Ocular allergies—called allergic conjunctivitis—are a common but frustrating condition that affects millions of people, especially during seasonal changes. If your eyes frequently itch, water, or turn red, allergies may be the culprit rather than an infection. At the core of ocular allergies is an overreaction of the immune system. When your eyes come into contact with allergens like pollen, dust mites, pet dander, or mold, the body releases histamine and other chemicals. Thi