Trachoma is classified as a Class C infectious disease by national regulations. Trachoma generally manifests as red eyes, swollen eyes, eye pain, increased secretions, and a foreign body sensation, sometimes affecting vision.

The conjunctiva in trachoma shows significant proliferative follicles, or pavement stone-like changes. The transmission of trachoma is mainly through contact. Additionally, it is categorized as a Type C infectious disease, with infectious diseases classified into three major categories: Type A, Type B, and Type C. After contracting trachoma, it is crucial to actively treat it with eye drops and to pay attention to eye hygiene.