Progressive Retinal Atrophy (PRA) – Crd3 Type
Progressive Retinal Atrophy (PRA), crd3 type, is a hereditary degenerative eye disease causing gradual vision loss and eventual blindness in affected dogs.
Detailed Description
PRA-crd3 is caused by a mutation in the ADAM9 gene, leading to progressive degeneration of the photoreceptor cells in the retina. The disease typically starts with night blindness and progresses to complete blindness. It is non-painful but significantly impacts the dog's quality of life.
Common Symptoms
- Night blindness
- Dilated pupils
- Decreased response to visual stimuli
- Bumping into objects, especially in low light
Management Options
- Environmental adaptation (keeping furniture in place, using scent markers)
- Antioxidant supplements (limited evidence)
Frequently Asked Questions
Can PRA be prevented in dogs?
Yes, through genetic testing and responsible breeding practices.
Is PRA painful for my dog?
No, PRA is not painful but does cause progressive vision loss.
How early can PRA be detected?
Genetic testing can identify carriers and affected dogs at any age.
Will my dog go completely blind?
Yes, affected dogs will eventually lose all vision.
Is there a cure or treatment?
There is no cure, but environmental management can help affected dogs live comfortably.
Condition Details
📅
Typical Age of Onset
2–5 years
📋
Testing Available
Yes
🔍
Diagnosing Methods
Genetic testing; Ophthalmic examination; Electroretinography (ERG)
🛡️
Preventative Measures
Genetic testing of breeding stock
🔗
Related Conditions
Other forms of PRA, Cataracts