Day Blindness
A rare, breed-specific inherited retinal disorder causing vision loss in bright light.
Detailed Description
Day blindness is caused by a mutation affecting cone photoreceptors, leading to inability to see in daylight. Dogs have normal night vision but are functionally blind in bright light. Management includes avoiding bright light and using tinted goggles.
Common Symptoms
- Bumping into objects in bright light
- Normal behavior at night
- Reluctance to go outside during the day
Management Options
- Avoiding bright light
- Using tinted goggles
Frequently Asked Questions
Is day blindness painful?
No, but it can be disorienting for the dog.
Can it be cured?
No, but it can be managed.
How is it inherited?
Autosomal recessive; both parents must be carriers.
Condition Details
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Typical Age of Onset
Puppyhood (as early as 8 weeks)
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Testing Available
Yes
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Diagnosing Methods
Electroretinography (ERG); Genetic testing
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Preventative Measures
Genetic testing of breeding stock
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Related Conditions
Progressive retinal atrophy, Cataracts