What actually is that pink lump in the corner of a dog's eye?

Dogs have a third eyelid, or nictitating membrane, tucked into the inner corner of each eye that sweeps across the cornea to spread tears and clear debris. Embedded in its base is a gland responsible for roughly 30 to 50 percent of the eye's total tear production, according to the Cornell Riney Canine Health Center (Cornell University College of Veterinary Medicine, n.d.). That gland is normally anchored in place by a small band of connective tissue.

Cherry eye develops when that connective tissue weakens or tears, letting the gland flip up and protrude above the edge of the third eyelid as a smooth, rounded, pink to red mass. The Merck Veterinary Manual describes the underlying cause as a defect in the fibrous attachment holding the gland to the periorbita, a defect thought to have a hereditary component in predisposed breeds (Merck Veterinary Manual, 2023). Once exposed to air and friction, the gland tissue itself becomes inflamed and swollen, which is what makes the bump look larger and angrier over just a day or two.

Which breeds are most likely to develop cherry eye, and at what age?

Cherry eye is overwhelmingly a young dog's problem: most cases show up before 2 years of age, with many diagnosed between 6 months and 1 year, per Merck Veterinary Manual data (Merck Veterinary Manual, 2023). Brachycephalic and small-to-medium breeds dominate the case lists, including English and French Bulldogs, Cocker Spaniels, Beagles, Shih Tzus, Bulldogs, and Boston Terriers, largely because their orbital anatomy places extra strain on the gland's supporting tissue.

Genetics aside, the American College of Veterinary Ophthalmologists notes that the condition can affect one eye first, with the second eye prolapsing anywhere from days to years later in a meaningful percentage of predisposed dogs (American College of Veterinary Ophthalmologists, n.d.). Owners of at-risk breeds often ask whether anything triggers an episode; in most documented cases there is no identifiable inciting event, which supports the idea that this is a structural weakness rather than an injury response.

How do vets tell cherry eye apart from a tumor or other eye problem?

Diagnosis is typically made on sight during a routine ophthalmic exam, since cherry eye has a distinctive smooth, oval, salmon-pink appearance that differs from the more irregular, firm texture of a mass or the diffuse redness of conjunctivitis. Veterinary ophthalmologists confirm the diagnosis by gently everting the third eyelid to visualize the gland's position and checking for corneal ulceration with fluorescein dye staining, a standard step recommended before any surgical planning (VCA Animal Hospitals, n.d.).

Because the gland supplies a large share of the eye's tear film, vets also frequently run a Schirmer tear test to establish baseline tear production, especially in breeds already prone to keratoconjunctivitis sicca (dry eye). This baseline matters later, since surgical technique choice is partly guided by how much tear function that eye is already producing and how likely the gland is to keep functioning if it's repositioned rather than removed.

Does cherry eye need surgery, or will it resolve on its own?

Cherry eye essentially never resolves permanently without surgical correction; the gland does not reliably return to normal position and stay there through massage, medication, or time. The current standard of care recommended by veterinary ophthalmologists is surgical replacement of the gland rather than removal, using techniques such as the pocket technique or the orbital tacking (anchoring) method, both designed to reposition and secure the gland in place (American College of Veterinary Ophthalmologists, n.d.).

Removing the gland entirely was once common practice but is now discouraged in most cases because it significantly raises the lifetime risk of dry eye, a chronic condition that requires daily eye lubrication or medication for the rest of the dog's life. The Merck Veterinary Manual reports surgical success rates for gland-preserving techniques generally in the 90 percent-plus range for resolving the prolapse without recurrence (Merck Veterinary Manual, 2023), which is why most specialists reserve gland removal for cases where the tissue is too damaged to reposition.

What can owners do at home before the surgery date?

While waiting for a scheduled repair, most vets recommend keeping the exposed gland lubricated with a veterinary-approved sterile eye ointment several times a day to prevent it from drying out, cracking, or becoming secondarily infected. An E-collar (cone) is often advised in the interim if the dog is pawing or rubbing at the eye, since self-trauma can worsen swelling and increase the risk of corneal scratches.

Cold compresses applied briefly can sometimes reduce visible swelling before a procedure, but owners should not attempt to manually push the gland back into place at home; even if it appears to slip back temporarily, it is not secured and will prolapse again, often within hours. Scheduling surgery within a reasonably short window after diagnosis is generally preferred, since prolonged exposure can lead to chronic inflammation that makes the gland tissue more friable and harder to work with during repair (VCA Animal Hospitals, n.d.).

What does recovery look like after cherry eye surgery?

Recovery from gland-repositioning surgery is usually straightforward: most dogs wear an E-collar for 10 to 14 days to prevent rubbing, receive topical antibiotic or anti-inflammatory drops during that window, and return for a recheck to confirm the eyelid margin and gland position have healed properly. Mild swelling or a small amount of residual bulge in the first week or two after surgery is common and usually resolves as sutures dissolve and inflammation settles.

Recurrence is the main long-term risk owners should track, with reported rates varying by technique and by breed, and it tends to happen within the first few weeks to months if the initial repair doesn't hold. A second surgery is sometimes needed to re-anchor the gland, which is one reason many general practitioners refer brachycephalic or repeat cases to a board-certified veterinary ophthalmologist for the initial repair (American College of Veterinary Ophthalmologists, n.d.).

Will a dog that's had cherry eye develop dry eye or other lasting problems?

Most dogs treated with gland-sparing surgical techniques go on to have normal tear production and no lasting complications, which is the core rationale behind preserving the gland instead of excising it. Long-term dry eye is uncommon after successful repositioning surgery but becomes a real and often permanent risk when the gland has been removed entirely or fails to survive after repair, since tear production doesn't fully compensate from the remaining glandular tissue in every dog.

Because the underlying anatomical weakness is often present in both eyes, breeders and owners of predisposed breeds are frequently advised to watch the second eye closely for years afterward, not just months. Cornell's veterinary ophthalmology guidance notes that dogs who prolapsed one gland in puppyhood carry meaningfully elevated odds of prolapsing the other side later in life, making routine eye checks at annual wellness visits worthwhile well beyond the initial recovery period (Cornell University College of Veterinary Medicine, n.d.).