Cataracts affect 0.37% of normal cats but over 33% of diabetic cats - making diabetes the leading cause of feline cataracts. Unlike dogs, cats rarely develop age-related cataracts. Surgery (phacoemulsification) costs $1,500-$3,500 per eye and achieves visual success in over 90% of cases. Only a veterinary ophthalmologist can perform the procedure.
Why Cataracts Develop in Cats
Cataracts are almost always secondary to another condition - not age-related. Main causes: diabetes mellitus (33.5%), severe dehydration (26%), uveitis, trauma, and congenital defects. Diabetes is the leading cause. Prevalence in normal cats: 0.37%.
Signs & Diagnosis
Cloudiness or bluish-gray opacity, bumping into objects, reluctance to jump. Ophthalmologist uses slit lamp, measures intraocular pressure (to rule out glaucoma), and performs electroretinography to confirm retinal function before surgery.
Cost Breakdown $200-$3,500
Consultation: $150-$300. Workup (slit lamp, tonometry, ERG): $200-$500. Surgery per eye: $1,500-$3,500. Pre-surgical bloodwork: $100-$150. Post-op drops: $50-$150/month. Follow-ups: $100-$200 each.
Treatment Surgery Is the Only Cure
No medication reverses cataracts. Phacoemulsification - ultrasonic lens removal with artificial lens implant - is the only treatment. A multicenter study of 71 cats achieved 92.6% visual success at 12 months. Uveitis-induced cataracts have lower outcomes.
Total Cost $2,000-$4,000
Per eye (surgery + workup + post-op). Bilateral surgery: $4,000-$8,000. Managing the underlying cause adds to ongoing cost.
Prognosis
Excellent when the underlying cause is controlled and surgery is performed before complications develop. Inflammation-induced cataracts have more variable outcomes - ongoing uveitis can cause re-adhesion and surgical failure.
Timing Matters
Early surgery (before lens-induced uveitis develops) gives the best outcomes. Mature or hypermature cataracts increase surgical risk. Retinal function must be confirmed before surgery is attempted.
Prevention
Controlling diabetes with insulin is the most impactful prevention step. Regular ophthalmic checks in diabetic cats allow early detection. No nutritional supplement prevents cataracts in cats.
The Real Cost
$2,500typical cost
Ophthalmology consultation + workup + phacoemulsification surgery (one eye).
Ophthalmic consultation + ERG $350-$800
Surgery (per eye) $1,500-$3,500
Post-op medications (3 months) $150-$450
Red flags
Insurance Traps
Cataract surgery is expensive - verify your policy covers specialist ophthalmology and the underlying cause.
Coverage Basics Coverage
Cataracts caused by illness (diabetes, uveitis) are covered when the condition is not pre-existing. Ophthalmology consultation, ERG, and phacoemulsification are covered as diagnostic and surgical expenses. Congenital cataracts are often excluded.
Diabetes Trap Pre-existing
If your cat was diagnosed with diabetes before enrollment, cataracts from diabetes are excluded. This is the most common denial - diabetes and cataracts are treated as one linked condition.
Hereditary / Congenital Exclusion Hereditary
Congenital and hereditary cataracts are excluded by many policies. If records show early-onset lens opacity or family history, insurers may classify as congenital regardless of actual cause.
Specialist Referral Requirement Specialist
Some policies require primary care vet referral to a specialist before covering ophthalmology. Emergency referrals without authorization may be partially denied. Check requirements before your exam.
Common Questions
Real answers about feline cataracts, surgery costs, and insurance coverage.
What causes cataracts in cats?
Main cause: diabetes mellitus (33.5% of diabetic cats). Others: uveitis, severe dehydration, trauma, congenital defects. Hereditary cataracts are rare. Any lens cloudiness warrants a vet exam to identify the underlying cause.
How common are cataracts in cats?
Uncommon in normal cats - only 0.37% prevalence. Risk is much higher in populations: 33.5% of diabetic cats and 26% after severe dehydration. Regular eye checks are important for diabetic cats.
Can cataracts in cats be treated without surgery?
No - no medication or eye drop reverses cataracts. Phacoemulsification - lens fragmentation, removal, and artificial implant - is the only definitive treatment. Untreated mature cataracts progress to lens-induced uveitis and glaucoma.
What is the success rate of cataract surgery in cats?
A multicenter study of 71 cats reported 92.6% visual success at 12 months. Results are best when the underlying cause is controlled and surgery occurs before complications. Uveitis-induced cataracts have more variable outcomes.
How much does cataract surgery cost for a cat?
Surgery: $1,500-$3,500 per eye. Workup: $350-$800. Post-op drops: $150-$450 over 3 months. Total: $2,000-$4,000 per eye. Bilateral: $4,000-$8,000. Only board-certified ophthalmologists perform it.
How is a cataract different from nuclear sclerosis in cats?
Nuclear sclerosis is normal aging - lens becomes hazy but remains transparent and doesn't impair vision significantly. A cataract is true opacity that blocks light and causes vision loss. Nuclear sclerosis does not.
Does pet insurance cover cataract surgery for cats?
Most comprehensive policies cover surgery when the underlying cause is not pre-existing. Biggest trap: if diabetes was diagnosed before enrollment, both are excluded. Some policies require referral authorization.
When should my cat see an ophthalmologist for cataracts?
As soon as lens opacity is noticed - early cataracts are easier to remove. Ophthalmologist performs electroretinography to confirm retinal function. Waiting increases risk of uveitis and secondary glaucoma.
Related Conditions
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.
- 1 Williams DL, Heath MF. Prevalence of feline cataract: results of a cross-sectional study of 2000 normal animals, 50 cats with diabetes and one hundred cats following dehydrational crises. Vet Ophthalmol. 2006;9(5):341-9.
- 2 Fenollosa-Romero E, Jeanes E, Freitas I, Enache AE, Lockhart R, Fleming L, Knott TNL, Dawson C, Smith K, Busse C. Outcome of phacoemulsification in 71 cats: A multicenter retrospective study (2006-2017). Vet Ophthalmol. 2020;23(1):141-147.