAtlanta VA Medical Center · US

Funding

P30-Core Grant for Vision Research Core CP30EY006360 · NEI · EMORY UNIVERSITY · PI BOATRIGHT, JEFFREY H · 1986 to 2025
$15.3M
Neuromodulators and Circadian Clocks: Roles in Retinal Function and DysfunctionR01EY004864 · NEI · EMORY UNIVERSITY · PI IUVONE, P MICHAEL · 1985 to 2018
$7.0M
Retinal Mechanisms of Refractive DevelopmentR01EY016435 · NEI · GEORGIA INSTITUTE OF TECHNOLOGY · PI Machelle T. Pardue · 2009 to 2026
$5.4M
VIsion Science Training in AtlantaT32EY007092 · NEI · EMORY UNIVERSITY · PI Machelle T. Pardue · 1985 to 2026
$4.6M
NEI NIH HHS P30 EY006360NEI NIH HHS R01 EY004864NEI NIH HHS R01 EY016435NEI NIH HHS T32 EY007092
6 · The paper itself

Abstract

purposeThe neuromodulator dopamine (DA) has been implicated in the prevention of excessive ocular elongation and myopia in various animal models. This study used retina-specific DA knockout mice to investigate the role of retinal DA in refractive development and susceptibility to experimental myopia.

methodsMeasurements of refractive error, corneal curvature, and ocular biometrics were obtained as a function of age for both untreated and form-deprived (FD) groups of retina-specific tyrosine hydroxylase knockout (rTHKO) and control (Ctrl) mice. Retinas from each group were analyzed by HPLC for levels of DA and its primary metabolite (DOPAC).

resultsUnder normal visual conditions, rTHKO mice showed significantly myopic refractions (F(1,188) = 7.602, P < 0.001) and steeper corneas (main effect of genotype F(1,180) = 5.1, P < 0.01) at 4 and 6 weeks of age compared with Ctrl mice. Retina-specific THKO mice also had thinner corneas (main effect of genotype F(1,181) = 37.17, P < 0.001), thinner retinas (F(6,181) = 6.07, P < 0.001), and shorter axial lengths (F(6,181) = 3.78, P < 0.01) than Ctrl mice. Retina-specific THKO retinas contained less than 15% of DA and DOPAC compared with Ctrl retinas, and the remaining DA had a significantly higher turnover, as indicated by DOPAC/DA ratios (Student's t-test, P < 0.05). Retina-specific THKO mice showed similar, yet more variable, responses to 6 weeks of FD compared with Ctrl mice.

conclusionsDiminished retinal DA induced spontaneous myopia in mice raised under laboratory conditions without form deprivation. The relative myopic shift in rTHKO mice may be explained by steeper corneas, an unexpected finding. The chronic loss of DA did not significantly alter the FD myopia response in rTHKO mice.

Indexed as

3,4-Dihydroxyphenylacetic AcidAgingAnimalsBiomarkersDisease Models, AnimalDisease ProgressionDopamineMiceMice, KnockoutMyopiaRefraction, OcularRetinaTomography, Optical Coherence3,4-Dihydroxyphenylacetic AcidBiomarkersDopamine

Identifiers

PMID27750284
PMCPMC5015967
OpenAlexW2517619760

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.