Allergies are often hereditary. Over 22 million Americans suffer from allergies, and most of those also have allergic conjunctivitis, according to the American Academy of Ophthalmology. Causes Many allergens are in the air, where they come in contact with your eyes and nose. Pollen is one of the most common airborne allergens. Keep your home free of pet dander and dust, and stay inside with the air conditioner on when a lot of pollen is in the air.
Air conditioners filter out allergens.
If you're not sure what's causing your allergy, or you're not having any luck avoiding it, your next step will probably be medications to alleviate the symptoms. Contact lenses Sports eyewear Eye drops are available as simple eye washes, or they may have one or more active ingredients such as antihistamines, decongestants or mast cell stabilizers. Antihistamines relieve many symptoms caused by airborne allergens, such as itchy, watery eyes, runny nose and sneezing. Decongestants clear up redness and nasal congestion. Some products have ingredients that act as mast cell stabilizers , which alleviate redness and swelling.