Trachoma grading scheme
| Sign | Description |
|---|---|
| Follicular trachoma (TF) | Presence of 5+ follicles in the upper tarsal conjunctiva |
| Trachomatous inflammation—intense (TF) | Pronounced inflammatory thickening of the upper tarsal conjunctiva that obscures more than half of the normal deep tarsal vessels |
| Trachomatous scarring (TS) | Presence of scarring in the tarsal conjunctiva |
| Corneal opacity (CO) | (1) Corneal scarring that is so dense that at least part of the pupil margin is blurred when viewed through the opacity. (2) Scarring that covers the entire cornea |