Why does one eye keep watering?

Our eyes make tears all the time to help keep them clean and comfortable. Normally, these tears flow out through small channels called tear ducts. Sometimes, one eye can keep watering if one of these ducts is partly or fully blocked. This blockage makes the eye overflow because the tears have nowhere to go.

Other reasons may include irritation like an allergy or a small injury that causes extra tears to be made. In rare cases, constant watering in one eye may point to a growth or other abnormal change, which is why it's important to get it checked out by an eye doctor. They can look at the tear ducts and the rest of your eye to find the exact cause and suggest proper treatment.

Whether it's a simple blockage that may be treated with a special plug or more advanced care, getting help can make a big difference. If you're experiencing persistent eye watering and want to understand what might be causing it, try Ubie's free AI-powered symptom checker to help identify potential causes before your appointment. Always remember that when something doesn't seem right with your eyes, talking to a trusted professional is a very good step.