Evidence map›Paper›PMID 33772698›Full record

ArticleInternational ophthalmology2021

Outcomes and complications of implantable collamer lens for mild to advance keratoconus.

Rafah Fairaq, Mohammed Almutlak, Enmar Almazyad, Abdulrahman H Badawi, Muhammad Ali Ahad

Abstract read
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In one paragraph

Article in International ophthalmology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
2.1field-weighted citation impact, top 13% 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

11 citing papers in PubMed, 20 citations in OpenAlex.

  1. Review
  2. Article
  3. Review
  4. Article
  5. Article
  6. Keratoconus: imaging modalities and management.Medical hypothesis, discovery & innovation ophthalmology journal · 2024
    Review
  7. Article
  8. Article
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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

5 authors at 1 institution in 1 country.

Rafah FairaqOphthalmology Department, Faculty of Medicine, University of Jeddah, Jeddah, Saudi Arabia.
Mohammed AlmutlakCornea and Anterior Segment Division, King Khaled Eye Specialist Hospital, Umm AlHamam AlGharbi, AlUrubah road, Riyadh, Saudi Arabia.
Enmar AlmazyadCornea and Anterior Segment Division, King Khaled Eye Specialist Hospital, Umm AlHamam AlGharbi, AlUrubah road, Riyadh, Saudi Arabia.
Abdulrahman H BadawiCornea and Anterior Segment Division, King Khaled Eye Specialist Hospital, Umm AlHamam AlGharbi, AlUrubah road, Riyadh, Saudi Arabia.
Muhammad Ali AhadCornea and Anterior Segment Division, King Khaled Eye Specialist Hospital, Umm AlHamam AlGharbi, AlUrubah road, Riyadh, Saudi Arabia. mahad@kkesh.med.sa.ORCID http://orcid.org/0000-0002-8050-2953
King Khaled Eye Specialist Hospital · SA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the outcome and safety of implantable collamer lens (ICL; (Visian, STAAR Surgical, Monrovia, CA, USA) in mild to advance keratoconus patients with myopia and myopic astigmatism.

methodsThis retrospective study evaluated all patients who underwent ICL implantation for the management of keratoconus at a tertiary care eye hospital from January 2012 to January 2018. The mean duration of follow-up was 15.3 months (range, 3.13 to 38.97 months). Data were collected on preoperative and postoperative uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA), refraction was compared, and adverse effects were evaluated.

resultsThirty-two eyes (32 patients) were evaluated. The median CDVA was 20/30 preoperatively and 20/20 at last follow-up. The median UDVA was 20/25 at last follow-up. Thirteen patients (40.6%) had 20/20 UDVA in comparison to none at baseline. The median spherical equivalent in diopters (D) was -7.875 D (-4.125 to -10.0 D) preoperatively and decreased to -0.3125 D at last follow-up. The median manifest refractive cylinder was 3.00 D (2.25 to 5.25 D) preoperatively and decreased to 1.125 D postoperatively. Cylinder axis rotation of 10° or greater occurred in 3 eyes (9.375%) and required repositioning of the ICL. One patient (3%) developed nonvisually significant anterior subcapsular cataract. One ICL (3.125%) had to be explanted due to residual refractive error and unsatisfactory vision.

conclusionICLs are a suitable refractive option for the correction of refractive error associated with stable, nonprogressive keratoconus even in advance cases. However, the risk of ICL rotation and subsequent repositioning remain. Careful patient selection is necessary for achieving good outcomes and mitigating intraoperative and postoperative complications.

Indexed as

AstigmatismKeratoconusPhakic Intraocular LensesHumansLens Implantation, IntraocularRefraction, OcularRetrospective StudiesTreatment OutcomeCorneal ectasiaIOLKeratoconusPhakic intraocular lensesToric implantable collamer lens

Identifiers

PMID33772698
OpenAlexW3144491919

What OpenQuestion holds

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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.