If eyes have ocular immune privilege, how come so many environmental allergies manifest themselves as itchy/watery/swollen eyes?

Question

If eyes have ocular immune privilege, how come so many environmental allergies manifest themselves as itchy/watery/swollen eyes?

In: Biology

Answer 1

The inside of the eyes have no immune system. The eye sockets themselves do. Allergies causes inflammation of the tear ducts and tissues around the eye as your body tries to flush the allergen out.