What exactly is that pink bulge in my dog's eye?

Dogs have a third eyelid, or nictitating membrane, tucked in the inner corner of each eye that sweeps across the cornea to spread tears and clear debris. Anchored at the base of that membrane is a tear-producing gland that normally stays out of sight, folded against the eye socket by a thin band of connective tissue. Cherry eye is the lay term for that gland prolapsing forward when its anchoring tissue weakens or tears, leaving a smooth, rounded, reddish-pink mass sitting at the inner corner of the eye (Merck Veterinary Manual, 2023).

The gland itself is not damaged or diseased when it first prolapses; it's simply out of position and exposed to air and friction it wasn't built to tolerate. Left uncovered, it can swell, dry out, and become inflamed, which is why what starts as a small pea-sized bump can grow larger and angrier-looking over days to weeks (Cornell Riney Canine Health Center, 2022). It can occur in one eye first and later develop in the second, since the underlying tissue weakness is often present on both sides even if only one gland has slipped so far.

What will I actually notice first at home?

Most owners first spot a small round lump at the inner corner of one eye that looks like a piece of raw cherry, hence the nickname. It's frequently first noticed in puppies and young dogs, commonly between 4 months and 2 years of age, and often develops quickly enough that owners describe it as appearing 'overnight' (VCA Animal Hospitals, 2023). The dog is usually still eating, playing, and acting completely normal otherwise, since the prolapse itself does not cause the level of pain that, say, a corneal ulcer would.

Secondary signs tend to follow within days: increased tearing or thick discharge, mild redness of the surrounding conjunctiva, and occasional squinting or pawing at the eye if the exposed gland dries out or gets irritated by blinking. Some dogs paw at the area enough to cause self-trauma, which can turn a mild prolapse into a more inflamed, bleeding mass. Watching for a sudden increase in eye rubbing after the lump appears is one of the more reliable signals that irritation is progressing rather than staying stable.

Why does this happen, and are certain dogs more likely to get it?

The root cause is thought to be a congenital weakness in the fibrous attachment that normally holds the tear gland in place, meaning affected dogs are essentially born with a structural predisposition rather than developing it from an injury (American College of Veterinary Ophthalmologists, 2022). Because that attachment defect tends to run in lines, cherry eye shows up far more often in certain breeds than others.

Breeds most frequently affected include English and French Bulldogs, Boston Terriers, Beagles, Bloodhounds, Cocker Spaniels, Shih Tzus, and Lhasa Apsos, with brachycephalic breeds especially overrepresented in clinical case series (Cornell Riney Canine Health Center, 2022). Given the hereditary component, most veterinary ophthalmologists recommend against breeding dogs that have experienced cherry eye, and some breed clubs already discourage it in their health guidelines.

How does a veterinarian confirm it's cherry eye and not something else?

Diagnosis is typically made through a straightforward physical and ophthalmic exam, since the appearance of a smooth pink mass at the medial canthus is fairly distinctive compared to other eyelid or conjunctival masses. Veterinarians will still check the rest of the eye closely, using fluorescein stain to rule out a corneal ulcer and checking tear production with a Schirmer tear test, since dogs prone to cherry eye can also be prone to dry eye, medically known as keratoconjunctivitis sicca (Merck Veterinary Manual, 2023).

A veterinarian will also gently manipulate the third eyelid to assess whether the gland can be repositioned manually and how much swelling or secondary conjunctivitis has developed, since that affects how urgently surgery should be scheduled. Bloodwork or imaging usually isn't needed, because cherry eye is a mechanical, localized problem rather than a systemic one.

Does cherry eye ever go away without surgery, or is surgery the only real option?

Occasionally a very mild, early prolapse can be massaged back into place and may stay there temporarily, especially in very young puppies, but recurrence is common and this is not considered a reliable long-term fix (VCA Animal Hospitals, 2023). Topical anti-inflammatory or lubricating drops can reduce swelling and irritation short-term, but they treat the symptom rather than the structural cause, so most cases relapse once medication stops.

Surgical repositioning is the standard of care and is typically done under general anesthesia using a pocket or envelope technique, where the surgeon creates a small tunnel of tissue to tuck the gland back into place and stitch it there, or an imbrication technique that tightens the tissue around the gland's base (American College of Veterinary Ophthalmologists, 2022). Removing the gland entirely used to be common practice but is now discouraged except as a last resort, because that gland contributes a meaningful share of the eye's tear film and its loss raises the risk of chronic dry eye later in life.

What does recovery and aftercare look like once the gland is repositioned?

Most dogs go home the same day wearing an E-collar to prevent rubbing or scratching at the surgical site, along with a course of topical antibiotic or anti-inflammatory eye drops for roughly 1 to 2 weeks (Cornell Riney Canine Health Center, 2022). Mild swelling and redness at the surgery site for the first several days is normal and typically resolves without intervention as the tissue heals.

Owners are usually asked to keep the dog calm, avoid off-leash rough play or swimming until cleared, and return for a recheck around 10 to 14 days to confirm the gland has stayed in position and the incision has healed cleanly. Recurrence rates after modern pocket or imbrication techniques are reported in the range of roughly 5 to 20 percent, and a second surgery, sometimes on the opposite eye as well, is not unusual if the original tissue weakness was more significant (Merck Veterinary Manual, 2023).

Will my dog have long-term eye problems after cherry eye?

The long-term outlook after surgical correction is generally good, with most dogs retaining normal tear production and comfortable, functional eyes for life once the gland is successfully repositioned. Because the underlying cause is a connective tissue predisposition rather than damage confined to one eye, owners of affected breeds should keep a close watch on the second eye, since prolapse can develop there months or years after the first side is treated (Cornell Riney Canine Health Center, 2022).

Dogs that had the gland removed rather than repositioned, or those with breed-related tear film abnormalities, warrant periodic tear production checks since reduced tear output can predispose them to chronic dry eye and secondary corneal irritation over time (American College of Veterinary Ophthalmologists, 2022). Routine annual eye exams are a reasonable part of ongoing care for any breed known to be predisposed to this condition.