Trachoma is somewhat contagious. When it is confirmed as trachoma, the eyelids and the conjunctiva of the eyes will carry the bacterium due to Chlamydia infection. When patients touch their eyes with their hands, their fingers or palms are already carrying the bacteria, including Chlamydia. Therefore, when they come into contact with others, cross-infection can occur. Prevention of trachoma primarily involves avoiding contact infection, improving environmental hygiene, enhancing the sanitary management of service industries such as hotels, swimming pools, and barber shops, and developing good hygiene habits, including avoiding rubbing the eyes with hands.