Urrets-Zavalia syndrome following cataract surgery in dogs : A case series
Cantero, Francisco (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Leiva Repiso, Marta (Universitat Autònoma de Barcelona. Hospital Clínic Veterinari)
Gaztelu, Laura (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Cerrada, Irene (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Cardoso, Rita Vilao (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)
Peña Giménez, Ma. Teresa (Universitat Autònoma de Barcelona. Departament de Medicina i Cirurgia Animals)

Data:	2022
Resum:	In human medicine, Urrets-Zavalia syndrome (UZS) is a well-recognized but uncommon postoperative complication characterized by a fixed dilated pupil, accompanied by iris atrophy and glaucoma. Although it was originally reported in 1963 after penetrating keratoplasty surgery for keratoconus, it has been associated with various ophthalmic procedures such as cataract surgery. The condition has not been previously published in the veterinary literature. Three client-owned diabetic dogs that developed UZS's triad after cataract surgery are described. Despite uneventful phacoemulsification in the six eyes, five developed moderate-to-severe postoperative ocular hypertension. Although intraocular pressure (IOP) spikes were initially controlled, fixed dilated pupils accompanied by iris atrophy and chronic ocular hypertension were seen in the five affected eyes. Aggressive medical and surgical management maintained vision in three of those eyes. In one eye, uncontrolled IOP led to blindness. This is the first published description of UZS in dogs, occurring after phacoemulsification. Although no exact, demonstrable causative element could be determined, we believe that should be considered a triggering condition for this syndrome, as it directly affects the ocular blood flow autoregulation and intrinsic uveal tissue integrity. Until the contrary is proved, diabetes mellitus might be considered as a risk factor for developing this syndrome after cataract surgery in dogs.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Iris atrophy ; Mydriasis ; Ocular hypertension ; Phacoemulsification ; Postoperative complication
Publicat a:	Open Veterinary Journal, Vol. 12 (february 2022) , p. 138-147, ISSN 2218-6050

DOI: 10.5455/OVJ.2022.v12.i1.17
PMID: 35342734

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