Causes of watering eye Epiphora:(defective drainage):compromise of the lacrimal drainage system: a)malposition of the lacrimal puncta (e.g. ectropion) b)obstruction (anywhere along the lacrimal drainage system,from puncta to the nasolacrimal duct) c)lacrimal pump failure (lower lid laxity or weakness of the orbicularis muscle)Causes of watering eye Epiphora:(defective drainage): compromise of the lacrimal drainage system: • a) malposition of the lacrimal puncta (e.g. ectropion) • b) obstruction (anywhere along the lacrimal drainage system, from puncta to the nasolacrimal duct) • c) lacrimal pump failure (lower lid laxity or weakness of the orbicularis muscle)