**8. Trachoma**

**Clinic:** The incubation period of trachoma is 3–10 days. It is a chronic disease that starts in early childhood and progresses insidiously. *Chlamydia trachomatis* serovars A, B, Ba, and C are associated with trachoma. It often accompanies a bacterial conjunctivitis and composes the clinical picture together. Trachoma is chronic keratoconjunctivitis involving the conjunctiva and cornea. At the onset of the disease, lacrimation, mucopurulent discharge, and conjunctival redness are the first findings [11]. It is characterized by advanced ocular signs of trachoma, lymphocyte infiltration in the corneal epithelium, granulations in the conjunctiva, eyelid deformities, and complications that progress to blindness [2].
