Evidence map›Paper›PMID 40235101›Full record

SynthesisKorean journal of ophthalmology : KJO2025

Treatment of Pterygium on the Refractive Errors: A Systematic Review.

Nima Rastegar Rad

Abstract readSystematic Review
In one paragraph

Synthesis in Korean journal of ophthalmology : KJO, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
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

7 citing papers in PubMed.

  1. Observational
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Revealing the Association ofIn vivo (Athens, Greece)
    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

1 author.

Nima Rastegar RadDivision of Ophthalmology, Shahid Beheshti Clinic, Karaj, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePterygium is a chronic, degenerative condition of unknown cause, and its development can lead to significant refractive errors due to localized flattening of the cornea near the central area of the leading edge. However, to date, the impact of pterygium and its surgical removal on refractive errors has not been thoroughly compiled in a comprehensive study. This systematic review aims to evaluate the effect of pterygium surgery on refractive errors and to examine the relationship between the size of the pterygium and its effect on refractive errors both before and after pterygium surgery.

methodsThe Cochrane methodology was used to design and conduct the present systematic review. Relevant articles published up to December 2024 were searched and collected from four electronic databases: PubMed, Scopus, MEDLINE, and Web of Science. Additionally, a manual search was conducted to locate relevant studies. The keywords used in the search included "pterygium" combined with terms such as "refractive errors," "myopia," "hyperopia," "astigmatism," and "presbyopia."

resultsIn total, 23 studies including 1,663 eyes were included in this review. In the majority of studies, more than one technique was used, with conjunctival autograft being the most common technique for pterygium treatment. In most reviewed studies, a significant improvement in visual acuity, keratometry values-both horizontal keratometry (K1) and vertical keratometry (K2)-corneal astigmatism, corneal spherical power, surface regularity index, and surface asymmetry index, as well as a decrease in corneal astigmatism, spherical error, and wavefront aberration, were reported after pterygium excision.

conclusionsPterygium surgery can be effective in reducing refractive errors, including astigmatism, wavefront aberration, and spherical aberration, in various ways. However, this also depends on the size of the pterygium. The findings of this study suggest that early removal of pterygia reduces the likelihood of significant residual aberrations. Pterygia between 3 and 4 mm in size pose a notable risk for residual aberrations.

Indexed as

Ophthalmologic Surgical ProceduresPterygiumRefraction, OcularRefractive ErrorsVisual AcuityHumansAstigmatismCorneal topographyPterygiumRefractive errorsVisual acuity

Identifiers

PMID40235101
PMCPMC12178682

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Registered trials

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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.