Evidence map›Paper›PMID 33221372›Full record

ReviewExperimental eye research2021

The biology of Acanthamoeba keratitis.

Jerry Y Niederkorn

Open access · greenAbstract readReview
In one paragraph

Review in Experimental eye research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
5.3field-weighted citation impact, top 4% 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

39 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
  2. Oxidative Stress and Redox Imbalance inInternational journal of molecular sciences · 2026
    Review
  3. Article
  4. Article
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  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Frontiers in ophthalmology · 2025
    Article
  16. Acanthamoeba keratitis: from pathophysiology to prevention, a contemporary clinical perspective.Medical hypothesis, discovery & innovation ophthalmology journal · 2025
    Review
  17. Article
  18. First report on the long-term viability ofJournal of water and health · 2024
    Article
  19. 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

1 author at 1 institution in 1 country.

Jerry Y NiederkornDepartment of Ophthalmology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX, 75390, USA. Electronic address: jerry.niederkorn@utsouthwestern.edu.
The University of Texas Southwestern Medical Center · US

Funding

Stem Cell, Organoid and Cell Phenotyping ModuleP30EY030413 · NEI · UT SOUTHWESTERN MEDICAL CENTER · PI W MATTHEW PETROLL · 2019 to 2026
$5.9M
NEI NIH HHS P30 EY030413
6 · The paper itself

Abstract

Acanthamoeba keratitis (AK) is a rare protozoal infection of the cornea. At least eight species of Acanthamoeba are known to cause this sight-threatening disease of the ocular surface. Acanthamoeba spp. exist in a wide array of niches ranging from thermal springs to under ice and every conceivable habitat in between. Contact lens wear is the leading risk factor for AK and is practiced by over 30 million individuals in the United States, yet the incidence of AK is less than 33 cases per one million contact lens wearers. Serological studies have reported that 90%-100% of individuals with no history of AK possess antibodies specific for Acanthamoeba antigens indicating that exposure to this organism is commonplace, yet disease is remarkably rare. Animal studies have shed light on the pathobiology and immunobiology of AK and indicate that a constellation of factors including the ocular surface microbiome and the microbiome of Acanthamoeba itself contribute to the pathogenesis of AK. Interesting, secretory antibodies produced by the adaptive immune response can prevent the initiation of corneal infection, but once Acanthamoeba trophozoites breach the corneal epithelium the adaptive immune system is helpless in altering the course of AK. It has been almost 50 years since AK was first described, yet many questions remain unanswered about this curious and enigmatic disease of the ocular surface.

Indexed as

AcanthamoebaAcanthamoeba KeratitisAnimalsAntibodies, ProtozoanContact LensesCorneaEye Infections, ParasiticHumansRisk FactorsAntibodies, ProtozoanAcanthamoebaContact lensCorneaImmunologyKeratitisMicrobiomePathology

Identifiers

PMID33221372
PMCPMC7856181
OpenAlexW3107028009

What OpenQuestion holds

Textmetadata
LicenceTDM
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.