Evidence map›Paper›PMID 33154614›Full record

ArticleClinical ophthalmology (Auckland, N.Z.)2020

Initial Single-Site Experience Using SMILE for the Treatment of Astigmatism in Myopic Eyes and Comparison of Astigmatic Outcomes with Existing Literature.

Majid Moshirfar, Andrew C Thomson, William B West, MacGregor N Hall, Shannon E McCabe, Robert J Thomson, Yasmyne C Ronquillo, Phillip C Hoopes

Registry-linked trialOpen access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Clinical ophthalmology (Auckland, N.Z.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05017376 (Evaluating the Effect of Optical Zones on Myopia and Astigmatism Correction in SMILE), which is not on this map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.6field-weighted citation impact, top 29% 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.

NCT05017376 completednot on this map

Evaluating the Effect of Optical Zones on Myopia and Astigmatism Correction in SMILE: Vector Analysis

TypeobservationalSponsorTianjin Eye HospitalRan2020 to 2021Enrolled140ConditionsMyopiaArmssmall incision lenticular extraction
3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 9 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Impact of the preoperative cylinder on astigmatism correction in femtosecond lenticule extraction (FLEX): a prospective observational study.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2024
    Observational
  5. 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

8 authors at 3 institutions in 1 country.

Majid MoshirfarHoopes Vision Research Center, Hoopes Vision, Draper, UT, USA.ORCID 0000-0003-1024-6250
Andrew C ThomsonMcGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, USA.ORCID 0000-0003-1936-240X
William B WestUniversity of Utah School of Medicine, Salt Lake City, UT, USA.
MacGregor N HallMcGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, USA.
Shannon E McCabeHoopes Vision Research Center, Hoopes Vision, Draper, UT, USA.ORCID 0000-0002-6339-3628
Robert J ThomsonMcGovern Medical School at the University of Texas Health Science Center at Houston, Houston, TX, USA.
Yasmyne C RonquilloHoopes Vision Research Center, Hoopes Vision, Draper, UT, USA.ORCID 0000-0002-8852-4380
Phillip C HoopesHoopes Vision Research Center, Hoopes Vision, Draper, UT, USA.
Hoopes Vision · USThe University of Texas Health Science Center at Houston · USUniversity of Utah · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo assess a single site's initial experience with SMILE for the treatment of myopic astigmatism and compare outcomes and vector analysis results with the US Food and Drug Administration (FDA) results and published literature. PATIENTS AND

methodsForty-eight eyes (29 patients) with mean preoperative sphere of -5.11 ± 1.31 diopters (D) and cylinder of -1.12 ± 0.60 D underwent SMILE. Visual acuity, refractive, and vector analysis outcomes as well as subjective measures were reported at three and twelve months postoperatively and compared with FDA results and the published literature between 2014 and 2020 involving treatment of patients with mean cylinders of >-0.50 to ≤-3.00 D.

resultsAt three and twelve months, 43 and 32 eyes were evaluated, respectively. At twelve months, mean cylinder power was reduced to -0.38 ± 0.38 D with 78.1% achieving ≤±0.50 D. Uncorrected distance visual acuity (UDVA) ≥20/20 was achieved in 77.4% of eyes by twelve months with 100% achieving ≥20/30 UDVA. No loss of corrected distance visual acuity was observed in eyes seen at twelve months. Correction index (CI) at twelve months was 0.90 indicating overall undercorrection of 10%. Twelve-month CI was 0.96, 0.90, and 0.83 in eyes with preoperative cylinders of <-1.00 D, ≥-1.00 to <-2.00 D, and ≥-2.00 D, respectively. Mean angle of error was -1.58 ± 11.61° ranging from -24.22° to 37.75°.

conclusionWe found SMILE to be an effective and safe means of achieving spectacle independence and improving visual acuity in patients with myopic astigmatism. SMILE has the potential for improved clinical outcomes with better nomogram guidance and advancements in technique. However, surgeons must be aware of the potential for undercorrection in with-the-rule astigmatism and at higher preoperative cylinders and as well as the potential for overcorrection in against-the-rule and lower preoperative cylinder astigmatism.

Indexed as

astigmatismmyopiaReLExSMILEtoricvector analysis

Identifiers

PMID33154614
PMCPMC7607143
OpenAlexW3095529489

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.