Inherited Eye Disorders (Cataracts and Progressive Retinal Atrophy)
Inherited eye diseases, including cataracts and PRA, can lead to vision loss and blindness.
Detailed Description
Cataracts involve clouding of the lens, while PRA is a degenerative disease of the retina. Both can be inherited and may progress to blindness. Early detection via ophthalmologic screening is important for breeding decisions.
Common Symptoms
- Cloudy eyes
- Night blindness
- Bumping into objects
- Dilated pupils
Management Options
- Cataracts: surgical removal (phacoemulsification)
- PRA: antioxidants and environmental adaptation
Frequently Asked Questions
Are eye problems common in some breeds?
Yes, both cataracts and PRA are recognized breed concerns in several breeds, including Chinooks.
Can PRA be treated?
No cure; management focuses on quality of life.
Should affected dogs be bred?
No, to prevent passing on the genes.
How often should dogs have eye exams?
Annually, per OFA recommendations.
What are early signs of PRA?
Night blindness and increased clumsiness in dim light.
Condition Details
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Typical Age of Onset
Cataracts: variable, often middle-aged; PRA: typically 3–7 years
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Testing Available
Yes
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Diagnosing Methods
Ophthalmic exam; Electroretinography (for PRA); Genetic testing (if available)
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Preventative Measures
Annual eye exams; Do not breed affected dogs
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Related Conditions
Nuclear sclerosis, Glaucoma