[Diagnosis and treatment of the watering eye].

The wet eye is a common symptom that ophthalmologists as well as otorhinolaryngolists are confronted with. The causes can be diverse, affecting all parts from the lacrimal gland to the lacrimal drainage system. Frequently tear film changes are the reason for the symptoms, which may vary from classic epiphora and impaired vision to tear film instability with damage of the corneal epithelium. The knowledge and understanding of the underlying pathologies and differential diagnosis is crucial in order to initiate adequate therapy and to avoid overtreating with invasive surgical means.