Cherry eye in dogs occurs when the tear-producing gland of the third eyelid slips out of its normal position, creating a pink or red swelling near the inner corner of the eye. It is particularly common in certain breeds and younger dogs. Although cherry eye is usually treatable, prompt veterinary attention is important because the affected gland plays a vital role in keeping the eye healthy and comfortable.

Discovering an unusual lump in your dog's eye can be alarming, especially if it appears suddenly. The good news is that most dogs have a favourable outcome following appropriate treatment. However, ignoring the condition can increase the risk of inflammation, reduced tear production and long-term eye problems.

This guide explains how to recognise cherry eye, what causes it, which breeds are most susceptible and what to expect from treatment and recovery.

What Is Cherry Eye in Dogs?

Dogs have three eyelids rather than two. Alongside the upper and lower eyelids, they have a third eyelid, also called the nictitating membrane, which sits near the inner corner of the eye.

The third eyelid helps protect the surface of the eye and contains an important tear-producing gland. This gland normally remains hidden beneath the eyelid, held in place by supporting tissues.

Cherry eye develops when those supporting tissues fail to keep the gland in its usual position. The gland moves forwards and becomes visible as a rounded pink or red swelling.

The condition is medically known as prolapse of the third-eyelid gland.

Although the swelling can look dramatic, cherry eye does not automatically mean the eye is permanently damaged. Early diagnosis and appropriate treatment offer a good chance of preserving normal tear production and eye comfort.

What Does Cherry Eye Look Like in Dogs?

The most recognisable sign of cherry eye is a smooth, fleshy, pink or red lump appearing near the corner of the eye closest to the nose.

The swelling may be small and only occasionally visible, or large enough to become immediately noticeable.

What Are the Symptoms of Cherry Eye?

Common signs include:

• A rounded pink or red swelling near the inner corner of the eye.
• Redness or inflammation around the third eyelid.
• Increased watering or eye discharge.
• Occasional blinking or squinting.
• Rubbing the face or pawing at the affected eye.
• Visible irritation or discomfort.
• A swelling that appears, disappears and later returns.

Some dogs show little obvious discomfort, particularly when the prolapse first develops. Others experience irritation because the exposed gland becomes inflamed.

Cherry eye can affect one eye or both eyes. If only one eye is affected initially, the other may develop the condition later.

Is Cherry Eye Painful for Dogs?

Cherry eye is not always severely painful, but the exposed gland can become irritated, swollen and uncomfortable.

Persistent squinting, significant pain, cloudiness or an eye that remains closed may indicate an additional problem, such as a corneal ulcer. These symptoms require urgent veterinary assessment rather than assuming cherry eye is the only cause.

What Causes Cherry Eye in Dogs?

Cherry eye is thought to develop primarily because the connective tissues that normally anchor the third-eyelid gland are too weak to hold it securely in place.

When these tissues fail, the gland can move forwards and become exposed.

Several factors may contribute to the likelihood of prolapse:

• Inherited anatomical characteristics: Some breeds appear predisposed to weaker gland-supporting tissues.
• Age: Cherry eye frequently develops in puppies and young adult dogs.
• Facial anatomy: Certain skull and eyelid shapes may contribute to susceptibility.
• Third-eyelid abnormalities: Abnormal cartilage can sometimes occur alongside gland prolapse.

Inflammation may make an already prolapsed gland appear larger and redder, but it is not necessarily the original cause.

Cherry eye is not usually caused by poor hygiene, an unsuitable diet or anything an owner has done wrong.

Is Cherry Eye Hereditary in Dogs?

There is strong evidence of breed-related susceptibility, suggesting that inherited anatomical characteristics contribute to cherry eye.

However, the precise genetic mechanisms are not fully understood, and there is no widely established DNA test that can reliably predict cherry eye in individual dogs.

The condition may occur in several dogs from the same family, but this does not mean inheritance follows a simple single-gene pattern.

Responsible breeders should consider family history and avoid deliberately breeding from dogs affected by significant hereditary eye problems without appropriate veterinary and breed-specific advice.

Prospective puppy owners can ask breeders whether cherry eye or other eye disorders have occurred in the parents or previous litters.

Which Dog Breeds Are Most Prone to Cherry Eye?

Cherry eye can affect any dog, including crossbreeds, but certain breeds have a recognised predisposition.

Bulldogs and Flat-Faced Breeds

English Bulldogs, French Bulldogs, Pugs and Boston Terriers are among the breeds associated with cherry eye.

Their facial anatomy can also increase susceptibility to other eye problems, making prompt investigation particularly important.

Our guide to common health problems in French Bulldogs explains other eye conditions, including corneal ulcers and dry eye, that owners should recognise.

Cocker Spaniels and Beagles

Cocker Spaniels and Beagles are also recognised as susceptible breeds. Cherry eye often appears during puppyhood or early adulthood.

Other Susceptible Breeds

Additional breeds associated with cherry eye include Shih Tzus, Lhasa Apsos, Poodles, Great Danes, Newfoundlands, Bloodhounds and some Mastiff breeds.

Crossbreeds may also develop eye problems associated with their ancestry. Our guide to common health issues in Cockapoos discusses the importance of parental health history and recognising changes in eye appearance.

Breed predisposition does not mean every dog of that breed will develop cherry eye.

How Do Vets Diagnose Cherry Eye?

Cherry eye is often diagnosed during a veterinary eye examination because the appearance and location of the prolapsed gland are characteristic.

Your vet will examine the swelling and assess the surrounding eye structures to rule out other conditions.

Depending on the findings, additional tests may include:

• Schirmer tear testing: Measures tear production to check for dry eye.
• Fluorescein staining: Helps identify damage or ulcers on the cornea.
• Third-eyelid examination: Checks for abnormal cartilage or other structural problems.

Not every red lump near the eye is cherry eye. Inflammation, injuries, growths and other conditions can sometimes produce similar appearances.

The Cornell University College of Veterinary Medicine explains how examination and tear testing help assess affected dogs.

Can Cherry Eye in Dogs Go Away on Its Own?

A prolapsed gland may occasionally slip back into its normal position temporarily, particularly during the early stages.

However, this does not mean the underlying problem has resolved. The tissues responsible for holding the gland in place may remain weakened, allowing the swelling to reappear.

Eye drops or anti-inflammatory medication may reduce irritation, but they do not reliably repair the gland's supporting structures.

Owners should not attempt to push the gland back into place themselves. Manipulating the eye without veterinary guidance can cause additional irritation or injury.

Surgical repositioning is generally the recommended definitive treatment for persistent cherry eye.

How Is Cherry Eye Treated in Dogs?

The main goal of treatment is to return the prolapsed gland to an appropriate position while preserving its ability to produce tears.

Cherry Eye Surgery

Surgical replacement of the gland is the preferred treatment in most cases.

One commonly used method is the pocket technique, in which the surgeon creates a small pocket in the tissue of the third eyelid and secures the gland within it.

Other techniques involve anchoring the gland to nearby structures. The most suitable approach depends on the dog's anatomy, the condition of the gland and the surgeon's assessment.

If abnormal third-eyelid cartilage is present, additional correction may be required.

Why Should the Tear Gland Be Preserved?

The third-eyelid gland produces a substantial proportion of the watery component of a dog's tear film.

Removing it can increase the risk of keratoconjunctivitis sicca, commonly called dry eye.

Dry eye can cause chronic irritation, thick discharge, corneal inflammation and potentially serious damage to vision.

The ACVO recommends preserving and repositioning the gland because of its importance in maintaining tear production.

Can Medication Treat Cherry Eye Without Surgery?

Lubricating eye preparations or other veterinary-prescribed medication may help protect the exposed tissue and reduce inflammation before surgery.

However, medication alone is unlikely to provide a permanent solution when the gland repeatedly prolapses.

Do not use human eye drops or leftover prescription medication without veterinary advice, particularly products containing corticosteroids when a corneal ulcer has not been ruled out.

What Happens After Cherry Eye Surgery?

Most dogs recover well following successful gland-replacement surgery, although some swelling and redness may remain during the early healing period.

Your vet will provide instructions suited to the procedure performed.

Aftercare commonly includes:

• Giving prescribed eye medication as directed.
• Using a protective collar to prevent rubbing or scratching.
• Restricting rough play while the eye heals.
• Attending follow-up appointments.
• Monitoring for increased redness, discharge, pain or renewed swelling.

Visible inflammation often improves over the first one to two weeks, although recovery and follow-up requirements vary.

Do not stop medication early or remove the protective collar before your vet advises it is safe.

Can Cherry Eye Come Back After Surgery?

Yes. Recurrence is possible, even when surgery has been performed correctly.

The risk depends on factors including the surgical technique, gland inflammation, associated eyelid abnormalities and the individual dog's anatomy.

VCA Animal Hospitals reports recurrence in approximately 5 to 20 per cent of patients in its general guidance, although outcomes vary between surgical approaches and clinical settings.

Some dogs need a second procedure if the gland prolapses again. The VCA guidance explains the importance of gland preservation and follow-up care.

What Happens if Cherry Eye Is Left Untreated?

Untreated cherry eye may lead to persistent inflammation, swelling and irritation of the exposed gland.

Over time, the gland's normal function may be affected, increasing the risk of inadequate tear production and dry eye.

Chronic dry eye can cause discomfort, discharge, corneal changes and, in severe cases, visual impairment.

The longer the gland remains exposed and inflamed, the more challenging successful surgical repositioning may become.

However, cherry eye does not inevitably cause blindness, and many dogs have a very good outlook following appropriate treatment.

Cherry Eye in Dogs: Treatment and Possible Outcomes

Can You Prevent Cherry Eye in Dogs?

There is no proven home-care routine that reliably prevents cherry eye in a genetically or anatomically predisposed dog.

Good general eye care remains important. Check your dog's eyes regularly and seek advice if you notice swelling, redness, discharge or changes in appearance.

When choosing a puppy from a susceptible breed, ask about parental eye health and any history of cherry eye in related dogs.

Crossbreeding does not automatically eliminate inherited eye risks. Our guide to common health issues in Labradoodles

When Should You Take Your Dog to the Vet for Cherry Eye?

Arrange a veterinary appointment promptly if you notice a new pink or red swelling near the inner corner of your dog's eye, even if your dog seems comfortable.

Seek urgent assessment if your dog is squinting persistently, keeping the eye closed, showing significant pain, or if the eye becomes cloudy or appears injured.

These signs may indicate corneal damage or another serious eye condition that needs rapid treatment.

For an overview of other conditions and warning signs, read our guide to medical conditions in dogs, which covers eye problems alongside heart, digestive and joint conditions.

Frequently Asked Questions About Cherry Eye in Dogs

Can Cherry Eye in Dogs Heal Without Surgery?

The gland may occasionally return to its normal position temporarily, but the supporting tissues often remain weakened. Persistent or recurring cherry eye generally requires surgical repositioning.

Is Cherry Eye in Dogs an Emergency?

Cherry eye itself is not always an immediate emergency, but it should be assessed promptly. Severe pain, persistent squinting, cloudiness or sudden changes in vision require urgent veterinary attention.

How Long Does Cherry Eye Surgery Take to Heal?

Initial swelling and redness commonly improve over one to two weeks, although healing time varies. Follow your vet's instructions regarding medication, protective collars and follow-up examinations.

Can Cherry Eye Cause Blindness?

Cherry eye does not usually cause blindness directly. However, chronic inflammation and inadequate tear production can contribute to corneal damage and visual impairment if complications are left untreated.

Can a Dog Get Cherry Eye in Both Eyes?

Yes. Cherry eye can affect one or both eyes. The second eye may develop prolapse weeks, months or longer after the first.

Is Cherry Eye Contagious?

No. Cherry eye is a structural problem involving the third-eyelid gland, not an infectious disease that spreads between dogs.

Will Cherry Eye Return After Surgery?

Recurrence is possible, but most dogs have a favourable outcome following appropriate gland-preserving surgery. Some may require further treatment if the gland prolapses again.

Final Thoughts

Cherry eye in dogs is usually treatable, particularly when the prolapsed gland is assessed and managed promptly. Although the swelling can look alarming, many dogs recover well after surgery that preserves the gland and its tear-producing function.

Recognising the signs, understanding breed predisposition and seeking timely veterinary care can help protect your dog's long-term eye health.

This article provides general educational information and does not replace individual veterinary diagnosis, treatment or emergency care.