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Congenital stationary night blindness in a Thoroughbred and a Paso Fino
Author(s) -
Nunnery Catherine,
Pickett J. Phillip,
Zimmerman Kurt L.
Publication year - 2005
Publication title -
veterinary ophthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.594
H-Index - 50
eISSN - 1463-5224
pISSN - 1463-5216
DOI - 10.1111/j.1463-5224.2005.00416.x
Subject(s) - blindness , ophthalmology , medicine , horse , optometry , biology , paleontology
This report documents congenital stationary night blindness (CSNB) in two non‐Appaloosa horse breeds (Thoroughbred and Paso Fino). History of vision impairment since birth, normal ocular structures on ophthalmic examination, and electroretinographic findings were consistent with CSNB. In one horse (Thoroughbred), a 9‐year follow‐up was carried out. In the Paso Fino, severe vision impairment from birth to approximately 1 year of age in both dim and bright light situations led to humane euthanasia and histopathologic confirmation of the disorder.