Zhang 2006.

Methods	Design: parallel group randomised trial of peri‐operative azithromycin treatment. Eyes: bilateral cases both eyes included.
Participants	Country: Nepal Setting: field camps Number of participants: 109 (148 eyes operated) Lost to follow‐up: uncertain, as reported by eye rather than person Male: 29, Female: 80
Interventions	(1) Bilamellar tarsal rotation with placebo (2) Bilamellar tarsal rotation with azithromycin, single dose
Outcomes	Primary outcome: recurrent trichiasis (1+ lash touching the eye)
Notes	Funder: Fight for Sight, International Trachoma Initiative, National Institutes of Health.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	High risk	No random sequence. Patients allocated to azithromycin and placebo on an alternating basis.
Allocation concealment (selection bias)	High risk	No concealment.
Blinding of participants and personnel (performance bias) All outcomes	Low risk	Placebo used.
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Examinations by masked graders.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Some minor internal inconsistencies data.
Selective reporting (reporting bias)	High risk	Excluded "surgical failures" from the analysis, defined as five+ lashes touching the globe at 3 months.

TT = trachomatous trichiasis