Cause of allergic conjunctivitis pollen dust is allergen
Allergic conjunctivitis is the second major ocular surface disease after dry eye in ophthalmic clinic, which has certain seasonality. Allergic conjunctivitis, also known as allergic conjunctivitis, is an allergic reaction of the mucous membrane on the surface of the eye to the special allergen particles suspended in the air, mainly including type I allergic reaction and type IV allergic reaction, of which type I allergic conjunctivitis is the most common.
Anaphylactic conjunctivitis caused by type I allergic reaction has a quick style, including seasonal anaphylactic conjunctivitis, perennial anaphylactic conjunctivitis, megapapillary conjunctivitis, vernal keratoconjunctivitis, ectopic keratoconjunctivitis, etc.; anaphylactic conjunctivitis caused by type IV allergic reaction has a late style, mainly including vernal catarrhal conjunctivitis.
The common allergens are pollen, dust, dust mite and some animal hair. Pollen is the most common seasonal allergen. In addition, there are also some allergies that are closely related to the eye and perfume, cosmetics, drugs, contact lenses and their maintenance liquid, hair coloring solution, etc. Most of the allergic conjunctivitis has self limitation, the main purpose of treatment is to reduce symptoms and avoid the occurrence of sequelae, and the most effective treatment is to get rid of allergens.
Try to avoid rubbing your eyes
The most common symptom of allergic conjunctivitis is red eye itch, part of which has white secretion and conjunctival congestion. Hyperplasia of conjunctival papilla is another common sign. Papilla usually occurs in conjunctiva of upper eyelid.
When seasonal allergic conjunctivitis has an acute attack, it will appear red, swollen and congested conjunctiva, itchy eyes and watery eyes. Children with allergic constitution are more likely to have an attack.
Conjunctival edema mostly occurs after rubbing eyes, some patients will feel "flesh in eyes" protruding, which is the result of conjunctival high edema, so try to avoid rubbing eyes. Patients usually try to avoid stimulating factors, such as not staying in a hot place for a long time, avoiding dazzling sunshine, etc. If the eye discomfort is serious, artificial tears can also be used under the guidance of a doctor.
If the disease occurs every year, it should be prevented two weeks before the beginning of the next spring to reduce the symptoms.