Table 4

Progression rates of trichiasis and corneal opacity over 12 months

Proportion%95% Confidence interval
Minor trichiasis to major trichiasis (either eye)18/553321 to 47
Unilateral to bilateral trichiasis21/464631 to 61
Incident/progressive corneal scarring (any worsening of WHO grade,
Incidence of sight threatening corneal opacity (grades 0 or 1 at baseline and 2 or 3 at 12 months, either eye)10/104105 to 17