Watering eye, epiphora or tearing, is a condition in which there is an overflow of tears onto the face, often without a clear explanation. There is insufficient tear film drainage from the eye or eyes. Instead of the tears draining through the nasolacrimal system, they overflow onto the face. Tears are needed to keep the front surface of the eye healthy and maintain clear vision, but too many tears can make it difficult to see. This can make driving difficult or dangerous. Epiphora can develop at any age, but it is more common in those aged under 12 months or over 60 years. It may affect one or both eyes. Watering eye can usually be treated effectively.