Long term outcome of the two most commonly used surgical procedures to treat trachomatous trichiasis (TT): PLTR vs BLTR

Ascertain whether the difference in outcome (measured in rate of post-operative trachomatous trichiasis, or TT), between the posterior lamellar tarsal rotation (PLTR) and bilamellar tarsal rotation (BLTR) is sustained at four years or whether they give different results from what has been found at 1 year.

Notes

Sample: 1000 trichiasis cases enrolled into a clinical trial and received surgical management. 200 age, sex and location matched (to every fifth trichiasis cases enrolled into the trial) “healthy controls” without TT which were enrolled in a case-control study nested within the trial at baseline

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