What are Eye Allergies?
Eye allergies are a specific form of eye disease caused by different kinds of irritants. These vary from person to person and can include environmental, infectious, or artificial substances. In the process of fighting off this threat, the body’s immune system causes the eyes to release histamine. Histamine is a compound that is released by cells in response to injury and in allergic and inflammatory reactions. This can trigger itchy, red, and watery eyes, as well as inflammation and a bloodshot appearance. Eye allergies mainly affect the surface of the eye as well as the inner folds of the eyelids.2,3,4