Evidence map›Paper›PMID 33016984›Full record

ArticleInvestigative ophthalmology & visual science2020

Form-Deprivation and Lens-Induced Myopia Are Similarly Affected by Pharmacological Manipulation of the Dopaminergic System in Chicks.

Kate Thomson, Cindy Karouta, Regan Ashby

Open 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. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 pooled it
3.8field-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.

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

29 citing papers in PubMed, 2 syntheses or guidelines pooled it, 46 citations in OpenAlex.

  1. Pooled it
  2. 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
  3. Review
  4. Article
  5. Article
  6. Modulation of All-Trans Retinoic Acid by Light and Dopamine in the Murine Eye.Investigative ophthalmology & visual science · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Administration of Nicotine Can Inhibit Myopic Growth in Animal Models.Investigative ophthalmology & visual science · 2024
    Article
  11. Article
  12. Article
  13. Article
  14. The Role of Retinal Dysfunction in Myopia Development.Cellular and molecular neurobiology · 2023
    Review
  15. Article
  16. Article
  17. Studies on the interactions of retinal dopamine with choroidal thickness in the chicken.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023
    Article
  18. Mice LackingInternational journal of molecular sciences · 2022
    Article
  19. Article
  20. Effects of air pollution on myopia: an update on clinical evidence and biological mechanisms.Environmental science and pollution research international · 2022
    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

3 authors at 1 institution in 1 country.

Kate ThomsonCentre for Research in Therapeutic Solutions, Faculty of Science and Technology, University of Canberra, Canberra, Australia.
Cindy KaroutaCentre for Research in Therapeutic Solutions, Faculty of Science and Technology, University of Canberra, Canberra, Australia.
Regan AshbyCentre for Research in Therapeutic Solutions, Faculty of Science and Technology, University of Canberra, Canberra, Australia.
University of Canberra · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Purpose: Animal models have demonstrated a link between decreases in retinal dopamine levels and the development of form-deprivation myopia (FDM). However, the consistency of dopamine's role in the other major form of experimental myopia, that of lens-induced myopia (LIM), is less clear, raising the question as to what extent dopamine plays a role in human myopia. Therefore, to better define the role of dopamine in both forms of experimental myopia, we examined how consistent the protection afforded by dopamine and the dopamine agonist 6-amino-5,6,7,8-tetrahydronaphthalene-2,3-diol hydrobromide (ADTN) is between FDM and LIM. Methods: Intravitreal injections of dopamine (0.002, 0.015, 0.150, 1.500 µmol) or ADTN (0.001, 0.010, 0.100, 1.000 µmol) were administered daily to chicks developing FDM or LIM. Axial length and refraction were measured following 4 days of treatment. To determine the receptor subtype by which dopamine and ADTN inhibit FDM and LIM, both compounds were coadministered with either the dopamine D2-like antagonist spiperone (0.005 µmol) or the D1-like antagonist SCH-23390 (0.005 µmol). Results: Intravitreal administration of dopamine or ADTN inhibited the development of FDM (ED50 = 0.003 µmol and ED50 = 0.011 µmol, respectively) and LIM (ED50 = 0.002 µmol and ED50 = 0.010 µmol, respectively) in a dose-dependent manner, with a similar degree of protection observed in both paradigms (P = 0.471 and P = 0.969, respectively). Coadministration with spiperone, but not SCH-23390, inhibited the protective effects of dopamine and ADTN against the development of both FDM (P = 0.214 and P = 0.138, respectively) and LIM (P = 0.116 and P = 0.100, respectively). Conclusions: pharmacological targeting of the retinal dopamine system inhibits FDM and LIM in a similar dose-dependent manner through a D2-like mechanism.

Indexed as

Sensory DeprivationAnimalsAxial Length, EyeChickensContact LensesDisease Models, AnimalDopamineDopamine AgonistsDopamine AntagonistsDose-Response Relationship, DrugForm PerceptionIntravitreal InjectionsMaleMyopiaRefraction, OcularRetinaDopamineDopamine AgonistsDopamine Antagonists

Identifiers

PMID33016984
PMCPMC7545069
OpenAlexW3090144992

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.