![]() ![]() But almost anything can provoke reactions in susceptible people. The histamine also stimulates the eye’s many nerve endings thus initiating the maddening allergic itch.Ĭommon allergens include pollen, dust mites, ragweed, mold, pet dander, perfumes, smoke, and some fragrance or cosmetic ingredients. The histamine stimulates the eye’s blood flow, encouraging swelling and redness as vessels dilate and leak. What Is an Eye Allergy? #Įye allergy occurs when the body, sensing an attacker, mobilizes the eye’s estimated 50 million white blood “mast” cells to release histamine and other substances to defeat outside irritants. The American College of Allergy, Asthma, and Immunology (ACAAI) warns, for example, that extended use of some nasal allergy medications can leave allergic eyes drier and more irritated than they were previously. ![]() Making these distinctions is critical to ensuring that you receive the proper treatment and quickly reduce not only symptoms but the risk of harm. People may treat allergic conjunctivitis as part of a nasal allergy, or they mistake it for more serious conditions, including infectious conjunctivitis (“pink eye”), dry eye disease (DED), blepharitis, herpes virus, or keratitis. When allergies target the eyes, though, the condition can be infuriatingly confounding. The majority endure the worst symptoms when grasses, pollens, and mold are abundant, with the ailment often recurring each year. Unlike the nasal-centric and familiar allergic rhinitis, or “hay fever,” allergic conjunctivitis targets the transparent cell layer covering the white of the eye and lining the lids, the conjunctiva - although both allergies frequently coexist.Ībout 50 million Americans face allergies, which are immune system overreactions to otherwise benign environmental triggers. If that sounds familiar, you’re probably among the millions facing eye allergies, or allergic conjunctivitis.
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