Fig 1.
Natural history of trachoma: Normal healthy tarsal conjunctiva without inflammation, follicular trachoma (TF), intense inflammatory trachoma (TI), scarring trachoma (TS), trichiasis (TT) and corneal opacification (CO).
Ct: Chlamydia trachomatis.
Table 1.
Progression from active to scarring trachoma.
Table 2.
Progression of scarring trachoma.
Table 3.
Progression to trachomatous trichiasis.
Table 4.
Progression of trachomatous trichiasis.
Table 5.
Progression to corneal opacification, visual impairment and blindness.