Why is only my left eye watering?

Your eyes make tears to keep you comfortable and clear away dust or germs. Each eye has its own tear drainage channel. When only one eye waters, it could mean that the system in that eye is not working properly.

A common reason is a blockage in the tear duct that stops tears from draining out as they should. Irritation from allergies, dust, or even a small injury can also cause your eye to produce extra tears.

In some cases, there might be a rare condition like a growth affecting the tear drainage of the eye. When this happens, the excess tears have nowhere to go and overflow onto your face. If this watering keeps happening, you can use a free symptom checker to better understand what might be causing your symptoms before visiting an eye doctor.

They can check your eye closely to see if the tear duct is blocked or if something else is causing irritation. Getting the right treatment, such as using special plugs or other therapies, can help stop the eye from watering too much.