Allergic Conjunctivitis

Allergic conjunctivitis

Allergic conjunctivitis occurs when the outer part of the eye becomes swollen or irritated in a reaction to pollen, dander, mold, or other substances that trigger allergies.

Allergy-causing substances release a chemical called histamine into the eyes, which causes the blood vessels in the outer layer of the eye to become swollen. The eyes may quickly become red, itchy, and watery. Other symptoms of allergic conjunctivitis include:

• burning eyes
• puffy eyelids, especially in the morning
• stringy discharge in the eyes
• widened blood vessels in the outer layer of the eye

How to prevent it

The best way to avoid allergic conjunctivitis is to avoid the substances that trigger your symptoms. But researchers have also found eye drops to be helpful in preventing allergic conjunctivitis in those who are prone to allergic reactions. The antihistamines emedastine and levocabastine are helpful in preventing the condition. Use these after you have been exposed to a trigger, such as a day with high air pollen levels.