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

Abstract：

IMPORTANCE:Trichiasis 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. OBJECTIVE:To determine whether the location of trichiatic eyelashes prior to surgery influences development of post-operative trichiasis (PTT) within two years after surgery. DESIGN:Secondary 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. SETTING:Primary 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. RESULTS:6,747 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 REGISTRATION:ClinicalTrials.gov PRET: NCT00886015; Suture: NCT005228560; Epilation: NCT00522912.

journal_name

PLoS Negl Trop Dis

journal_title

PLoS neglected tropical diseases

authors

Gower EW,Munoz B,Rajak S,Habtamu E,West SK,Merbs SL,Harding JC,Alemayehu W,Callahan EK,Emerson PM,Gebre T,Burton MJ

doi

10.1371/journal.pntd.0007637

subject

Has Abstract

pub_date

2019-10-07 00:00:00

pages

e0007637

issue

eissn

1935-2727

issn

1935-2735

pii

PNTD-D-19-00746

journal_volume

pub_type

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