allergy eye drops

Antihistamine eye drops are prescribed for itchy, red, and swollen eyes, brought on by allergies. Such irritation occurs because the immune system responds to usual allergens, such as pollen, house dust, or even the dander of particular pets, through a process called histamine release, lots of it. Antihistamine eye drops act by blocking off the histamines, and the relief from such discomfort comes around.