Eye allergies, also known as ocular allergies or allergic conjunctivitis, occur when the immune system overreacts to a substance (allergen) that comes into contact with the eyes.
Symptoms can include itching, redness, watering, and puffiness of the eyes, as well as a feeling of grittiness or foreign body sensation. Eye allergies can be caused by a variety of allergens, including pollen, pet dander, dust mites, and mold.
For additional information check out "How Allergies Affect You Eyes" in the resource center.