Cataracts in Cats: Causes, Treatment & What to Expect

Quick Answer
  • Cataracts are opacities in the lens that can blur vision or cause blindness in one or both eyes.
  • In cats, cataracts are usually secondary to another problem, especially chronic uveitis, rather than normal aging alone.
  • Not every cloudy eye is a cataract. Nuclear sclerosis, corneal disease, and glaucoma can also change eye appearance, so an exam matters.
  • Treatment often focuses on finding and controlling the underlying cause, reducing inflammation, and monitoring for painful complications like glaucoma.
  • Cataract surgery can restore useful vision in selected cats, but many cats who are not surgical candidates still adapt well at home.
Estimated cost: $150–$8,000

What Are Cataracts in Cats?

A cataract is a cloudy or opaque area in the lens of the eye. The lens should be clear so light can pass through to the retina. When the lens becomes cloudy, vision may become blurry, dim, or completely blocked depending on how much of the lens is affected.

Cataracts are less common in cats than in dogs. In cats, they usually do not appear as an isolated age-related change. More often, they develop because something else has affected the eye, especially inflammation inside the eye called uveitis. Trauma, infection, inherited conditions, metabolic disease, and occasionally high blood pressure or diabetes can also play a role.

Some cataracts stay small and cause little day-to-day trouble. Others progress and lead to major vision loss. Cataracts themselves are often not painful, but the conditions linked to them can be. That is why a cloudy eye deserves a veterinary exam even if your cat still seems comfortable.

It is also important to know that a mild bluish haze is not always a cataract. Older cats can develop nuclear sclerosis, a normal lens aging change that looks cloudy but usually does not cause major vision loss. Your vet can tell the difference with an eye exam.

Signs of Cataracts in Cats

Not all cloudy eyes are cataracts, and not all cataracts are emergencies. Still, see your vet promptly if the cloudiness is new, your cat seems painful, the eye is red, the pupil looks abnormal, or vision changes happen suddenly. Those signs can point to uveitis, glaucoma, corneal disease, or other eye conditions that need faster care. A gradual, mild haze in an older cat may be nuclear sclerosis, but only an exam can confirm that.

What Causes Cataracts in Cats?

Chronic uveitis is the leading cause of cataracts in cats. Uveitis means inflammation inside the eye. Over time, that inflammation can damage the lens and trigger cataract formation. Uveitis itself may be linked to infections, immune-mediated disease, trauma, cancer, or sometimes no clear cause despite testing.

Infectious triggers your vet may consider include FIV, FeLV, FIP, fungal disease, and toxoplasmosis. Trauma can also injure the lens directly. Less commonly, cataracts may be associated with metabolic disease such as diabetes or hypertension. Cats are much less likely than dogs to develop diabetic cataracts, but it can happen.

Some cats are born with cataracts or develop them early in life because of inherited factors. Reported breed predispositions include Himalayan, Birman, and British Shorthair cats, though cataracts can occur in any breed or mixed-breed cat.

Because cataracts in cats are often secondary, the real question is not only whether a cataract is present, but why it formed. That answer helps guide treatment, comfort, and what to expect over time.

How Are Cataracts Diagnosed?

Your vet starts with a full eye exam and general physical exam. Using tools such as an ophthalmoscope and often a slit lamp, your vet can look at the lens, cornea, iris, and other eye structures. This helps distinguish a true cataract from nuclear sclerosis, corneal cloudiness, lens luxation, or glaucoma.

Because feline cataracts are commonly secondary to another disease, the workup often goes beyond the eye itself. Your vet may recommend blood work, urinalysis, blood pressure measurement, and infectious disease testing such as FIV and FeLV screening. If uveitis is present, the diagnostic plan may expand based on your cat's age, history, and exam findings.

If surgery is being considered, referral to a veterinary ophthalmologist is the next step. Advanced testing may include ocular ultrasound to look for retinal detachment or other hidden problems behind the cloudy lens, and electroretinography (ERG) to confirm the retina can still function well enough for surgery to improve vision.

Diagnosis is not only about naming the cataract. It is also about checking whether the eye is comfortable, whether vision may be preserved or restored, and whether complications such as glaucoma are developing.

Treatment Options for Cataracts in Cats

Spectrum of Care means you have options. Here are treatment tiers at different price points.

Conservative Care

$150–$600
Best for: Cats with small or stable cataracts, cats with minimal vision change, or families starting with a lower-cost diagnostic plan
  • Primary care exam with eye assessment
  • Fluorescein stain or basic eye testing if needed
  • Monitoring of vision and cataract progression
  • Home setup changes such as keeping furniture, food bowls, and litter boxes in consistent places
  • Discussion of referral timing if vision worsens or pain develops
Expected outcome: Often good for comfort and daily function if the eye is not inflamed or painful. Many cats adapt very well to partial vision loss in a familiar home.
Consider: This approach does not remove the cataract or restore lost vision. It may also miss an underlying cause if additional testing is delayed.
Most Common

Standard Care

$400–$1,800
Best for: Most cats with newly diagnosed cataracts, especially when uveitis, infection, or another underlying problem is suspected
  • Comprehensive exam and ophthalmic assessment
  • Blood work, urinalysis, and targeted infectious disease testing
  • Blood pressure check when indicated
  • Treatment of underlying uveitis or other identified disease with prescribed eye medications and sometimes oral medications
  • Recheck visits to monitor inflammation, comfort, and glaucoma risk
Expected outcome: Good for maintaining comfort and slowing secondary damage when the underlying disease can be controlled. Vision may remain stable in some cats, but existing cataracts usually do not clear with medication.
Consider: Requires follow-up and, in some cats, long-term eye drop use. It manages the cause and complications rather than reversing the lens opacity.

Advanced Care

$3,000–$8,000
Best for: Cats with significant vision loss who are otherwise good surgical candidates and whose eye inflammation is controlled well enough for surgery
  • Veterinary ophthalmologist consultation
  • Pre-surgical testing such as ERG, ocular ultrasound, and lab work
  • Phacoemulsification cataract removal, often with artificial lens placement when appropriate
  • Anesthesia, hospitalization, and intensive post-operative monitoring
  • Multiple follow-up visits and several weeks to months of prescribed eye medications
Expected outcome: Can be very good in carefully selected cats, with restoration of useful vision possible. Outcome depends heavily on retinal health, inflammation control, and post-operative care.
Consider: Highest cost range and most intensive aftercare. Not every cat qualifies, especially if there is active uveitis, glaucoma, retinal disease, or major health concerns.

Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.

Questions to Ask Your Vet About Cat Cataracts

Bring these questions to your vet appointment to get the most out of your visit.

  1. You can ask your vet: Is this definitely a cataract, or could it be nuclear sclerosis, corneal disease, or glaucoma? Several eye problems can make an eye look cloudy, and the next steps depend on the exact diagnosis.
  2. You can ask your vet: Do you see signs of uveitis or another painful eye condition along with the cataract? Cataracts themselves may not hurt, but inflammation inside the eye can be painful and can change treatment priorities.
  3. You can ask your vet: What underlying causes should we test for in my cat's case? Cats often develop cataracts secondary to another disease, so finding the cause can help protect comfort and vision.
  4. You can ask your vet: Is my cat at risk for glaucoma or lens luxation, and what warning signs should I watch for at home? These complications can be urgent and may cause pain or sudden vision loss.
  5. You can ask your vet: Would a referral to a veterinary ophthalmologist help now, or is monitoring reasonable first? Referral timing can affect options, especially if surgery may be considered later.
  6. You can ask your vet: If surgery is an option, what testing is needed first and what kind of recovery should I expect? Cataract surgery requires careful screening and committed aftercare.
  7. You can ask your vet: What home changes would help my cat stay confident and safe if vision is reduced? Simple changes in layout, lighting, and routine can make a big difference in daily quality of life.

Can Cataracts in Cats Be Prevented?

Many cataracts in cats cannot be fully prevented because they are tied to genetics, prior eye injury, or diseases that are not always avoidable. Still, prevention often means reducing the risk of secondary eye inflammation and catching problems early.

Routine veterinary exams matter, especially for senior cats and cats with known medical conditions. Prompt care for a red, squinting, or suddenly cloudy eye can help your vet identify uveitis or trauma before more damage develops. If your cat has diabetes, high blood pressure, or an infectious disease, following your vet's treatment plan may reduce the chance of eye complications.

Indoor living can lower the risk of trauma and some infectious exposures. Keeping up with recommended wellness care, FeLV testing when appropriate, and parasite prevention also supports overall health.

If your cat already has uveitis or another eye disease, the best prevention strategy is consistency. Recheck visits and prescribed medications may help limit ongoing inflammation and reduce the risk of cataract progression or painful complications.

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