Brief Answer: It can be because of obstruction of tear drainage. Detailed Answer: Hello Welcome to health care magic Iam Dr.Dadapeer, an Ophthalmologist and I answer health problems related to eye. It seems from the history that you are having constant watering from the eye associated with intermittent pain. This can be seen in inflammatory/ obstructive conditions of the structures which drain the tears from eyes like lacrimal sac.This can be because of acute or chronic dacryocystitis. In the initial stages they present with only watering and later they may present with discharge from the eyes. The treatment of the condition is by using topical antibiotic eye drops. The condition requires examination by ophthalmologist to find out the type and extent of obstruction and treatment accordingly. Hope the information is helpful to you. Thank you

---