Entropion in Pigs: Inward-Rolling Eyelids, Pain & Treatment
- Entropion means the eyelid rolls inward so lashes and skin rub on the eye, causing pain, tearing, mucus, and squinting.
- Mini-pigs and potbellied pigs are commonly affected, especially young pigs with inherited facial shape issues and adults with heavy facial fat folds.
- Mild early cases may be managed temporarily with lubrication or eyelid tacking, but many pigs need a procedure to evert the lid and protect the cornea.
- See your vet promptly if your pig is keeping the eye closed, rubbing the face, or has a cloudy eye, green discharge, or a visible corneal ulcer.
What Is Entropion in Pigs?
Entropion is an eyelid problem where part or all of the eyelid rolls inward toward the eyeball. When that happens, eyelashes, skin, and facial hairs rub against the cornea. That friction is painful and can quickly lead to redness, tearing, mucus discharge, corneal scratches, ulcers, scarring, and vision loss if the eye is not protected.
In pigs, entropion is seen most often in mini-pigs and potbellied pigs. Some piglets are born with it or develop it very early, while older pigs may develop it later because of facial conformation or heavy fat folds around the eyes. VCA notes that entropion is one of the most common eye problems in mini-pigs, and Merck Veterinary Manual describes the same inward rolling process and the corneal irritation it causes across species.
For pet parents, the main takeaway is that this is not only a cosmetic issue. A pig with entropion may be uncomfortable every time it blinks. Early care can reduce pain and may prevent more serious corneal damage.
Symptoms of Entropion in Pigs
- Squinting or holding the eye partly closed
- Excess tearing or wet fur below the eye
- Stringy mucus or thicker eye discharge
- Frequent face rubbing on bedding, fencing, or with the feet
- Redness of the eye or skin around the eye
- Visible inward-rolled eyelid or lashes touching the eye
- Cloudy, blue, or dull-looking cornea
- Eye kept tightly shut, marked pain, or sudden worsening
Mild entropion may start with tearing and occasional squinting, but the condition can escalate fast if the cornea is being rubbed every time your pig blinks. See your vet immediately if the eye looks cloudy, the pig will not open it, discharge becomes thick or green, or you notice a visible ulcer, white spot, or injury. Those signs can mean the cornea is already damaged and needs urgent treatment.
What Causes Entropion in Pigs?
Entropion in pigs can be congenital or acquired. Congenital cases are linked to facial shape and eyelid conformation, which is why Vietnamese potbellied pigs and mini-pigs are often mentioned as higher-risk groups. In newborn piglets, dehydration can also make the eye sink slightly into the orbit, which can encourage the eyelid to roll inward.
Acquired entropion develops later and is often related to anatomy and body condition. VCA reports that in mini-pigs, obesity and large facial fat folds are common contributors. Those folds can push tissue around the eye inward and change how the eyelid sits against the cornea.
Pain can also create a cycle. Merck notes that severe squinting from eye pain can cause spastic entropion, where the eyelid rolls inward because the eye is already irritated. Scarring, previous trauma, or other eye disease may also change eyelid position. That is why your vet will want to look for both the entropion itself and any underlying problem that may be making it worse.
How Is Entropion in Pigs Diagnosed?
Your vet usually diagnoses entropion with a hands-on eye exam. They will look at eyelid position, whether lashes or skin are touching the cornea, and whether the pig is squinting or painful. In some pigs, especially those that are stressed or resist handling, sedation may be needed for a safe and accurate exam.
The next step is checking how much damage the eyelid has already caused. Merck notes that fluorescein stain is used to identify corneal epithelial injury and ulcers. Your vet may also use magnification, evaluate tear production, and measure eye pressure if glaucoma or other eye disease is a concern. Referral to a veterinary ophthalmologist may be helpful if the anatomy is complex, the cornea is ulcerated, or surgery is being considered.
Diagnosis is also about ruling out look-alike problems. Distichiasis, trauma, foreign material, conjunctivitis, and corneal ulcers from other causes can all make a pig squint and tear. Because treatment choices depend on the exact cause and severity, it is important not to assume every watery eye is entropion.
Treatment Options for Entropion in Pigs
Spectrum of Care means you have options. Here are treatment tiers at different price points.
Budget-Conscious Care
- Veterinary exam and basic eye assessment
- Topical lubricant to reduce friction on the cornea
- Treatment of dehydration in newborn piglets if present
- Careful monitoring for ulceration or worsening pain
- In very young piglets, repeated manual eversion only if your vet specifically recommends and demonstrates it
Recommended Standard Treatment
- Exam with fluorescein stain and other eye testing as needed
- Sedation for a safer eye exam in many pigs
- Temporary eyelid tacking sutures to roll the lid outward
- Topical medication if corneal irritation or ulceration is present
- Recheck visit to confirm the eyelid stays everted and the cornea is healing
Advanced / Critical Care
- Comprehensive eye exam, often with ophthalmology referral
- Pre-anesthetic blood work and general anesthesia
- Permanent surgical correction of the eyelid
- Facial fold reduction or related soft tissue surgery when heavy periocular fat contributes
- Treatment of corneal ulceration, infection, or scarring
- Post-op pain control, eye medications, and follow-up visits
Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.
Questions to Ask Your Vet About Entropion in Pigs
Bring these questions to your vet appointment to get the most out of your visit.
- Is this true entropion, or could another eye problem be causing the squinting and discharge?
- Has the cornea been scratched or ulcerated yet, and did fluorescein stain show any damage?
- Is my pig a candidate for temporary tacking, or is permanent surgery more likely to help?
- If facial fat folds are contributing, how much would weight management change the outlook?
- Will my pig need sedation or anesthesia for the exam or procedure, and what monitoring will be used?
- What medications are needed after treatment, and how often will they need to be given?
- What signs at home would mean the eye is getting worse and needs urgent recheck?
- What is the expected cost range for exam, rechecks, and possible surgery in my area?
How to Prevent Entropion in Pigs
Not every case can be prevented, especially when a pig is born with eyelid or facial conformation that predisposes it to entropion. Still, there are practical ways to lower risk and catch problems early. In mini-pigs, one of the biggest preventive steps is maintaining a healthy body condition. VCA specifically links obesity and heavy facial folds to entropion in adult mini-pigs.
For piglets, prompt attention to hydration, nursing, and early eye changes matters. If a newborn has squinting, tearing, or a visibly rolled eyelid, early veterinary guidance may prevent corneal injury. Breeding decisions also matter. Because congenital entropion can have a hereditary component, affected pigs should be discussed carefully with your vet before being used for breeding.
At home, make eye checks part of routine care. Look for tearing, mucus, redness, face rubbing, or a pig that seems light-sensitive. Early treatment is often less invasive than waiting until the cornea is ulcerated. If your pig has already had entropion, follow your vet's recheck plan closely, especially after tacking or surgery.