Tearing (Epiphora) By Christopher J Brady, MD, Wilmer Eye Institute, Retina Division, Johns Hopkins University School of Medicine Reviewed / Revised May 2021 | Modified Sep 2022 View Patient Education Pathophysiology Etiology Evaluation Treatment Geriatrics Essentials Key Points Topic Resources Anatomy of the lacrimal system Some Causes of Tearing Excess tearing may cause a sensation of watery eyes or result in tears falling down the cheek (epiphora).