title: The wrinkle sign in tear duct obstruction.
abstract: We describe here a skin configuration present during tear duct probing in cases of canalicular and common internal punctal obstruction which we term the "wrinkle sign." The technique for eliciting the sign and the significance of its presence is described. Observation of the "wrinkle sign" is a useful adjunct to the standard technique of tear duct probing.
mesh_terms: D002404:Catheterization / Q000295:instrumentation; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000175:diagnosis*; D012867:Skin