What causes eye allergies?

Eye allergies are typically caused by allergens that come into contact with the eyes, triggering an immune response. Common allergens that can cause eye allergies include pollen, dust mites, pet dander, mold, and certain foods or medications. When these allergens come into contact with the eyes, the immune system releases chemicals such as histamine, which leads to symptoms such as itching, redness, swelling, and tearing. Genetics and environmental factors can also play a role in the development of eye allergies.

- Allergens: Eye allergies are caused by exposure to allergens, which are substances that trigger an allergic reaction. Common allergens that cause eye allergies include pollen, dust mites, pet dander, mold spores, and smoke.
- Irritants: Irritants are substances that can irritate the eyes and cause symptoms similar to allergies. Common irritants include smoke, chemicals, cleaning products, and chlorine.
- Infections: Some infections, such as pink eye, can also cause eye allergy symptoms.