Optrex Allergy Eye Drops help to relieve and prevent the redness, watering and itching from hayfever, asthma or an allergy to housemites, pet hairs, etc.  It helps to protect your eyes by blocking the release of histamines to prevent the allergic reaction taking place.  Take Optrex Allergy Eye Drops before and throughout the high pollen season, to help avoid hayfever symptoms like itching, watery eyes.