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Vet Ophthalmol ; 23(6): 964-978, 2020 Nov.
Article in English | MEDLINE | ID: mdl-33058381

ABSTRACT

OBJECTIVE: Provide epidemiological data regarding the prevalence of congenital ocular malformations in dogs and cats. ANIMALS STUDIED: A population of 32 974 dogs and 13 977 cats that presented for consultation at the veterinary teaching hospital. PROCEDURES: Medical records from 2011 to 2018 were reviewed. A retrospective and prospective epidemiological clinical study addressing congenital ocular malformations was conducted. Signalment, medical history, reason for presentation, clinical findings, vision impairment, and treatment options were analyzed. RESULTS: From the total of cases analyzed, 103 dogs (0.3%) and 20 cats (0.1%) met the inclusion criteria. The majority of dogs were mixed breed, the most common breed being the French Bulldog, while the majority of cats were European domestic shorthair. The median age of diagnosis was 12 months for dogs and 6 months for cats. Sex predisposition was not found. The most frequently identified abnormalities were as follows: congenital cataract (dogs: 31.1%; cats: 30.0%), microphthalmia (dogs: 35.0%, cats: 25.0%), and persistent pupillary membrane (dogs: 27.2%, cats: 40.0%). Some of the concurrently observed malformations were significantly associated. A statistically significant association was found between ocular dermoids and the French Bulldog breed (P < .001). CONCLUSIONS: Even though congenital ocular malformations are uncommon, knowledge about their prevalence is important, since they can cause vision impairment or even blindness. Moreover, some human ocular disease phenotypes are similar to the ones presented by dogs and cats, so they can be used as models to investigate pathophysiology and therapeutic approaches.


Subject(s)
Cats/abnormalities , Dogs/abnormalities , Eye Abnormalities/veterinary , Animals , Eye Abnormalities/epidemiology , Eye Abnormalities/therapy , Female , Male , Prevalence , Retrospective Studies
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