This guide is educational and cannot diagnose a red eye from a photograph. Squinting, a cloudy or blue cornea, sudden vision change, marked pain, trauma, bleeding, or a chemical exposure requires urgent veterinary care.

Cherry Eye in Dogs: Symptoms, Surgery, Recovery, and Recurrence

Quick Answer

Cherry eye is the common name for prolapse of the gland of the third eyelid, also called the nictitating membrane gland. The gland normally sits out of sight near the inner corner of the eye and contributes to the tear film. When its supporting tissue no longer holds it in place, it can appear as a smooth pink or red swelling beside the nose.

It is common in young dogs and can affect one or both eyes. In a UK primary-care cohort of more than 900,000 dogs, the annual prevalence was 0.20%, the median age at first diagnosis was 0.63 years, and dogs under one year had much higher odds than dogs aged two to under four [1]. Those figures describe that population; they do not mean an older dog cannot develop a third-eyelid mass.

A veterinary examination should confirm what the mass is and check the cornea, tear production, eyelids, and the rest of the eye. Other conditions—including third-eyelid cartilage abnormalities, inflammation, trauma, a protruding third eyelid caused by eye pain, and tumors—can resemble part of the picture. A red lump is not safely diagnosed through color alone.

Definitive treatment usually means surgically returning and securing the gland while preserving it. Routine gland removal is discouraged because the tissue helps make tears and removal can predispose the eye to keratoconjunctivitis sicca, or dry eye. The American College of Veterinary Ophthalmologists advises replacement rather than removal [2]. Surgery can recur or cause complications, and no single technique is proven best for every patient. A rapid evidence review found heterogeneous, mostly observational studies and insufficient evidence for confident comparisons among techniques [3].

Do not push, massage, puncture, tie, or medicate the swelling at home. Prevent rubbing with a properly fitted recovery collar if advised, and arrange veterinary care. Even a comfortable-looking dog needs assessment because exposed gland tissue becomes irritated, while an actually painful eye may have a corneal ulcer or another urgent problem.

What Is the Third Eyelid?

Dogs have an upper eyelid, a lower eyelid, and a third eyelid at the inner corner. The third eyelid is a mobile fold of conjunctiva supported by cartilage. It helps protect the ocular surface and distribute the tear film. Its associated gland sits near the base and supplies an important portion of the aqueous tear layer [2][4].

The visible pink membrane itself is not the same as its gland. A dog with pain may retract the globe slightly, allowing the third eyelid to sweep farther across the cornea. That can look like a pale or pink sheet. Cherry eye more typically looks like a rounded, fleshy mass protruding from behind the third eyelid. Both changes warrant examination, but they have different mechanisms and different treatments.

The tear film is not simply water. It lubricates the eyelids and cornea, carries nutrients and protective components, and supports a clear optical surface. Eyelids, conjunctiva, meibomian glands, goblet cells, the main lacrimal gland, and third-eyelid gland all contribute. Preserving one gland does not guarantee lifelong normal tears, but discarding useful tear tissue is generally contrary to long-term ocular-surface protection.

What Cherry Eye Looks Like

Typical features include:

• a rounded pink, red, or salmon-colored mass at the inner corner;
• one eye affected first, with the other possibly affected later;
• intermittent appearance early on, followed by a persistent prolapse;
• watery or mucus-like discharge;
• conjunctival redness or swelling;
• rubbing or pawing if the tissue is irritated;
• an otherwise bright, comfortable puppy—or a dog with additional pain from a concurrent problem.

Color changes with inflammation, surface drying, bleeding, and pigmentation. Size can also fluctuate. Those differences do not reliably measure severity. A small prolapse can still need surgery, and a dramatic-looking swelling is not necessarily a vision-ending emergency if the cornea is clear and the dog is comfortable. Triage depends on the whole eye, not the photograph.

Can Cherry Eye Come and Go?

Yes. The gland may briefly return behind the eyelid and then prolapse again. Intermittent disappearance does not prove that the supporting attachment healed. ACVO notes that the gland can regress and reappear [2]. Photographing the change can help the veterinarian when the tissue is not visible at the visit, but do not delay an examination while waiting for the “best” picture.

One Eye or Both?

Either pattern occurs. In a retrospective series of 114 dogs with 155 prolapses, 64% were unilateral at presentation. Among dogs in which both glands prolapsed at different times, the opposite side appeared within three months in about 71% [5]. That does not justify preventive surgery on every normal eye; it does justify discussing the individual risk and watching the second eye.

Is Cherry Eye Painful or an Emergency?

The prolapse itself may initially cause irritation rather than severe pain. Exposure can lead to swelling, inflammation, discharge, and self-trauma. Delay can make the tissue more inflamed and surgical replacement more difficult, so prompt consultation is sensible [2].

Eye pain changes urgency. Seek same-day or emergency assessment when the dog:

• squints or keeps the eye closed;
• has a cloudy, blue, white, or visibly damaged cornea;
• suddenly seems unable to see;
• sustained a scratch, bite, blunt injury, or chemical exposure;
• has blood within or around the eye;
• rubs continuously despite protection;
• has a rapidly enlarging, irregular, ulcerated, or dark mass;
• appears systemically ill, weak, or feverish.

A corneal ulcer can worsen quickly and may look like “red eye.” Glaucoma and inflammation inside the eye can also threaten vision. Never assume a dog is comfortable because it still eats, plays, or does not cry. Dogs commonly show ocular pain through squinting, avoidance of light, rubbing, reduced interaction, or a subtle change in posture.

What Causes Cherry Eye?

The prevailing explanation is inadequate connective-tissue attachment holding the gland in its normal position. The precise cause is not resolved in every dog. Age, ancestry, skull shape, and inherited biology appear relevant, while ordinary owner care is usually not the cause.

The large VetCompass study found strong associations with young age and several breeds and found brachycephalic dogs had higher odds than mesocephalic dogs [1]. A recent genome-wide association study reported candidate genomic regions, supporting a biological component, but candidate associations do not yet provide a simple predictive test or prove one mutation causes all cases [6].

Excitement, play, bathing, or rubbing may make a prolapse first noticeable, but temporal association does not prove the activity created the structural weakness. Allergies and conjunctivitis may add redness without being the underlying reason the gland can displace. Owners should not be blamed for a condition that often emerges in predisposed young dogs.

Breeds and Dogs at Higher Risk

Reported predispositions include Bulldogs, Cane Corsos, Neapolitan Mastiffs, Lhasa Apsos, American Cocker Spaniels, and other breeds. The UK cohort found especially high odds in several of these groups and an association with brachycephalic conformation [1]. An earlier clinical series also recorded bilateral disease frequently in French Bulldogs, Shar-Peis, Great Danes, English Bulldogs, and Cane Corsos [5].

These are population associations, not diagnoses. A mixed-breed dog can develop cherry eye; a high-risk breed may never do so. Breed appearance alone cannot determine whether a red mass is a prolapsed gland, and it cannot predict the exact outcome of surgery.

Does Neutering Cause Cherry Eye?

Observational records can identify associations but cannot automatically establish causation. The VetCompass analysis found higher odds in neutered animals within both sexes, but age, healthcare access, timing, and other variables complicate interpretation [1]. Current evidence does not justify telling owners that neutering directly caused the prolapse or changing reproductive decisions solely to prevent cherry eye.

Conditions That Can Be Mistaken for Cherry Eye

Not every structure in the inner corner is a prolapsed gland. Important alternatives include protrusion of the whole third eyelid because the eye is painful, eversion of third-eyelid cartilage, severe conjunctival swelling, a foreign body, trauma, cysts, inflammatory nodules, and benign or malignant tumors. ACVO lists pain from corneal ulceration or inflammation inside the eye, neurologic disease, trauma, and cancer among causes of third-eyelid change [4]. Age helps prioritize possibilities but cannot rule them in or out.

Third-eyelid cartilage eversion can occur with gland prolapse and may require a modified surgical plan. A smooth medial mass in a young predisposed dog is suggestive; an irregular or bleeding mass appearing in an older dog deserves particular caution. The veterinarian needs to examine the tissue directly rather than treating every medial swelling with one technique. Unusual tissue may require sampling or histopathology.

How Veterinarians Diagnose Cherry Eye

Diagnosis begins with history: when the mass appeared, whether it comes and goes, which eye was first, whether there is rubbing or squinting, what medication has been used, and whether the dog had eye surgery. The clinician examines both eyes because a second abnormality can change treatment and contralateral disease can develop later.

The examination may include inspection of the gland, cartilage, eyelid margins, and conjunctiva; a Schirmer tear test; fluorescein staining for corneal ulceration; magnified examination; intraocular-pressure measurement when appropriate; vision-related responses; and careful examination behind the third eyelid when a foreign body is possible.

Test order matters. Tear testing is generally performed before drops that could alter the result. Technique also affects interpretation: a controlled study found different Schirmer values with eyelids open versus closed, showing why consistent method matters when measurements are compared over time [7]. One number must be interpreted alongside signs, medications, conformation, and ocular-surface findings.

Why Check Tear Production Before Surgery?

A baseline can identify a dog that already has low tear production and provide context for postoperative monitoring. Cherry eye and dry eye are related clinically but are not interchangeable diagnoses. A dog can have an exposed gland and a normal Schirmer result, low aqueous production, or an unstable ocular surface for other reasons.

Brachycephalic dogs can have ocular-surface disease despite apparently adequate aqueous tears. In one Shih Tzu study, incomplete blinking and conformational abnormalities were common even though median Schirmer production was adequate [8]. A tear strip therefore cannot replace examination of blinking, eyelid fit, corneal staining, discharge, and surface health.

Cherry Eye Treatment

Is Medicine Alone a Cure?

Topical medication may reduce secondary inflammation or treat a concurrent surface problem, but it does not reliably restore the structural attachment that failed. A clinician may prescribe lubrication or other medication before surgery when tissue is irritated, the cornea needs treatment, or referral is being arranged. That is supportive care, not proof that the prolapse is permanently corrected.

Do not use leftover antibiotic, steroid, redness-relief, or human eye drops. A steroid applied to an undiagnosed corneal ulcer can worsen infection and healing. Medication choice, frequency, and duration depend on corneal integrity, tear production, inflammation, and the planned procedure.

Can You Massage Cherry Eye Back In?

Internet videos sometimes demonstrate pressure or massage. This is not a safe do-it-yourself cure. Manipulation can traumatize the gland, contaminate the surface, cause bleeding, worsen an ulcer, or temporarily hide the mass without repairing its support. It also delays diagnosis if the mass is not actually cherry eye.

If a veterinarian manipulates the gland during examination or gives a specific temporary plan, follow that individualized direction. Otherwise, protect the eye from rubbing and arrange care. Never puncture, cut, tie off, or apply household remedies to eye tissue.

Why Surgery Usually Preserves the Gland

The goal is to restore the gland near its normal position while retaining tear function and third-eyelid movement. ACVO recommends replacement because removal predisposes dogs to later dry eye [2]. Historic excision may make the lump disappear quickly, but cosmetic disappearance is not the same as protecting lifelong ocular function.

Dry eye can cause thick discharge, recurrent conjunctivitis, pain, corneal ulceration, blood-vessel growth, pigmentation, scarring, and impaired vision. It may require ongoing medication and monitoring. Preserving the gland does not eliminate every future dry-eye risk, especially in predisposed dogs, but it avoids deliberately sacrificing functioning lacrimal tissue.

Cherry Eye Surgery

Several replacement procedures exist. Broadly, a surgeon may create a conjunctival pocket around the gland, anchor it to nearby tissue, or combine principles. Technique is selected for anatomy, tissue condition, cartilage abnormality, previous surgery, surgeon experience, and recurrence risk.

The Morgan pocket technique places the gland within a constructed conjunctival pocket. Anchoring procedures secure it to a deeper structure. Owners do not need to select surgery from an online diagram; they need a surgeon who can explain why a method fits their dog's eye and how complications will be handled.

What Does Evidence Say About the Best Technique?

The answer is less certain than many marketing pages imply. A rapid review identified seven replacement techniques plus excision. Nearly all evidence was observational or descriptive, reporting was inconsistent, and data were insufficient to compare techniques confidently. A proportional meta-analysis estimated a 3% failure rate for the Morgan pocket procedure, but that pooled number is not an individual guarantee [3].

Individual retrospective series can report excellent results. A suture-anchor study evaluated 100 dogs and 122 eyes [9]. A newer series using a modified pocket procedure with temporary fixation reported successful long-term repositioning after one operation in 125 of 126 eyes, while also recording cysts, corneal ulcers, and later ocular-surface conditions [10]. Encouraging series do not erase differences in selection, surgeon experience, follow-up, breed, definitions, or study design.

Ask about the clinic's experience, what counts as recurrence, the expected follow-up, and how failure would be managed. A responsible estimate acknowledges uncertainty.

Anesthesia and Preoperative Planning

Replacement generally requires general anesthesia because the surgeon works beside the cornea and the patient must remain still. The team reviews age, airway conformation, medical history, medication, previous anesthetic events, and examination findings. Preanesthetic testing is individualized; no single panel guarantees safety.

Brachycephalic dogs may need special airway planning and close recovery monitoring. Young age does not make anesthesia risk-free, but it does not automatically make surgery unsafe. The relevant comparison includes the consequences of leaving exposed tissue or removing the gland.

Tell the clinic about every medication and supplement. Follow fasting instructions exactly, including special instructions for young or medically vulnerable patients. Do not withhold essential medication or give a sedative unless instructed.

Should Both Eyes Be Operated On?

If both glands are prolapsed, a surgeon may correct both during one anesthetic when appropriate. If the other gland remains normal, preventive surgery is not automatic. Although contralateral prolapse can occur soon after the first [5], operating on normal tissue has risks and lacks a universal mandate. Discuss the individual's anatomy, travel, anesthetic considerations, and monitoring plan.

Recovery After Cherry Eye Surgery

Postoperative instructions vary, so the discharge sheet outranks generic advice. Common elements include a rigid or well-fitted recovery collar, prescribed eye medication, activity restriction, and rechecks. The dog must not rub the eye against paws, furniture, carpet, or another pet.

Some swelling, redness, discharge, or visibility of third-eyelid tissue may occur early. Judge it against the surgeon's expected timeline. Contact the clinic if swelling suddenly increases, the rounded mass returns, sutures appear exposed, discharge becomes thick, or pain increases.

The Recovery Collar

Keep the collar on for the full prescribed period, including sleep. Rubbing can damage sutures in seconds. The edge should extend beyond the nose, the neck fit should prevent removal without impairing breathing or swallowing, and bowls may need adjustment.

Inflatable rings and soft collars may not block a paw or may allow a short-faced dog to rub against furniture. Ask the team to confirm that the device works. Supervision is not a substitute for protection when the caregiver turns away.

Giving Eye Medication Safely

Wash hands, organize prescribed products, and avoid touching the bottle tip to hair, eyelid, or cornea. Support the head gently, apply the product as demonstrated, reward cooperation, and replace the cap. Follow the instructed order and spacing when multiple products are used.

Do not double a dose after a spill without asking, and do not stop because the eye looks better. If application becomes a struggle, call for handling adjustments rather than wrestling near a healing eye. Sudden pain during medication can signal an ulcer or another complication.

Activity and Daily Life

Use leash walks and prevent wrestling, face rubbing, dusty digging, swimming, and rough play until cleared. Separate boisterous pets. A harness may reduce neck pressure but does not replace the collar. Keep bedding clean and avoid smoke, aerosols, and debris around the face.

Appetite may be reduced briefly after anesthesia, but persistent vomiting, marked lethargy, breathing difficulty, collapse, or refusal of food requires contact. Follow the specific feeding and pain plan; never add human pain relievers.

Complications and Recurrence

Possible complications include recurrent prolapse, persistent swelling, inflammation, corneal ulceration, exposed or irritating suture, cyst formation, infection, third-eyelid movement problems, and dry eye. A complication is not always evidence that someone did something wrong; tissue quality, conformation, self-trauma, concurrent disease, and the limits of a technique all affect outcome.

Recurrence may appear as the familiar rounded mass or as subtler displacement. Contact the surgeon rather than repeatedly manipulating it. The next step may be reassessment after swelling settles, medication for a concurrent surface problem, or revision surgery using the same or a different method. Do not assume a second procedure must remove the gland.

The recent modified-pocket series illustrates both the potential and the limits of published success numbers: recurrence was recorded in one of 126 eyes, but lacrimal cysts and corneal ulcers also occurred, and the authors could not determine whether later dry-eye or ulcerative conditions were related to surgery [10]. Long follow-up is valuable because a good appearance at two weeks does not answer every lifelong tear-function question.

Why Might Surgery Fail?

Potential contributors include severely inflamed tissue, inadequate holding tissue, suture reaction or breakage, an uncorrected cartilage abnormality, rubbing, early rough activity, technical factors, and individual conformation. Breed may influence outcomes in some reports, but the rapid review found limited detail and could not make robust breed-specific comparisons [3]. Owners should not interpret recurrence as proof that they failed when they followed instructions.

What If the Gland Was Previously Removed?

Tell every future veterinarian and ophthalmologist. Baseline and periodic tear assessment may be appropriate, particularly if discharge, redness, squinting, pigmentation, or recurrent ulcers develop. Removal does not guarantee dry eye, but it reduces available lacrimal tissue and changes the risk conversation [2].

If dry eye develops, diagnosis and treatment are individualized. It is not managed by simply using any over-the-counter lubricant whenever the eye looks red. The clinician evaluates tear quantity, surface health, ulceration, infection, eyelids, and response over time. Some dogs need long-term prescription tear-stimulant and lubricant therapy.

Long-Term Eye Care

After healing, continue to notice blinking, discharge, corneal clarity, pigmentation, and comfort in both eyes. At routine examinations, mention the history even when surgery occurred years earlier. Tear production can change with age, immune-mediated disease, medication, and ocular-surface conditions.

Seek assessment for recurring mucus, redness, squinting, light sensitivity, or a dull-looking cornea. Chronic signs should not be dismissed as normal for a short-faced or wrinkled breed. Incomplete blinking, medial hairs, eyelid rolling, prominent eyes, and shallow orbits can add risk independently of cherry eye; the Shih Tzu ocular-surface study demonstrates that adequate aqueous production alone does not guarantee normal surface homeostasis [8].

Keep facial folds clean and dry according to veterinary guidance, trim hair only when it can be done safely, and avoid letting shampoo enter the eyes. Do not use routine medicated drops without an indication. Protective eyewear may help selected working or outdoor dogs after training, but it is not a treatment for an anatomic eyelid or gland problem.

Can Cherry Eye Be Prevented?

There is no proven supplement, massage, exercise restriction, or eye drop that strengthens the gland attachment. Preventing face rubbing and treating inflammation may reduce secondary trauma but cannot guarantee the gland remains seated. Routine manipulation may cause harm.

Population evidence supports inherited and conformational contributions [1][6]. Breeders can use health histories across related dogs, avoid normalizing affected eyes as merely cosmetic, and discuss breeding decisions with veterinarians and breed-health programs. A single affected dog does not reveal a simple Mendelian formula, and a currently clear-eyed parent cannot guarantee unaffected puppies.

Prospective owners can ask whether parents, siblings, or previous litters had cherry eye, what age it occurred, whether one or both eyes were involved, what surgery was needed, and whether dry eye followed. Claims that a line is “clear” should specify the age and number of relatives observed. No available consumer DNA panel can certify that a puppy will never develop the condition.

Cherry Eye Surgery Cost and Insurance

There is no honest universal price. Cost varies by country and region, general practice versus referral care, one eye versus both, diagnostic testing, surgeon, technique, anesthesia and airway needs, medication, collar, rechecks, and whether the case is recurrent or has a corneal ulcer or cartilage abnormality.

Request a written estimate showing what is included and what could add cost. Useful questions include:

• Does the estimate include examination, tear testing, staining, anesthesia, monitoring, and recovery?
• Is medication and a correctly fitted collar included?
• How many rechecks are expected?
• What happens financially and medically if the gland recurs?
• Is histopathology included if the tissue looks abnormal?
• When would a veterinary ophthalmologist become involved?
• Are after-hours complications handled at the same clinic?

Insurance coverage depends on the actual policy, waiting period, enrollment date, pre-existing-condition rules, bilateral-condition clauses, deductible, and exclusions. Obtain a written coverage decision where possible. Do not delay urgent pain or corneal care while waiting for reimbursement.

A lower initial quote is not automatically better value if it involves gland removal, omits monitoring, or provides no follow-up. Ask specifically whether the proposed operation preserves the gland. Conversely, referral does not guarantee a perfect outcome. Choose based on the patient's complexity, clinician's experience, communication, and the ability to manage complications.

Preparing for the Consultation

Bring photographs showing intermittent prolapse, a medication list, prior records, and any insurance forms. Note the first date, whether the mass changed, which eye came first, and whether the dog squints or rubs. Report previous eye problems and family history when known.

Questions worth asking include:

1. Are you confident this is the third-eyelid gland rather than cartilage disease, a cyst, or a mass?
2. Is the cornea intact, and what is the baseline tear result in each eye?
3. Why do you recommend this replacement technique for this dog?
4. How will you preserve the gland, and under what rare circumstances might removal be considered?
5. What recurrence and complication experience does the clinic have?
6. What will recovery look like, and what signs require an urgent call?
7. Is referral appropriate now or if the first repair fails?

These questions do not challenge the clinician; they create shared expectations. A good plan explains both the preferred outcome and what happens if healing is not straightforward.

Common Mistakes to Avoid

• Waiting months because the dog does not appear painful.
• Assuming every red medial mass is cherry eye from an image search.
• Repeatedly pushing or massaging the tissue.
• Using leftover steroid or antibiotic eye medication.
• Accepting routine gland excision without discussing tear preservation.
• Removing the recovery collar early because the incision is small.
• Missing prescribed rechecks after the eye looks normal.
• Treating recurrence as a reason to abandon gland-preserving options.
• Ignoring the other eye or long-term signs of dry eye.
• Promising a puppy buyer that parentage or a DNA panel eliminates risk.

Frequently Asked Questions

Can cherry eye go away on its own?

The gland may temporarily slip back behind the third eyelid, especially early, but it commonly reappears because the underlying support remains inadequate [2]. A temporary normal appearance is a reason to show the veterinarian a photograph, not proof of cure.

Is cherry eye contagious?

No. Prolapse of the third-eyelid gland is not transmitted between dogs. Infectious conjunctivitis or respiratory disease can cause eye discharge and redness, which is another reason to confirm the diagnosis.

Can cherry eye make a dog blind?

An uncomplicated prolapse does not usually cause sudden blindness. Chronic inflammation, self-trauma, corneal ulceration, or severe dry eye can threaten comfort and vision. Cloudiness, marked pain, or vision change needs urgent care.

Does every dog with cherry eye need surgery?

Most persistent confirmed prolapses are treated with surgical replacement, but timing and planning depend on corneal health, inflammation, anesthesia, age, and other disease. Medication may support the surface but is not a reliable permanent structural cure.

Should the cherry-eye gland be removed?

Routine removal is discouraged because the gland contributes to tears and excision predisposes the dog to dry eye [2]. Replacement and preservation are the usual goals. Exceptional tissue disease must be evaluated individually and suspicious removed tissue should be submitted for diagnosis.

How soon should cherry eye be treated?

Arrange a veterinary examination promptly. Earlier replacement may avoid prolonged exposure and inflammation [2]. Squinting, cloudiness, injury, bleeding, or vision change raises urgency to same-day or emergency care.

Can cherry eye return after surgery?

Yes. Recurrence is a recognized complication, although many series report high success. Evidence does not support one guaranteed rate for every technique, surgeon, breed, and case [3]. A recurrence should be re-examined; revision can often preserve the gland.

Can the other eye develop cherry eye later?

Yes. Bilateral disease may be simultaneous or sequential. In one clinical series, most sequential second-eye prolapses occurred within three months, although later onset remains possible [5]. Do not operate on a normal eye automatically; discuss monitoring and individual risk.

How long does recovery take?

The exact collar, medication, activity, and recheck period depends on the procedure and healing. Follow the surgeon's written instructions. Visible improvement can occur before tissue is strong enough to tolerate rubbing.

Why is my dog's eye still red after surgery?

Early postoperative inflammation can be expected, but increasing redness, pain, thick discharge, corneal cloudiness, or return of the rounded mass needs a call. Do not restart old medication or remove the collar to inspect more closely.

Are Bulldogs and Cocker Spaniels more likely to get cherry eye?

Several breeds and brachycephalic conformation have higher odds in population studies [1]. Risk is not certainty: affected dogs occur outside those breeds, and many predisposed dogs remain unaffected.

Can a dog with repaired cherry eye still develop dry eye?

Yes. Preserving the gland protects useful tear tissue but cannot prevent every immune-mediated, drug-associated, age-related, or conformational cause of dry eye. Continue monitoring discharge, comfort, corneal clarity, and tear production when indicated.

Key Takeaways

• Cherry eye is prolapse of the third-eyelid tear gland, not every red lump near the eye.
• Young dogs and several breeds are overrepresented, but any dog can be affected.
• Squinting, cloudiness, trauma, bleeding, or vision change requires urgent care.
• Veterinary examination should include the cornea, eyelids, third-eyelid cartilage, and tear function.
• Definitive care usually repositions and preserves the gland rather than removing it.
• Published surgical results are encouraging, but evidence cannot name one perfect technique for every dog.
• A recovery collar, prescribed medication, activity restriction, and rechecks protect the repair.
• Recurrence, cysts, ulcers, suture irritation, and dry eye are possible and deserve prompt reassessment.
• Do not massage, puncture, or treat the eye with leftover or human medication.
• Long-term ocular-surface monitoring remains important even after a good cosmetic result.

References

1. O'Neill DG, Yin Y, Tetas Pont R, et al. Breed and conformational predispositions for prolapsed nictitating membrane gland in dogs in the UK. PLoS One. 2022;17:e0260538. PMID: 35081121.
2. American College of Veterinary Ophthalmologists. Cherry Eye. Accessed July 15, 2026.
3. White C, Brennan ML. An evidence-based rapid review of surgical techniques for correction of prolapsed nictitans glands in dogs. Veterinary Sciences. 2018;5:75. PMID: 30142957.
4. American College of Veterinary Ophthalmologists. How Many Eyelids Does My Pet Have?. Accessed July 15, 2026.
5. Mazzucchelli S, Vaillant MD, Wéverberg F, et al. Retrospective study of 155 cases of prolapse of the nictitating membrane gland in dogs. Veterinary Record. 2012;170:443. PMID: 22472538.
6. Zeng Y, Feng X, Jiang Y, et al. Genome-wide association studies with prolapsed gland of the third eyelid in dogs. Frontiers in Veterinary Science. 2025. PMID: 39926593.
7. Sebbag L, Allbaugh RA, Strauss RA, et al. Schirmer tear test-1 with open or closed eyelids: An evaluation in brachycephalic and nonbrachycephalic dogs. Veterinary Ophthalmology. 2024. PMID: 38654458.
8. Silva L, et al. Shih-Tzu dogs show alterations in ocular surface homeostasis despite adequate aqueous tear production. BMC Veterinary Research. 2024. PMID: 38229091.
9. Sapienza JS, Mayordomo A, Beyer AM. Suture anchor placement for correction of prolapse of the gland of the third eyelid in dogs. Journal of the American Veterinary Medical Association. 2013. PMID: 23879878.
10. Guionnet A, Weverberg F. Surgical correction of prolapse of nictitating membrane gland using a variant of the pocket technique. Veterinary Ophthalmology. 2026;29:e70031. PMID: 40415639.