In the grading of trachoma, trachomatous inflammation–follicular is defined as the presence of –
Under WHO classification, trachocomatous inflammation follicular is defined as at least 5 or more follicles of at least 0.5 mm diameter on upper tarsal conjunctiva (for details see the table of WHO classification in the text of this chapter).
5 or more follicles in the lower tarsal conunctiva
3 or more follicles in the lower tarsal conjunctiva
5 or more follicles in the upper tarsal conjunctiva
3 or more follicles in the upper tarsal conjunctiva