Entropion in Dogs - Symptoms, Diagnosis & Treatment

Entropion is a condition in which part or all of a dog's eyelid rolls inward, causing the fur-covered skin and eyelashes to rub directly against the surface of the eye. This persistent friction leads to pain, corneal damage, and — if left untreated — potential vision loss. Entropion is one of the most common eyelid abnormalities in dogs and can affect one or both eyes, with surgical correction offering an excellent long-term outcome in the majority of cases.

> Disclaimer: This article is intended for educational purposes only and does not replace professional veterinary advice. If you suspect your dog has entropion or any eye condition, consult a licensed veterinarian or veterinary ophthalmologist promptly.

What Is Entropion?

In a healthy dog, the eyelids rest smoothly against the surface of the eye, protecting the cornea while allowing the tear film to spread evenly with each blink. In entropion, the eyelid margin — most often the lower lid, though the upper lid or both can be affected — folds or rolls inward toward the eyeball. When this happens, the haired outer surface of the eyelid and the eyelashes (cilia) come into direct, constant contact with the cornea and conjunctiva.

This mechanical irritation sets off a cycle of damage: the corneal epithelium (the outermost protective layer of the eye) is repeatedly abraded, triggering inflammation, excessive tearing, mucoid discharge, and reflex blepharospasm (squinting). Over time, chronic corneal trauma can progress to corneal ulceration, scarring, pigmentation, vascularization, and in severe cases, corneal perforation and loss of the eye.

Entropion can be classified by its underlying cause:

• Developmental (primary) entropion — Genetically influenced, related to breed-specific facial conformation. This is the most common form.
• Spastic entropion — Secondary to pain from another eye condition (e.g., corneal ulcer, uveitis), causing the muscles around the eye to spasm and pull the lid inward.
• Cicatricial entropion — Caused by scar tissue from previous trauma, surgery, or chronic inflammation that contracts and distorts the eyelid margin.
• Involutional (senile) entropion — Occurs in older dogs due to age-related loss of muscle tone and orbital fat, allowing the lid to roll inward.

Symptoms of Entropion in Dogs

The signs of entropion can range from subtle discomfort to obvious distress, depending on severity and duration. Owners should familiarize themselves with the full spectrum of symptoms.

Early Signs

• Excessive tearing (epiphora) — Wet, damp fur below the eye; tear staining on light-colored dogs
• Squinting or holding the eye partially closed (blepharospasm) — Often worse in bright light or wind
• Frequent blinking — More than normal, sometimes rapid
• Mild redness around the eye or on the inner eyelid (conjunctival hyperemia)
• Rubbing or pawing at the face or eyes
• Slight mucoid discharge — Clear to whitish in the corner of the eye

Progressive Symptoms

• Increased or thickened discharge — Turning from clear to yellow-green, suggesting secondary bacterial infection
• Visible inward rolling of the eyelid — The eyelid margin is no longer visible in its normal position
• Corneal cloudiness or haziness — Indicating corneal edema or early ulceration
• Blood vessel growth across the cornea (neovascularization) — A sign of chronic irritation
• Dark pigment deposits on the cornea (corneal pigmentation) — The body's attempt to protect damaged tissue
• Swelling of the eyelid or surrounding tissue
• Behavioral changes — Reluctance to play, decreased activity, light avoidance (photophobia)

Emergency Signs

Seek immediate veterinary care if you observe any of the following:

• Sudden, severe squinting with the eye held completely shut
• Visible depression or divot on the corneal surface — Suggesting a deep corneal ulcer
• Green or yellow ocular discharge — Indicating possible infected ulcer
• Cloudy, white, or blue appearance to the entire eye
• Blood visible in or around the eye
• Sudden apparent blindness — Bumping into objects, reluctance to navigate familiar spaces
• Rupture or bulging of the eye — A veterinary emergency requiring immediate intervention

What Causes Entropion in Dogs?

Genetics and Conformation

The primary driver of entropion in dogs is genetics. Breeds with specific facial structures — heavy facial folds, deep-set eyes, prominent brow ridges, loose facial skin, or naturally tight eyelid openings — are predisposed because their anatomy places abnormal forces on the eyelid margins. Entropion in these breeds is considered hereditary, and affected dogs should not be bred.

Age-Related Factors

• Puppies and young dogs — Developmental entropion typically becomes apparent by six months to one year of age as the skull and facial structures mature. Some puppies with mild entropion may outgrow it as their head grows, which is why many veterinary ophthalmologists recommend waiting until skeletal maturity before performing permanent surgical correction.
• Senior dogs — Older dogs may develop involutional entropion as the muscles and connective tissues around the orbit weaken with age, and orbital fat pads atrophy, causing the eye to sink deeper into the socket.

Secondary Causes

• Ocular pain from any source — corneal ulcers, foreign bodies, conjunctivitis, uveitis, glaucoma — can cause spastic entropion through reflex muscle contraction.
• Trauma or scarring to the eyelid from injuries, burns, or previous surgeries can distort the lid architecture.
• Chronic blepharitis (eyelid inflammation) can lead to structural changes over time.
• Rapid weight loss in any dog can reduce periorbital fat, mimicking the mechanism of involutional entropion.

Environmental Factors

While entropion itself is not caused by environmental factors, dust, wind, allergens, and dry air can exacerbate symptoms and accelerate corneal damage in dogs with existing entropion.

Breeds Most at Risk

Entropion has a strong breed predisposition. The following breeds are most commonly affected, along with the conformational reasons:

• Shar-Pei — Excessive facial skin folds; one of the most severely affected breeds, often presenting with entropion as young puppies
• English Bulldog — Brachycephalic skull, prominent skin folds, shallow orbits
• Chow Chow — Deep-set eyes, heavy brow, and abundant facial skin
• Rottweiler — Deep-set eyes with prominent brow ridges
• Labrador Retriever — One of the most commonly affected large breeds; typically lower-lid entropion
• Golden Retriever — Similar to Labradors in presentation
• Great Dane — Large skull with loose facial skin, particularly around the lower lids
• Saint Bernard — Excessive facial skin, deep facial folds, and heavy jowls
• Mastiff breeds (English Mastiff, Bullmastiff, Neapolitan Mastiff) — Extreme facial skin laxity
• Bloodhound — Extremely loose facial and eyelid skin
• Cocker Spaniel — Predisposed to lower-lid entropion
• Poodle (Miniature and Toy) — Tight eyelid conformation on a small skull
• Pug — Brachycephalic conformation with shallow orbits and prominent eyes
• Bernese Mountain Dog — Lower-lid laxity with medial entropion

Mixed-breed dogs can also develop entropion, especially if they carry conformational traits from predisposed breeds.

How Entropion Is Diagnosed

Initial Veterinary Examination

Diagnosis of entropion is primarily clinical — your veterinarian can usually identify it through a thorough ophthalmic examination. The process typically involves:

1. History taking — Your vet will ask when symptoms started, whether they have worsened, and whether one or both eyes are affected.
2. Visual inspection — Observing the eyelid position, degree of inversion, and which portion of the lid is affected (upper, lower, medial, lateral, or a combination).
3. Assessment of blepharospasm — Determining whether squinting is contributing to or worsening the inversion. A topical anesthetic (proparacaine) may be applied to the eye to eliminate pain-induced spasm and reveal the true degree of anatomical entropion.

Ophthalmic Testing

1. Fluorescein stain test — An orange dye is applied to the corneal surface and examined under a blue/cobalt light. Areas where the dye is retained indicate corneal ulceration or erosion. This is a critical step to assess corneal damage. Cost: typically included in the exam or $25–$50 as a standalone test.
2. Schirmer tear test (STT) — A small paper strip is placed in the lower eyelid to measure tear production, ruling out concurrent dry eye (keratoconjunctivitis sicca). Cost: $25–$50.
3. Tonometry — Measurement of intraocular pressure to rule out glaucoma, which could be a secondary cause of pain and spasm. Cost: $40–$75.
4. Slit-lamp biomicroscopy — A magnified examination of the cornea, anterior chamber, lens, and eyelid structures to assess the full extent of damage.

Specialist Referral

For complex or severe cases, your primary veterinarian may refer you to a board-certified veterinary ophthalmologist (Diplomate of the American College of Veterinary Ophthalmologists, DACVO). A specialist consultation typically costs $150–$350 and provides a detailed surgical plan tailored to your dog's specific anatomy.

In most cases, advanced imaging (CT, MRI) is not required for entropion diagnosis. However, if an underlying orbital or neurological condition is suspected, imaging may be recommended.

Treatment Options for Entropion

Treatment depends on the type, severity, the dog's age, and whether corneal damage is present.

Medical Management

Medical treatment alone does not correct anatomical entropion but plays an important role in:

• Managing symptoms while awaiting surgery or skeletal maturity in puppies
• Treating secondary corneal damage — Antibiotic eye drops or ointments (e.g., tobramycin, erythromycin, or triple antibiotic) are prescribed for corneal ulcers or bacterial conjunctivitis
• Lubricating the eye — Artificial tears or ophthalmic lubricant gels reduce friction and protect the cornea
• Controlling pain and inflammation — Topical NSAIDs (e.g., diclofenac, ketorolac) or systemic pain medications
• Temporary tacking (eyelid tacking) — In puppies too young for permanent surgery, temporary sutures are placed to evert (roll outward) the eyelid. This is a quick procedure, often done under sedation, and the sutures remain in place for 2–4 weeks. Cost: $150–$400. Multiple tacking procedures may be needed as the puppy grows.

Surgical Options

Surgery is the definitive treatment for entropion and has a high success rate. The most common procedures include:

• Hotz-Celsus procedure — The gold standard. An elliptical (crescent-shaped) section of skin and orbicularis muscle is removed from the affected eyelid, and the wound is sutured closed. This effectively shortens and tightens the lid, rotating it outward to its normal position. The procedure is performed under general anesthesia and takes 15–30 minutes per eye. Success rate: approximately 90–95%.

• Modified Hotz-Celsus with additional techniques — For more complex cases, the basic procedure may be combined with lateral canthoplasty (tightening the outer corner of the eye), medial canthoplasty, or a Y-to-V plasty to address specific areas of entropion.

• Stades procedure (combined entropion-ectropion correction) — Used in breeds with concurrent entropion and ectropion (diamond eye), such as Saint Bernards and Great Danes.

• Brow lift or forehead tacking — In heavily wrinkled breeds like the Shar-Pei, excess brow skin may be removed or tacked upward to relieve downward pressure on the upper lid.

• Overcorrection (removing too much tissue) can result in ectropion (outward rolling of the lid), which creates a new set of problems. An experienced surgeon will err on the side of conservative correction, with the option of a second procedure if needed.
• Most dogs require an Elizabethan collar (cone) for 10–14 days post-surgery to prevent self-trauma while sutures heal.
• Sutures are typically removed at 10–14 days.

Alternative and Supportive Therapies

• Hyaluronic acid filler injections — A newer, less invasive approach where a filler substance is injected beneath the eyelid skin to evert the lid. Results are temporary (weeks to months) and are used primarily as a bridge to surgery or in dogs that are poor surgical candidates.
• Botulinum toxin (Botox) injections — Rarely used but has been described in cases of spastic entropion to relax the orbicularis oculi muscle.
• Cryotherapy — Controlled freezing of the eyelid tissue to induce scar contraction and lid eversion; occasionally used as an adjunct.

At-Home Care

Before and after surgery, owners can support their dog's comfort and healing:

• Keep the eye clean — Gently wipe away discharge with a warm, damp cloth or sterile saline-moistened gauze, moving from the inner corner outward.
• Administer prescribed medications consistently — Eye drops and ointments should be applied on schedule. Apply drops before ointments if both are prescribed.
• Use the Elizabethan collar at all times post-surgery until your veterinarian clears its removal.
• Limit activity — Avoid rough play, swimming, and dusty environments during the healing period.
• Monitor the surgical site — Watch for excessive swelling, bleeding, suture dehiscence (opening), or signs of infection (increasing redness, foul odor, purulent discharge).
• Attend all follow-up appointments — Typically scheduled at 3–5 days and 10–14 days post-surgery.

Prognosis and Life Expectancy

The prognosis for dogs with entropion is excellent when the condition is identified early and treated appropriately. Key points:

• Surgical correction resolves the problem permanently in the vast majority of cases. Approximately 90–95% of dogs require only a single surgery, though some cases — especially in breeds with complex facial anatomy — may need a second (revision) procedure.
• Corneal damage that occurred before treatment is the primary factor affecting long-term visual outcome. Superficial ulcers typically heal within 5–7 days after the source of irritation is removed. Corneal scarring and pigmentation may partially or fully resolve over weeks to months, though dense scarring can be permanent.
• Entropion does not affect life expectancy. It is a structural eyelid condition, not a systemic disease. Dogs that receive timely surgical correction go on to live normal, comfortable lives with full visual function in the affected eye(s).
• Untreated entropion will not resolve on its own in adult dogs and will progressively worsen, potentially leading to chronic pain, corneal perforation, endophthalmitis (intraocular infection), and loss of the eye.

Prevention

Because the most common form of entropion is genetic and conformational, prevention strategies focus on responsible breeding and early detection:

• Responsible breeding practices — Dogs diagnosed with developmental entropion should be removed from breeding programs. Breed clubs and registries for high-risk breeds should prioritize selection for moderate facial conformation and healthy eyelid structure.
• CERF/OFA eye examinations — The Canine Eye Registration Foundation (now managed by the OFA) provides standardized eye examinations by board-certified ophthalmologists. Breeding dogs from predisposed breeds should have annual eye certifications.
• Early puppy screening — In high-risk breeds (especially Shar-Peis), puppies should be examined within the first few weeks of life for signs of entropion. Early tacking can prevent corneal damage during the critical growth period.
• Prompt treatment of eye conditions — Addressing corneal ulcers, conjunctivitis, and other painful eye conditions quickly can prevent spastic entropion from developing.
• Weight management in senior dogs — Maintaining healthy body condition helps preserve periorbital fat pads and may reduce the risk of involutional entropion.
• Selecting a reputable breeder — If purchasing a puppy from a predisposed breed, choose a breeder who screens for eye conditions and can provide OFA eye clearances for both parents.

Cost of Treatment

Understanding the financial commitment helps owners plan for their dog's care:

| Service | Estimated Cost | |---|---| | Initial veterinary eye exam | $50–$150 | | Fluorescein stain test | $25–$50 | | Schirmer tear test | $25–$50 | | Tonometry | $40–$75 | | Specialist ophthalmology consultation | $150–$350 | | Temporary eyelid tacking (per procedure) | $150–$400 | | Entropion surgery — general practice (per eye) | $500–$1,500 | | Entropion surgery — specialist (per eye) | $1,000–$3,000 | | Post-operative medications | $50–$150 | | Follow-up examinations | $50–$100 each | | Elizabethan collar | $10–$25 | | Total estimated range (one eye, including diagnostics) | $800–$3,500+ |

Costs vary significantly based on geographic location, the severity of the condition, whether a specialist is involved, and whether corneal damage requires additional treatment. Pet insurance may cover entropion surgery if the policy was purchased before the condition was diagnosed and the plan does not exclude hereditary or congenital conditions — check your policy carefully.

Frequently Asked Questions

Can entropion go away on its own?

In very young puppies, mild entropion may improve as the skull and facial structures grow and mature. However, this is not guaranteed, and waiting without veterinary supervision risks corneal damage. In adult dogs, anatomical entropion does not resolve on its own and requires surgical correction.

Is entropion surgery painful for my dog?

The surgery is performed under general anesthesia, so your dog feels nothing during the procedure. Post-operative discomfort is typically mild and well-managed with prescribed pain medications. Most dogs are noticeably more comfortable within 24–48 hours of surgery because the chronic irritation from the rolled eyelid has been eliminated.

How long does recovery take after entropion surgery?

Most dogs heal within 10–14 days, at which point sutures are removed. Swelling and bruising around the eye are normal in the first few days and gradually resolve. Dogs should wear an Elizabethan collar and have restricted activity during this period. Full cosmetic and functional results are typically apparent within 4–6 weeks.

Can entropion come back after surgery?

Recurrence is uncommon but possible, occurring in roughly 5–10% of cases. It is more likely in breeds with extreme facial conformation (e.g., Shar-Peis, Mastiffs) or if the initial surgery was too conservative. A revision surgery can address residual or recurrent entropion.

My dog has entropion in both eyes — is that normal?

Yes, bilateral (both eyes) entropion is common, especially in predisposed breeds. Both eyes can be corrected during the same anesthetic episode, which reduces overall cost and stress for the dog.

At what age should my puppy have entropion surgery?

Most veterinary ophthalmologists recommend waiting until the dog has reached skeletal maturity — typically around 6–12 months of age, depending on the breed. This allows the head and facial structures to finish growing, ensuring the most accurate surgical correction. In the interim, temporary eyelid tacking and medical management protect the cornea.

Does pet insurance cover entropion surgery?

Many pet insurance plans cover entropion surgery, provided the policy was in place before the condition was diagnosed or showed clinical signs and the plan does not specifically exclude hereditary or congenital conditions. It is essential to read your policy's fine print and contact your insurer to confirm coverage before scheduling surgery.

Should I breed a dog that has had entropion?

No. Because developmental entropion has a strong genetic component, affected dogs should be spayed or neutered and removed from breeding programs. Breeding dogs with entropion perpetuates the condition in future generations and contributes to preventable suffering. Responsible breeders screen their breeding stock through OFA eye certifications and select for healthy eyelid conformation.