Cherry Eye in Dogs: Causes, Treatment Options, and Recovery

If you’ve noticed a red, fleshy mass poking out from the inner corner of your dog’s eye, you’re likely looking at cherry eye in dogs — a condition that looks alarming but is manageable with the right care. To understand what causes cherry eye in dogs, you need to know a bit about canine eye anatomy. Understanding what is cherry eye in dogs starts with the third eyelid, or nictitating membrane, which contains a tear-producing gland. When that gland prolapses, you get what owners call cherry eye dogs know well: a visible red bulge at the eye’s corner. Left untreated, this condition affects tear production and can lead to chronic dryness or irritation — making third eyelid dog treatment important to pursue promptly.

Cherry eye is more common in certain breeds, including English Bulldogs, Cocker Spaniels, Beagles, Basset Hounds, and Shih Tzus. It can appear in one or both eyes and is most often seen in dogs under two years of age, though it can occur at any age.

What Causes Cherry Eye in Dogs?

Weak Connective Tissue

The primary cause behind what causes cherry eye in dogs is a weakness or laxity in the connective tissue that anchors the third eyelid gland in place. When that tissue isn’t strong enough to hold the gland, the prolapse occurs. This weakness appears to be hereditary in the breeds most commonly affected. There is no lifestyle factor a dog owner can change to prevent it in predisposed breeds.

Breed Predisposition

Brachycephalic breeds — those with flat faces and wide eye sockets — are disproportionately affected by cherry eye dogs face. The anatomy of these dogs creates less structural support around the eye, making gland prolapse more likely. If you have a Bulldog or similar breed, knowing the signs means you can catch it early and pursue third eyelid dog treatment before secondary complications develop.

Trauma or Irritation

In some cases, trauma to the eye area or chronic inflammation can trigger prolapse. Dogs that frequently paw at their eyes or have recurring eye infections may be at higher risk. However, hereditary weakness remains the dominant cause across the breeds most commonly diagnosed with cherry eye in dogs.

Diagnosing and Treating Cherry Eye in Dogs

Veterinary Diagnosis

Diagnosis is straightforward. Your vet will visually confirm the prolapsed gland and assess whether it’s in one or both eyes. They’ll also evaluate the eye for secondary issues such as conjunctivitis, corneal irritation, or reduced tear production. A Schirmer tear test may be performed to measure tear output, since the third eyelid gland produces roughly 30–50% of a dog’s total tears.

Surgical Repositioning

The gold standard for third eyelid dog treatment is surgical repositioning of the gland, not removal. Older practices involved removing the prolapsed gland entirely, but this significantly increases the risk of dry eye (keratoconjunctivitis sicca) later in life. Modern surgical techniques tuck the gland back into its correct position and suture it in place. Success rates are high — most dogs recover full gland function and normal tear production after surgery.

When Surgery Is Delayed

Some owners manage cherry eye dogs deal with using lubricating eye drops and gentle manual massage to temporarily reduce the prolapse. This is not a long-term solution. The longer the gland remains prolapsed, the more inflamed and damaged it becomes, which reduces the chance of successful surgical repositioning. Early intervention gives the best outcome.

Recovery and Long-Term Care

After surgical treatment for cherry eye in dogs, recovery typically takes two to three weeks. Your dog will need to wear an Elizabethan collar (e-collar) to prevent pawing at the eye. Antibiotic and anti-inflammatory eye drops are usually prescribed for the first week or two. Schedule the follow-up appointment your vet recommends — suture checks are important to confirm the gland has stayed in place.

Recurrence rates vary by technique and surgeon. The pocket technique (also called the Morgan pocket technique) has lower recurrence rates than simple suturing. Ask your vet which method they use. In some dogs, the opposite eye eventually develops the same issue, so monitor both eyes after the first episode of what is cherry eye in dogs you’ve experienced.

Next steps: If you see a red mass at your dog’s eye corner, schedule a vet appointment within a few days rather than waiting. Early surgical repair gives the best long-term outcome and protects your dog’s tear production for life.