3.Allergies
Watery, itchy eyes often come with a cough, runny nose, and other classic allergy symptoms. But it’s possible to have eye allergies on their own. Allergy medicines, eye drops, and avoiding your triggers — like pollen, mold, or pet dander — can help. While colds can cause watery eyes, too, they won’t make them itch. That’s one way to tell colds and allergies apart.
4.Blocked Tear Duct
Normally, tears flow out of the tear glands above your eye, spread across the surface of your eyeball, and drain into ducts in the corner. But if the ducts get clogged, the tears build up and your eye gets watery. Lots of things can cause the problem, like infections, injuries, even aging.