Allergic conjunctivitis

Allergic eye disease is one of the most common ocular surface diseases, of which allergic conjunctivitis is the most common type. Allergic conjunctivitis, also known as allergic conjunctivitis, is a hypersensitivity reaction of the conjunctiva to external allergens. Conjunctival edema can also occur during the onset of seasonal allergic conjunctivitis, especially in children. It mainly includes type I allergies and type IV allergies, of which allergic conjunctivitis caused by type I allergies is the most common.