Cataracts in Maltese: Vision Loss, Treatment & Care Options

Cataracts are a common cause of vision loss in dogs and can be particularly important in the senior Maltese (generally entering their senior years at about 8–9 years of age, with a lifespan of 12–15 years). The Maltese is a small, [brachycephalic](https://seniorpet.org/knowledge/persian-cat-brachycephalic-airway "Brachycephalic Syndrome Guide")-toy breed with a number of breed-associated conditions (mitral valve disease, luxating patella, portosystemic shunt, [dental disease](https://seniorpet.org/knowledge/siamese-cat-dental-disease "Dental Disease in Senior Pets"), collapsed trachea, and white shaker syndrome) that affect both the development of cataracts and the approach to diagnosis, anesthesia, and treatment. This article reviews the types of cataracts seen in Maltese, how they are diagnosed, how comorbidities change decision-making, treatment options (medical and surgical), likely outcomes and complications, and practical, actionable care steps for owners.

Why Maltese owners should be alert to cataracts

Maltese are predisposed to several ocular and systemic conditions:

• Hereditary and juvenile cataracts have been reported in Maltese lines (small/toy breeds are overrepresented for hereditary lens disease).
• Age-related cataracts can develop as Maltese reach senior years (~8–9 years and older).
• Comorbid systemic conditions common in Maltese (e.g., portosystemic shunt, [mitral valve disease](https://seniorpet.org/knowledge/cavalier-king-charles-spaniel-mitral-valve-disease "Mitral Valve Disease Guide"), dental disease) increase anesthetic risk and influence whether cataract surgery is possible or advisable.

Because Maltese rely on vision to navigate a home environment that can include stairs and small spaces, vision loss may reduce [quality of life](https://seniorpet.org/knowledge/siamese-cat-quality-of-life "Quality of Life Assessment") rapidly. Early recognition and informed planning provide the best chance for restoring useful vision or adapting the home safely.

What is a cataract? Types relevant to Maltese

A cataract is any opacity of the crystalline lens that interferes with light reaching the retina. Types you may see in Maltese include:

• Congenital/hereditary cataracts: can appear in puppies or young adults and are a recognized problem in some Maltese lines.
• Age-related (senile) cataracts: lens fibers degenerate with age; more likely in senior dogs.
• Diabetic cataracts: rapid and common in diabetic dogs; less common in Maltese unless diabetic.
• Traumatic cataracts: from blunt or penetrating eye injury.
• Secondary cataracts/persistent pupillary membranes: sometimes seen with chronic uveal inflammation.

When reviewing a Maltese with lens opacity, a veterinarian will try to determine whether the cataract is longstanding, progressive, or related to systemic disease.

Clinical signs in Maltese

Signs of cataracts and vision loss in a senior Maltese may be subtle:

• Bumping into furniture or walls, hesitancy on stairs.
• Reduced ability to play fetch or follow toys.
• Anxiety in new places or increased startle response.
• Cloudy-white or gray pupil (lens opacity) visible in bright light.
• Excessive squinting, tearing, or signs of eye pain (if uveitis or glaucoma develops).

Because Maltese are small and often live in tightly arranged homes, even partial vision loss can markedly change mobility and safety.

Diagnosis: what your veterinarian will check

A complete ophthalmic examination by your primary veterinarian or, ideally, a board-certified veterinary ophthalmologist (ACVO diplomate) will include:

• Neuro-ophthalmic exam and menace response, tracking, and pupillary light reflexes.
• Slit-lamp biomicroscopy and indirect ophthalmoscopy to assess the lens and retina.
• Tonometry (intraocular pressure) to screen for glaucoma.
• Fluorescein stain to rule out corneal ulceration.
• Ocular ultrasound if the opacity prevents retinal visualization.
• Electroretinography (ERG) is recommended when the fundus cannot be visualized to confirm retinal function before cataract surgery (ACVO guidance).
• Systemic screening: CBC, biochemistry, urinalysis to evaluate liver/kidney function and screen for [diabetes](https://seniorpet.org/knowledge/[beagle](https://seniorpet.org/knowledge/breed/beagle "Senior Beagle Health Guide")-diabetes "Diabetes Management in Senior Pets").
• Specific tests if comorbidities are suspected: bile acid or ammonia testing for portosystemic shunts, echocardiography for mitral valve disease evaluation, chest radiographs for tracheal collapse evaluation, dental exam/cleaning if severe dental disease is present.

Why these tests matter for Maltese:

• A portosystemic shunt or liver dysfunction alters drug metabolism and increases anesthetic risk.
• Mitral valve disease (MMVD) is common in small-breed seniors and may need cardiology stabilization prior to anesthesia (see ACVIM consensus on MMVD).
• Collapsed trachea and severe dental disease increase perioperative respiratory and infectious risks.
• White shaker syndrome (idiopathic tremor) may complicate recovery and postoperative behavior if the dog is on immunomodulatory drugs.

Table: Pre-operative tests and their importance for senior Maltese

| Test | Purpose | Relevance for Maltese with common comorbidities | |---|---:|---| | CBC/chem/UA | Assess systemic health, blood glucose, kidney/liver parameters | Identify diabetes (diabetic cataracts), liver disease (portosystemic shunt), anemia that increases anesthetic risk | | Bile acids/ammonia | Screen for portosystemic shunt | Portosystemic shunts are more common in toy breeds; affects anesthetic drug selection/dosing | | Echocardiogram (cardiology) | Detect mitral valve disease severity | Mitral valve disease (MMVD) influences perioperative fluid and drug choices | | Thoracic radiographs / airway exam | Assess for collapsed trachea, cardiac size | Collapsed trachea common in Maltese; planning for airway management | | Ocular ultrasound/ERG | Assess retina when lens blocks view | ERG required or strongly recommended to confirm retinal function before cataract surgery (ACVO guidance) | | Dental exam (with radiographs) | Identify periodontal infection or tooth abscess | Dental disease increases bacteremia risk and can complicate surgery; often addressed before or concurrent with surgery |

Treatment options

Treatment for cataracts in Maltese falls into three categories: medical stabilization, surgical removal (phacoemulsification with or without intraocular lens [IOL] implantation), and home/environmental management when surgery is not appropriate.

Medical management / stabilization

• Anti-inflammatory therapy: topical steroid or NSAID drops for uveitis control; systemic NSAIDs or corticosteroids may be used short-term under close supervision.
• Mydriatics (e.g., atropine) to relieve ciliary spasm and prevent synechiae when indicated.
• Manage pain and secondary glaucoma if present.
• Treat underlying systemic disease: stabilize diabetes, manage hepatic shunt or cardiac disease before considering surgery.

Medical therapy cannot reverse an established cataract; it only treats inflammation or secondary complications. In senior Maltese with advanced systemic illness (e.g., severe MMVD, uncontrolled portosystemic shunt, or severe pulmonary airway disease), medical management may be the only realistic option.

Surgical treatment — Phacoemulsification (lens removal)

• Phacoemulsification with IOL implantation is the standard of care for visually significant cataracts in dogs.
• Success depends on retinal function (ERG), absence of severe intraocular inflammation, and good systemic health to tolerate anesthesia.
• In Maltese, special preoperative planning is essential because of breed-associated risks:

- Cardiac evaluation and possibly cardiology clearance for dogs with MMVD. - Liver function testing and possible referral to internal medicine for shunt management. - Dental cleaning and treatment prior to or at the time of surgery to reduce the risk of bacteremia. - Airway assessment and anesthetic planning for dogs with collapsed trachea (use of smaller, padded ET tubes, careful positioning, humidified oxygen). - If the dog is on immunosuppressive therapy for white shaker syndrome, coordinate medication timing with the ophthalmologist and internist; immunosuppression increases infection risk.

Outcomes and prognosis:

• Phacoemulsification in dogs generally yields favorable visual outcomes when the retina is functional and comorbidities are managed. Many studies and clinical series report restoration of ambulatory vision in a high percentage of appropriately selected patients, with some variation by underlying disease and surgeon experience (ACVO literature and veterinary ophthalmology texts).
• Potential complications include persistent uveitis, glaucoma, retinal detachment, corneal ulcers, endophthalmitis, IOL luxation, and posterior capsule opacification. Early detection and aggressive management of complications improve long-term success.

Practical surgical considerations for Maltese owners:

• Costs in the United States and similar markets commonly range from approximately $2,000–$5,000 per eye (varies by geography, surgeon expertise, and required pre-op testing). Discuss exact quotes with a referral ophthalmologist.
• Expect pre-op assessment, surgery, hospitalization for 24–48 hours for pain control and monitoring, and multiple rechecks in the first 12 weeks post-op.
• Strict activity restriction and Elizabethan collar use post-op to prevent trauma to the eye.

How comorbidities common in Maltese change the plan

• Mitral Valve Disease (MMVD): Preoperative echocardiography is often recommended. Dogs with advanced MMVD may have increased anesthetic risk; however, many dogs with mild to moderate disease undergo successful cataract surgery with cardiology-guided anesthesia protocols (ACVIM consensus on MMVD).
• Portosystemic liver shunt: Significant hepatic dysfunction requires careful drug selection and may mandate addressing the shunt (surgery or medical management) before elective procedures. Drug dosing adjustments and perioperative supportive care are critical.
• Luxating patella: Small-breed joint disease makes handling and postoperative activity restriction more complex; physical support and safe flooring are recommended during recovery.
• Dental disease: Treat periodontal disease prior to or concurrent with surgery to reduce bacteremia risk. Many ophthalmic surgeons will not operate unless dental disease is controlled.
• Collapsed trachea: Refers to dynamic airway collapse common in toy breeds. Pre-op airway evaluation, humidified oxygen, gentle induction, and minimizing coughing/straining are important.
• White shaker syndrome: Dogs often receive immunosuppressive doses of corticosteroids or other medicines; these medications increase infection risk and may need adjustment around surgery in coordination with neurology/internal medicine and ophthalmology.

Home and day-to-day care for a blind or visually impaired Maltese

If cataract surgery is not elected or indicated, or while awaiting surgery, practical steps improve safety and quality of life:

• Create consistent, predictable pathways: keep furniture in the same places; use baby gates on stairs.
• Use rugs and non-slip mats so senior Maltese can feel textures underfoot.
• Keep food/water bowls and bedding in fixed locations.
• Use scent and sound cues: scented markers, mats with different textures, or a small bell on owner’s clothing during play.
• Avoid abrupt changes and introduce new obstacles slowly.
• Use a harness rather than a collar to reduce tracheal stress when walking.
• Provide adequate lighting during transitions; nightlights can help.
• Supervise stairs and consider a small pet ramp if stairs are problematic.
• Maintain regular dental care (home brushing, routine professional cleanings) to reduce systemic risk.
• Keep the vet and ophthalmologist informed if you notice signs of pain, increased redness, squinting, discharge, or sudden worsening of vision.

Postoperative home care if your Maltese has cataract surgery

• Strict confinement per your surgeon’s instructions; leash walks only.
• Administer topical medications (steroids/NSAIDs/antibiotics/atropine) exactly as prescribed. Missing doses increases the risk of inflammation and complications.
• Use the Elizabethan collar as directed to prevent rubbing or pawing at the eye.
• Watch for signs of complication: severe squinting, excessive tearing, cloudy/colored discharge, swelling, or sudden signs of vision loss in the other eye.
• Coordinate follow-up rechecks (typically 1 day, 1 week, 3–4 weeks, 6–8 weeks, and as advised) so early problems can be treated.
• Keep the dental and cardiac management in parallel—addressing those systems reduces long-term risk of ocular or systemic complications.

When to refer to a specialist

Refer your Maltese to an ACVO diplomate or a veterinary ophthalmology referral center if any of the following apply:

• Lens opacity blocks the fundus and you are considering cataract surgery (ERG required).
• Signs of severe uveitis, glaucoma, or active infection are present.
• Your Maltese has systemic comorbidities that require multi-disciplinary planning (cardiology, internal medicine, surgery).
• Multi-eye involvement with suspected hereditary cataracts in young dogs—genetic counseling may help breeders.

Referral ensures access to specialized diagnostic tools (ERG, ocular ultrasound) and surgeons experienced with the complications of toy-breed cataract cases.

Evidence-based notes and resources

• The American College of Veterinary Ophthalmologists (ACVO) and board-certified ophthalmologists recommend ERG when the retina cannot be assessed visually prior to cataract surgery; the ERG predicts retinal function and postoperative visual potential (ACVO practice guidance).
• The AAHA Anesthesia and Monitoring Guidelines emphasize individualized pre-anesthetic testing for senior patients and those with systemic disease (AAHA Anesthesia Guidelines).
• The ACVIM consensus on myxomatous mitral valve disease (MMVD) provides guidance on cardiac assessment and management prior to elective anesthesia and surgery (ACVIM consensus statement).
• Veterinary ophthalmology textbooks (e.g., Gelatt & Gilger, Veterinary Ophthalmology) summarize outcomes and complication rates for phacoemulsification; success rates are highest when retinal function is intact and systemic disease is controlled.

(References: ACVO clinical practice recommendations; AAHA Anesthesia Guidelines; ACVIM consensus statements; Veterinary Ophthalmology texts and peer-reviewed clinical series on phacoemulsification outcomes.)

Final practical checklist for Maltese owners considering cataract surgery

Obtain a full ophthalmic exam with an ACVO diplomate; request ERG if the retina cannot be visualized.

Perform systemic screening (CBC, chemistry, urinalysis, bile acids/ammonia if indicated).

Get cardiology input (echocardiography) if your Maltese has a heart murmur/known MMVD.

Treat dental disease before elective surgery.

Discuss airway strategy with the surgeon/anesthesia team if your dog has tracheal collapse.

Plan for multiple postoperative rechecks and strict [home care](https://seniorpet.org/knowledge/pillar/home-care-guide "Senior Pet Home Care Guide"); understand the financial and time commitment.

If surgery is not feasible, implement environmental modifications and medical management to preserve comfort and mobility.

Cataracts in the senior Maltese are manageable in many cases. With breed-appropriate preoperative assessment, coordination among specialists for comorbidities, and careful postoperative care, many Maltese regain useful vision and maintain a high quality of life. If surgery isn’t an option, thoughtful home adaptation and medical management can keep your Maltese safe and comfortable.