Quick answer: Entropion in dogs is an eyelid that rolls inward, so the fur and lid margin rub directly on the cornea. It is a structural problem, not an infection, and no drop, rinse, or supplement can correct it — surgery is the only definitive fix. The urgent part is what the rubbing causes: chronic pain, corneal ulcers, and pigment that can permanently cloud vision.
Owners usually notice the symptoms long before they notice the eyelid. A dog squints on one side for weeks, tears run down the face, and topical treatments help for a few days before everything comes back. That relapsing pattern is the signature of a mechanical problem.
What entropion actually is
The eyelid margin should sit flat against the eye with the lashes and haired skin pointing away from it. In entropion, the margin turns inward, and haired skin sweeps the cornea with every blink — thousands of times a day. The cornea carries one of the densest sensory nerve supplies in the body, which is why affected dogs are in real discomfort rather than merely watery-eyed.
Two broad forms exist. Primary (developmental) entropion reflects inherited eyelid and skull conformation, and it shows up in young dogs — often before the first birthday. Secondary (spastic) entropion is different: a painful eye squeezes shut, and the sustained blepharospasm pulls a normal eyelid inward. That distinction matters clinically, because spastic entropion can resolve once the underlying pain is treated, while primary entropion will not.
Breeds that carry the risk
Chow Chows, Shar Peis, Bulldogs, Bullmastiffs, Rottweilers, Great Danes, Saint Bernards, Labrador Retrievers, Pugs, and Shih Tzus are all overrepresented. In a surgical series of 311 eyes corrected for lower-lid entropion, Shar Pei, Rottweiler, Bull Mastiff, and Labrador Retriever were the most common canine breeds presented (Read & Broun, Veterinary Ophthalmology, 2007).
Signs of entropion in dogs
- Persistent squinting or a partly closed eye, often worse in bright light
- Constant tearing and wet, stained fur below the eye
- Redness of the white of the eye and the inner lid
- Pawing or rubbing the face on furniture and carpet
- Thick mucus in the corner despite regular cleaning
- An eyelid that visibly rolls in when you look at the margin in good light
- A cloudy, blue-grey, or brown-tinted area on the cornea in longstanding cases
Squinting deserves particular attention: it is the most reliable outward sign of ocular pain in dogs, and it is why a dog squinting one eye is never something to watch and wait on. If the eye is also watering constantly, our guide to dog watery eyes covers the drainage side of the picture.
Why entropion is more than a cosmetic problem
Continuous corneal abrasion produces two well-documented consequences.
Corneal ulceration. Rubbing breaks the corneal epithelium. In the Shar Pei series of 27 dogs treated with the Stades forced-granulation technique, 13 of 54 eyes already had a corneal ulcer at presentation, alongside keratitis, blepharospasm, enophthalmos, and third-eyelid protrusion in every dog (Asti et al., New Zealand Veterinary Journal, 2020). An ulcer is a same-day veterinary problem — see our guide to dog eye ulcer for what that involves.
Pigmentary keratitis. Chronic irritation causes the cornea to lay down brown pigment that does not reverse. In a study of 210 UK Pugs, pigmentary keratitis was found in 369 of 420 eyes (87.8%), and its detection was significantly associated with medial entropion of the lower eyelid; severity of pigmentation tracked with the grade of that entropion (Maini et al., BMC Veterinary Research, 2019). Pigment that reaches the visual axis reduces vision permanently.
That is the honest reason to treat entropion early rather than manage it indefinitely with wipes and drops.
How veterinarians diagnose it
A diagnosis takes an eye exam, not imaging. The veterinarian assesses eyelid conformation, then stains the cornea with fluorescein to look for ulceration, and often applies a drop of topical anesthetic. That last step is the diagnostic pivot: if the eyelid rolls back out once the pain is numbed, the entropion is spastic and secondary to something else. If it stays rolled in, it is anatomical.
Treatment: what works and what does not
| Approach | What it does | Corrects the eyelid? |
|---|---|---|
| Hotz–Celsus surgery (± lateral wedge) | Removes a crescent of skin to evert the lid margin | Yes — definitive |
| Temporary tacking sutures (puppies) | Holds the lid out while the skull matures | Sometimes; often a bridge to surgery |
| Hyaluronic acid subdermal filler | Everts the lid non-surgically; temporary | Partially, for a limited period |
| Antibiotic or lubricant drops | Treats the ulcer or protects the surface | No |
| Eye rinses and hygiene products | Removes debris and discharge around a normal eye | No |
Surgical outcomes are good. The combined Hotz–Celsus and lateral wedge technique corrected 94.2% of 311 eyes with a single procedure (Read & Broun, 2007). For young dogs, a 2024 JAVMA retrospective of 116 dogs found no statistically significant difference in recurrence between eyes operated at maturity (6/75, 8%) and juvenile eyes (10/79, 12.7%), and temporary tacking alone resolved 36.6% of 71 eyes — which is why waiting until a dog turns one is no longer considered necessary (Lavallée et al., JAVMA, 2024).
Where daily eye care fits — and where it does not
No hygiene product treats entropion. What a rinse does is keep the ocular surface clear of the discharge, dust, and debris that a chronically irritated eye produces, and keep the fur below the eye from staying wet — both before surgery and during recovery, on a veterinarian's advice.
Our gentle daily dog eye drops are formulated for that narrow job on a normal, uninjured eye: pH-neutral at 7.0–7.2 so they do not sting, with sodium hyaluronate at 0.05%, and no alcohol, bleaching agents, or fragrance — unlike many drugstore tear-stain removers. For longer-term nutritional support of the eye, our plant-based eye and vision support drops are a supplement, not a medication. Neither product treats an ulcer, an infection, or a structural eyelid defect, and neither replaces anything your veterinarian prescribes. Both ship free worldwide.
Never use human redness-relief drops such as those containing tetrahydrozoline or naphazoline: they mask inflammation, are toxic if swallowed, and can delay treatment of a painful eye. Never apply a leftover steroid drop to an eye that might be ulcerated.
When to call the vet today
- The eye is held shut, or the dog flinches when you approach the face
- A visible haze, dull spot, or crater on the cornea
- Green or yellow discharge, or discharge that has increased suddenly
- Brown or blue discoloration spreading across the cornea
- Any inward-rolled eyelid in a puppy — early tacking preserves the cornea
Related reading: the warning signs of a dog eye infection, why are my dog's eyes red, and our complete guide to dog eye health. You can also browse our full dog ear and eye care range or start from the Pure Majesty Pets home page.
Frequently asked questions
Can entropion in dogs go away on its own?
Spastic entropion caused by a painful eye can resolve once the underlying pain is treated. Primary, conformational entropion does not resolve on its own and requires surgical correction.
How much does entropion surgery cost for a dog?
Cost varies widely by region, whether one or both eyes are involved, and whether a general practitioner or a board-certified veterinary ophthalmologist performs it. Ask your clinic for a written estimate that includes anesthesia, and check whether your pet insurance treats it as a congenital condition.
Is entropion painful for dogs?
Yes. Hair and lid margin abrading a densely innervated cornea causes ongoing pain, which is why affected dogs squint, tear, and rub their face.
At what age should entropion be repaired?
Temporary tacking is often used in young puppies while facial conformation matures. Research published in 2024 found no significant increase in recurrence when definitive surgery was performed before one year of age, so timing is a conversation to have with your veterinarian rather than a fixed rule.
Scientific References
- Read RA, Broun HC. Entropion correction in dogs and cats using a combination Hotz-Celsus and lateral eyelid wedge resection: results in 311 eyes. Veterinary Ophthalmology. 2007;10(1):6-11. PMID 17204122
- Lavallée G, Curto EM, Gratzek AT. Long-term success rate of entropion surgery is equivalent in juvenile and adult dogs. Journal of the American Veterinary Medical Association. 2024;262(2):1-5. PMID 37562785
- Asti M, Nardi S, Barsotti G. Surgical management of bilateral, upper and lower eyelid entropion in 27 Shar Pei dogs, using the Stades forced granulation procedure of the upper eyelid only. New Zealand Veterinary Journal. 2020;68(2):112-118. PMID 31738860
- Maini S, Everson R, Dawson C, Chang YM, Hartley C, Sanchez RF. Pigmentary keratitis in pugs in the United Kingdom: prevalence and associated features. BMC Veterinary Research. 2019;15(1):384. PMID 31666065
- McDonald JE, Knollinger AM. The use of hyaluronic acid subdermal filler for entropion in canines and felines: 40 cases. Veterinary Ophthalmology. 2019;22(2):105-115. PMID 29520917
Veterinary disclaimer: this article is educational and does not replace veterinary examination, diagnosis, or treatment. Entropion is diagnosed and corrected by a licensed veterinarian. If your dog is squinting, in pain, or has visible corneal changes, contact your veterinarian or an emergency animal hospital the same day.