What is catarrhal conjunctivitis?

Catarrhal conjunctivitis mainly refers to a hypersensitivity immune reaction to external substances, belonging to seasonal epidemic diseases.

Catarrhal conjunctivitis occurs in children and youth. When patients are sick, symptoms such as itching, conjunctival edema, sticky secretions, blurred vision, throat foreign body sensation, tears, etc. may occur. If inflammation develops further, it will lead to complications such as corneal ulcer, corneal pannus, etc. Catarrhal conjunctivitis is mostly caused by contact with allergens, bacterial infection, etc. According to the classification of the site of incidence, the disease can be divided into eyelid conjunctiva type, corneal limbus type, mixed type.