Progressive retinal atrophy has no treatment - your cat will go blind. PRA is inherited disease where the retina degenerates over months to years. Owners typically notice when cats bump into furniture in dim light or show dilated pupils. By then, significant vision is lost. Diagnosis costs $200-$500; no medicine can stop it.
What Causes PRA in Cats
Inherited disease where retinal photoreceptors degenerate. Rod cells (night vision) fail first, then cone cells (color and detail). Different mutations affect different breeds - rdAc is common in Abyssinians and Somalis. Autosomal recessive: both parents must carry the gene.
Inherited, progressive, incurable
Symptoms What to Watch For
Night blindness comes first - hesitation in dim light, bumping into objects, reluctance to jump in dark rooms. Pupils become progressively dilated with increased eye shine in photos. Eventually complete blindness in both eyes. Some cats compensate well; owners don't notice for months.
Earliest sign: night blindness
Diagnosis $200-$500
Ophthalmologist exam reveals retinal thinning, blood vessel attenuation, and increased reflectivity. Electroretinography (ERG) detects PRA before symptoms by measuring retinal cell response. DNA testing ($100-$200) confirms the mutation. Both eyes always affected.
Average: $200-$500
Treatment None Available
No treatment, surgery, or medication can stop PRA. Antioxidant supplements lack proven benefit. Focus on home adaptation: keep furniture positioned consistently, use scent markers, avoid rearranging rooms, and block hazards.
No cure - focus on adaptation
Total Cost $200-$500
Diagnosis only. There's no ongoing treatment cost beyond routine vet visits. DNA testing for breeding cats adds $100-$200. $200-$500 for complete diagnosis.
Certain Breeds Higher Risk
Progressive Leads to Blindness
Timeline varies by breed and mutation. Some cats lose vision over 1-2 years, others over 5+. Complete blindness is inevitable, but cats adapt remarkably well.
Prevention
DNA test breeding cats before mating. Never breed two carriers together. Responsible breeding is the only way to eliminate PRA from affected lines.
The Real Cost
$200typical cost
Diagnosis only.
Diagnosis $200-$500
Total Cost $200-$500
Red flags
Insurance Traps
With no treatment available, insurance value for PRA is limited - but diagnosis coverage still matters.
PRA Coverage Basics Chronic condition
Most policies cover diagnostic workup - ophthalmologist exams and electroretinography. The standard 14-day illness waiting period applies. Since there's no treatment, ongoing coverage provides limited benefit. The main value is covering the specialist diagnosis: $200-$500.
The Hereditary Exclusion Problem Exclusion
PRA is hereditary and some budget policies exclude hereditary conditions entirely. If you own an Abyssinian, Somali, or Persian, verify your policy covers inherited diseases. Even diagnostic costs may be denied if your insurer excludes hereditary conditions. Premium plans typically cover the diagnosis.
Limited Financial Impact Deductible
PRA has low total cost: $200-$500 since there's no treatment. Insurance value is more peace of mind than protection. Your deductible alone may exceed total diagnosis cost. PRA is one condition where insurance doesn't dramatically change finances.
Secondary Complications Coverage Coverage
Blind cats risk injury from falls, collisions, and accidents. Insurance covering accident-related injuries becomes more valuable after vision loss. Some cats develop anxiety or behavioral changes requiring veterinary care. These secondary issues are typically covered separately.
Common Questions
Real answers about costs, treatment, and insurance coverage.
What is progressive retinal atrophy in cats?
PRA is a group of inherited diseases where retinal photoreceptors slowly deteriorate. Rod cells (night vision) degenerate first, followed by cone cells (color and detail). This causes progressive, irreversible blindness in both eyes. Different gene mutations cause PRA in different breeds.
Can PRA in cats be treated or cured?
No - no treatment, surgery, or medication can stop PRA. Gene therapy research is ongoing but not yet available clinically. Retinal cells cannot regenerate once lost. Focus is entirely on adapting the home environment for declining and eventual blindness.
How quickly does a cat go blind from PRA?
Timeline varies by breed and mutation. In Abyssinians (rdAc mutation), vision loss typically progresses over 2-5 years with complete blindness by age 5-7. Early night blindness can last months to years before daytime vision fails. Each cat progresses at its own pace.
What are the first signs of PRA in cats?
Hesitation or clumsiness in dim light - bumping into objects, reluctance to navigate at night. Pupils become permanently dilated; increased eye shine in photos is another early clue. Many owners mistake these changes for aging rather than vision loss.
Which cat breeds are most affected by PRA?
Abyssinians and Somalis have the highest prevalence (rdAc mutation). Persians and Siamese are affected by different PRA mutations. DNA tests identify rdAc carriers. Responsible breeders test all breeding cats and avoid mating two carriers.
Can a blind cat live a normal life?
Yes - blind cats adapt remarkably well, especially with gradual vision loss. They rely on whiskers, hearing, smell, and spatial memory. Keep furniture positioned consistently, use scent markers near hazards, and block stairways. Most play, navigate confidently, and live full lives.
Is there a DNA test for PRA in cats?
Yes - DNA tests exist for several PRA mutations, including rdAc in Abyssinians and Somalis. Cost: $40-$100. Results: clear, carrier, or affected. Carriers show no symptoms but pass the gene - testing is the only way to eliminate PRA from bloodlines.
Does pet insurance cover PRA diagnosis in cats?
Most comprehensive policies cover diagnostic workup - ophthalmologist exams and electroretinography. Since PRA has no treatment, main financial consideration is $200-$500 diagnosis. Budget policies excluding hereditary conditions deny even diagnostic costs. Ensure your policy covers inherited diseases if you own an at-risk breed.
My mother-in-law's boxer. Problem. $1,200 in tests, no answers. Another vet solved it with $8 pills. When you're scared, you'll pay anything - and some vets price accordingly. So I built what I couldn't find: real costs, real exclusions, plain language. Not selling policies.
Sources
Research and data used to compile this profile.