title: Bilateral nasolacrimal duct atresia in a cria.
abstract: A 2-month-old, male alpaca had a 1-month history of mucoid ocular discharge from the left eye. Signalment, history and clinical findings were suggestive of a congenital nasolacrimal outflow obstruction. A dacryocystorhinogram confirmed bilateral nasolacrimal duct atresia, which involved the distal half of both nasolacrimal ducts. In order to establish alternative outflow, a conjunctivomaxillosinusotomy and conjunctivorhinostomy were performed on the right and left eye, respectively. The surgical openings remain patent after 11 months, and there have been no clinical signs of nasolacrimal disease.
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, Colorado, USA. bman@colostate.edu
authors.forename: Brendan G
authors.initials: BG
authors.lastname: Mangan
authors.forename: Juliet R
authors.initials: JR
authors.lastname: Gionfriddo
authors.forename: Cynthia C
authors.initials: CC
authors.lastname: Powell
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D002161:Camelids, New World; D003608:Dacryocystorhinostomy; D003937:Diagnosis, Differential; D007767:Lacrimal Duct Obstruction / Q000151:congenital / Q000175:diagnosis / Q000662:veterinary*; D008297:Male; D009301:Nasolacrimal Duct / Q000473:pathology / Q000601:surgery*