Evidence map›Paper›PMID 27143849›Full record

ReviewClinical ophthalmology (Auckland, N.Z.)2016

Ectasia risk factors in refractive surgery.

Marcony R Santhiago, Natalia T Giacomin, David Smadja, Samir J Bechara

Registry-linked trialOpen access · goldAbstract readReview
In one paragraph

Review in Clinical ophthalmology (Auckland, N.Z.), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03708575 (Risk Assessment for Corneal Ectasia Following Laser in Situ Keratomileusis), which is not on this map. Cited by 62 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 1 pooled it
10.0field-weighted citation impact, top 1% 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.

NCT03708575 unknown statusnot on this mapstarted 2018, after this paper: background citation

Risk Assessment for Corneal Ectasia Following Laser in Situ Keratomileusis

TypeobservationalSponsorAssiut UniversityRan2018 to 2020Enrolled25ConditionsCorneal Ectasia
3 · Its place in the literature

Who cites it

62 citing papers in PubMed, 1 synthesis or guideline pooled it, 142 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Unraveling the impact of laser refractive surgery on corneal ectasia: anFrontiers in bioengineering and biotechnology · 2025
    Article
  14. Article
  15. Article
  16. Factors associated with changes in posterior corneal surface following laser-assisted in situ keratomileusis.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Article
  17. Transepithelial Photorefractive Keratectomy-Review.Vision (Basel, Switzerland) · 2024
    Review
  18. Review
  19. Article
  20. Article

2 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 2 countries.

Marcony R SanthiagoDepartment of Ophthalmology, Federal University of São Paulo, São Paulo, Brazil.
Natalia T GiacominDepartment of Ophthalmology, Federal University of São Paulo, São Paulo, Brazil.
David SmadjaOphthalmology Department, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
Samir J BecharaDepartment of Ophthalmology, Federal University of São Paulo, São Paulo, Brazil.
Universidade Federal de São Paulo · BRTel Aviv Sourasky Medical Center · IL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This review outlines risk factors of post-laser in situ keratomileusis (LASIK) ectasia that can be detected preoperatively and presents a new metric to be considered in the detection of ectasia risk. Relevant factors in refractive surgery screening include the analysis of intrinsic biomechanical properties (information obtained from corneal topography/tomography and patient's age), as well as the analysis of alterable biomechanical properties (information obtained from the amount of tissue altered by surgery and the remaining load-bearing tissue). Corneal topography patterns of placido disk seem to play a pivotal role as a surrogate of corneal strength, and abnormal corneal topography remains to be the most important identifiable risk factor for ectasia. Information derived from tomography, such as pachymetric and epithelial maps as well as computational strategies, to help in the detection of keratoconus is additional and relevant. High percentage of tissue altered (PTA) is the most robust risk factor for ectasia after LASIK in patients with normal preoperative corneal topography. Compared to specific residual stromal bed (RSB) or central corneal thickness values, percentage of tissue altered likely provides a more individualized measure of biomechanical alteration because it considers the relationship between thickness, tissue altered through ablation and flap creation, and ultimate RSB thickness. Other recognized risk factors include low RSB, thin cornea, and high myopia. Age is also a very important risk factor and still remains as one of the most overlooked ones. A comprehensive screening approach with the Ectasia Risk Score System, which evaluates multiple risk factors simultaneously, is also a helpful tool in the screening strategy.

Indexed as

ectasiaPTArefractive surgeryrisk factor

Identifiers

PMID27143849
PMCPMC4844427
OpenAlexW2337968695

What OpenQuestion holds

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LicenceCC BY-NC
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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.