Free Guide to Cherry Eye in Dogs and Treatment Options

Understanding Cherry Eye in Dogs: What It Is and Why It Happens

Cherry eye is a common eye condition in dogs that occurs when the third eyelid, also called the nictitating membrane, prolapses or pops out of its normal position. The third eyelid is a pink or reddish tissue located in the inner corner of the eye, and it normally stays hidden. When the ligament that holds this tissue in place weakens or tears, the gland swells and becomes visible as a red, round mass that resembles a cherry—which is how the condition got its name.

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This condition develops when the connective tissue supporting the lacrimal gland loses its strength. The gland itself produces tears that help keep the eye moist and healthy, so when it prolapses, both the appearance changes and the eye's tear production may be affected. Cherry eye can occur in one eye or both eyes, and it may develop suddenly or gradually over time.

Certain dog breeds are more prone to cherry eye than others. Breeds with a genetic predisposition include Bulldogs, Boston Terriers, Cocker Spaniels, Shih Tzus, Lhasa Apsos, Pekingese, and Beagles. However, the condition can develop in any breed and at any age, though it most commonly appears in dogs under two years old. Some dogs may be born with a weakness in the ligament that eventually leads to cherry eye later in life.

The exact cause of why the ligament weakens is not completely understood, but researchers believe genetics plays a significant role. Environmental factors, eye trauma, or chronic inflammation may also contribute to the development of cherry eye. Understanding that this is a structural problem with the eye's supporting tissues helps explain why the condition requires veterinary attention and why prevention is not always possible.

Practical Takeaway: Cherry eye is a prolapse of the third eyelid caused by weakening connective tissue. If you notice a red mass in the inner corner of your dog's eye, particularly if you own a breed prone to this condition, schedule a veterinary examination to confirm the diagnosis.

Recognizing the Signs and Symptoms of Cherry Eye

The most obvious sign of cherry eye is the appearance of a red or pink mass in the inner corner of the affected eye. This mass may be small initially and gradually enlarge, or it may appear suddenly. The size can vary from a small bump to a mass that is quite prominent. In some cases, the tissue may be so swollen that it partially covers the eye or causes visible discomfort to the dog.

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Beyond the visible mass, dogs with cherry eye often display behavioral signs that indicate discomfort or irritation. These signs include excessive blinking, squinting, or keeping the affected eye closed more than usual. Some dogs may paw at or rub their eye frequently, which can worsen the irritation and lead to secondary complications. Excessive tearing or discharge from the eye is another common symptom, as the displaced gland becomes inflamed and irritated.

In some cases, dogs may develop redness around the eye area, mild swelling of the eyelid, or visible blood vessels on the white part of the eye. The eye may appear watery or have a mucous discharge. While the condition itself may not cause severe pain, the irritation can make dogs uncomfortable, and the rubbing and scratching can lead to corneal abrasion or infection if left untreated.

It's important to note that cherry eye is primarily a cosmetic and comfort issue in its early stages, but it can become more serious over time. The displaced gland produces tears, but the tears cannot flow normally to the eye surface, which can lead to dry eye syndrome. Additionally, the protruding tissue is more vulnerable to further irritation, infection, or trauma. Some dogs show minimal symptoms while others seem quite bothered by the condition.

Owner observations about behavior changes are valuable information to share with your veterinarian. Noting when you first noticed the mass, whether it appears to change in size, and what behaviors your dog displays can help your veterinarian assess the severity and urgency of treatment.

Practical Takeaway: Look for a red or pink mass in the inner corner of the eye, increased blinking, squinting, pawing at the eye, and excessive tearing. Document when symptoms appeared and share these observations with your veterinarian during an examination.

Non-Surgical Treatment Options and Home Management

In some cases, particularly when cherry eye is caught very early or in mild cases, your veterinarian may recommend conservative management before pursuing surgical intervention. One non-surgical approach involves the use of topical medications to reduce inflammation and prevent infection. Anti-inflammatory eye drops or ointments can help minimize swelling of the gland and reduce the irritation that causes the dog to rub at the eye. These medications must be prescribed by a veterinarian and applied according to their specific instructions.

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Lubricating eye drops or ointments formulated for dogs are another component of conservative management. Since the displaced gland may not be delivering tears effectively to the eye surface, artificial tears can help keep the eye moist and reduce irritation. These products are different from human eye drops and should be specifically labeled for veterinary use. Your veterinarian can recommend products that are appropriate for your dog's situation.

In rare cases, veterinarians may attempt manual reduction of the prolapsed tissue, which involves gently repositioning the gland back into its normal location. However, this approach has a high rate of recurrence because the underlying ligament weakness remains. Manual reduction is typically only attempted in very specific circumstances and must be performed by a trained veterinarian.

Home management focuses on preventing the dog from further irritating the eye. Keeping the dog's nails trimmed short reduces damage if they scratch at the eye. Using an Elizabethan collar (cone) for short periods can prevent self-trauma when necessary. Some owners find that applying a warm, damp cloth to the eye area provides comfort, though this should only be done if the dog tolerates it well and if there is no open wound or infection.

It's important to understand that non-surgical treatment typically addresses symptoms rather than correcting the underlying structural problem. Many cases eventually require surgery because the ligament does not naturally strengthen over time. Regular monitoring by your veterinarian helps determine if the condition is worsening or if surgical intervention becomes necessary.

Practical Takeaway: Conservative management using prescribed anti-inflammatory and lubricating drops, combined with preventing self-trauma, may help in mild early cases. However, discuss with your veterinarian whether surgical correction is recommended for your dog's specific situation.

Surgical Repair: Understanding the Surgical Options

Surgery is the most common and effective treatment for cherry eye, particularly when the condition causes discomfort, affects vision, or does not respond to conservative management. Multiple surgical techniques exist, and your veterinarian will recommend the approach they believe is most appropriate based on your dog's individual case. The goal of surgery is to permanently reposition the prolapsed gland back to its normal location or, in some cases, to remove it entirely.

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The most commonly performed procedure is called pocket technique or graft technique surgery. During this procedure, the veterinarian creates a small pocket in the conjunctiva (the tissue lining the eye) and sutures the prolapsed gland into this pocket, securing it in its normal position beneath the eyelid. This technique preserves the gland, which is important because the gland produces a significant portion of the dog's tears. Preserving tear production helps prevent dry eye syndrome from developing later in life.

Another surgical technique involves anchoring the gland using sutures placed through the surrounding tissue to hold it in its proper location. This approach also aims to preserve gland function while permanently correcting the prolapse. The specific technique used depends on factors such as the size of the gland, the severity of inflammation, and the surgeon's experience and preference.

In some cases, particularly when the gland is severely damaged, infected, or has recurred after previous surgery, a veterinarian may recommend gland removal, also called excision. While this eliminates the prolapse, it also removes the gland's tear production, which can lead to dry eye syndrome in some dogs. For this reason, most veterinarians prefer gland-sparing techniques when possible. Dogs that have gland removal require lifelong monitoring and may need long-term medication to manage tear production.

Surgical procedures for cherry eye are typically performed under general anesthesia by a veterinarian. The surgery usually takes 30 to 45