Australian Shepherds may develop eye problems that are inherited, age-related or caused by injury or systemic disease. One inherited condition owners may encounter is collie eye anomaly (CEA), which can occur in Australian Shepherds as well as Collies and several other breeds.
What is collie eye anomaly?
CEA is associated with abnormal development of structures at the back of the eye. Some affected dogs retain useful vision; more severe changes can involve defects near the optic nerve, retinal detachment or bleeding. An ordinary photo of the eye cannot rule the condition in or out.
How is it detected?
A veterinary ophthalmologist can examine the retina and related structures, often most usefully when the dog is young. Genetic testing may identify a known CEA-associated variant and help breeders evaluate risk, but owners should discuss how any result relates to the individual dog’s clinical exam.
Other reasons an Aussie may have vision changes
Progressive retinal atrophy, cataracts, retinal dysplasia, inflammation and trauma can cause eye abnormalities. Sudden blindness, a painful red eye, squinting or a visibly enlarged eye needs prompt examination; some causes threaten vision quickly.
What to ask the vet
Is a routine ophthalmology screening appropriate? Are genetic test results available from the breeder? Should the dog be evaluated for another inherited condition? If vision changes are new, what urgent testing is needed?
See Merck Veterinary Manual: The Ocular Fundus in Animals for information on CEA and other retinal abnormalities.
Educational only; eye disorders require appropriate examination.
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.