Allergic conjunctivitis and atopic keratitis, manifested by watery eyes, redness and itching, affect up to 50% of the population. These symptoms are caused by allergies to pollen, house dust mites or animal hair. Allergy eye drops that you buy at a pharmacy without a prescription, e.g. with ectoine, azelastine, olopatadine or ketotifen, can significantly reduce allergy symptoms and facilitate everyday functioning.