Evidence map›Paper›PMID 31589610›Full record

Trial reportPLoS neglected tropical diseases2019

Pre-operative trichiatic eyelash pattern predicts post-operative trachomatous trichiasis.

Emily W Gower, Beatriz Munoz, Saul Rajak, Esmael Habtamu, Sheila K West, Shannath L Merbs, Jennifer C Harding, Wondu Alemayehu, E Kelly Callahan, Paul M Emerson and 2 more

2 registry-linked trialsOpen access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in PLoS neglected tropical diseases, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 8 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 2 pooled it
0.9field-weighted citation impact, top 27% 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.

NCT00522912 nacompletednot on this map

A Randomised Controlled Trial of Epilation Verses Immediate Surgery for the Management of Minor Trachomatous Trichiasis

TypeinterventionalSponsorLondon School of Hygiene and Tropical MedicineRan2008 to 2010Enrolled1,300ConditionsTrachomatous TrichiasisArmsTrichiasis surgery, Epilation
NCT00886015 nacompletednot on this map

Partnership for the Rapid Elimination of Trachoma (PRET) Clinical Trial of Evaluation of Modified Instrumentation for Surgery to Correct Trichiasis

TypeinterventionalSponsorJohns Hopkins UniversityRan2009 to 2012Enrolled1,927ConditionsTrachomaArmsTT Clamp, Standard BLTR Technique
3 · Its place in the literature

Who cites it

8 citing papers in PubMed, 2 syntheses or guidelines pooled it, 13 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Trachoma.Nature reviews. Disease primers · 2022
    Review
  7. Article
  8. 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

12 authors at 8 institutions in 3 countries.

Emily W GowerGillings School of Global Public Health, University of North Carolina at Chapel Hill, North Carolina, United States of America.ORCID 0000-0003-1016-9910
Beatriz MunozWilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America.
Saul RajakThe Sussex Eye Hospital, Brighton, United Kingdom.
Esmael HabtamuLondon School of Hygiene & Tropical Medicine, London, United Kingdom.
Sheila K WestWilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America.
Shannath L MerbsWilmer Eye Institute, Johns Hopkins School of Medicine, Baltimore, Maryland, United States of America.
Jennifer C HardingHelen Keller International, Dar es Salaam, Tanzania.
Wondu AlemayehuBerhan Public Health and Eye Care Consultancy, Addis Ababa, Ethiopia.
E Kelly CallahanThe Carter Center, Atlanta, Georgia, United States of America.
Paul M EmersonInternational Trachoma Initiative, Atlanta, Georgia, United States of America.
Teshome GebreInternational Trachoma Initiative, Addis Ababa, Ethiopia.
Matthew J BurtonLondon School of Hygiene & Tropical Medicine, London, United Kingdom.
Johns Hopkins University · USLondon School of Hygiene & Tropical Medicine · GBCarter Center · USEthiopian Public Health Association · ETInternational Trachoma Initiative · ETInternational Trachoma Initiative · USSussex Eye Hospital · GBUniversity of North Carolina at Chapel Hill · US

Funding

TRIAL OF ANTIBIOTICS TO REDUCE RECURRENT TRICHIASISU01EY013878 · NEI · JOHNS HOPKINS UNIVERSITY · PI WEST, SHEILA K · 2002 to 2005
$3.2M
Secondary Analysis of Four Trichiasis Surgery Clinical Trials to Inform ManagemenR21EY023303 · NEI · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI GOWER, EMILY W · 2013 to 2014
$427k
NEI NIH HHS R21 EY023303NEI NIH HHS U01 EY013878Wellcome Trust
6 · The paper itself

Abstract

importanceTrichiasis surgery programs globally have faced high rates of poor surgical outcomes. Identifying correctable risk factors for improving long-term outcomes is essential for countries targeting elimination of trachoma as a public health problem.

objectiveTo determine whether the location of trichiatic eyelashes prior to surgery influences development of post-operative trichiasis (PTT) within two years after surgery.

designSecondary data analysis of four randomized clinical trials evaluating methods to improve trichiasis surgery outcomes. These include the Surgery for Trichiasis, Antibiotics for Recurrence (STAR) trial, Partnership for Rapid Elimination of Trachoma (PRET-Surgery), absorbable versus silk sutures trial, and epilation versus surgery for minor trichiasis trial.

settingPrimary trials were conducted in rural areas of Ethiopia and Tanzania. INTERVENTIONS OR EXPOSURES: Trichiasis surgery performed with either the bilamellar tarsal rotation procedure or posterior lamellar rotation procedure. MAIN OUTCOMES: Prevalence of PTT within two years after surgery, location of trichiatic eyelashes pre-operatively and post-operatively.

results6,747 eyelids that underwent first-time trichiasis surgery were included. PTT rates varied by study, ranging from 10-40%. PTT was less severe (based on number of trichiatic eyelashes) than initial trichiasis for 72% of those developing PTT, and only 2% of eyelids were worse at follow up than pre-operatively. Eyelids with central only-trichiasis pre-operatively had lower rates of PTT than eyelids with peripheral only trichiasis in each of the three trials that included severe TT cases. 10% of eyelids with peripheral trichiasis pre-operatively that develop PTT have central TT post-operatively. CONCLUSIONS AND RELEVANCE: Pre-operative central trichiasis is less likely than peripheral trichiasis to be associated with subsequent PTT. Regardless of type of surgery, surgeon skill levels, or pre-operative trichiasis severity, the presence of peripheral trichiasis pre-operatively is associated with higher rates of PTT. Making an incision that extends the length of the eyelid and adequately rotating the nasal and temporal aspects of the eyelid when suturing may help to minimize the chance of developing peripheral PTT.

trial registrationClinicalTrials.gov PRET: NCT00886015; Suture: NCT005228560; Epilation: NCT00522912.

Indexed as

EyelashesAgedAnti-Bacterial AgentsEthiopiaEyelidsFemaleHair RemovalHumansMaleMiddle AgedPostoperative Cognitive ComplicationsPrevalenceRecurrenceRisk FactorsTanzaniaTrachomaAnti-Bacterial Agents

Identifiers

PMID31589610
PMCPMC6797216
OpenAlexW2978065844

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.