강아지 안검외반(눈꺼풀 뒤집힘) 증상과 원인, 진단·치료와 관리 포인트 총정리

If Your Dog’s Eyelids Are Drooping — Causes of Ectropion and Surgical Timing

Eye HealthDiseasesMeongsiljang Veterinary Advisory Board

Canine ectropion is a condition in which the eyelid turns outward, exposing the eye and increasing the risk of pain and infection, making early diagnosis important. It is primarily associated with breed-specific traits and genetic factors.

Canine Ectropion Is a Condition in Which the Eyelid Turns Outward, Exposing the Eye

The eye structure of a puppy with ectropium

Ectropion in dogs is a condition in which the eyelid turns outward, leaving the eye exposed and significantly compromising its protective function. It commonly occurs in dogs with breed-related structural weaknesses around the eyes, placing them at higher risk for dryness, infection, and corneal ulcers. This condition can cause persistent irritation and pain. Early detection and proper management are crucial for preserving vision. If you notice any symptoms, consult your veterinarian immediately.

The Main Causes of Ectropion Are Genetic Factors and Breed Characteristics

- Genetic factors: Ectropion is a condition that can have a genetic or structural predisposition, sometimes caused by an abnormal eyelid structure inherited from the parent dogs. - Breed characteristics: The incidence is higher in large and giant breeds with loose facial skin and lax eyelids, such as Bloodhounds, Saint Bernards, Newfoundlands, and Cocker Spaniels. - Facial structure: When the muscles and skin around the eyes become loose, or if the eyelids are long and droopy, the eyelid margins are more likely to turn outward naturally. - Trauma and aging (acquired): Trauma, scarring (cicatricial changes), overcorrection from previous entropion surgery, and age-related loss of skin elasticity can also cause ectropion. Since acquired eyelid conditions become more common with age, early diagnosis and consistent care are the most effective ways to manage the condition.

The facial structure of breeds with loose eyelids

Do Not Miss Key Symptom Signals

- Increased tearing: Frequent tearing or tear stains on the cheeks warrant attention. - Redness and irritation: Persistent redness or irritation in the eyes may indicate inflammation. - Rubbing the eyes: Increased rubbing or scratching of the eyes suggests irritation. - Dryness and discomfort: The eyes may appear dry, and the pet might blink frequently. - Inflammation and ulcers: In severe cases, inflammation or ulcers can develop on the cornea. If symptoms appear, immediate veterinary care is necessary.

Dogs with tear flow and tear stains on their cheeks

Immediate Veterinary Visit Is Necessary If Inflammation or Ulcers Develop in the Eye

If your pet’s eyes become suddenly red, painful, excessively watery, or if they keep their eyes closed, it may indicate an infection or ulcer. Because this condition can impair vision, you should consult a veterinarian immediately. Delaying treatment can lead to serious complications.

Diagnosis Is Performed Through the Veterinarian’s Eye Examination and Specialized Instruments

- Initial Examination: The veterinarian directly observes the eyes to assess the position of the eyelids and the overall condition of the eye. - Use of Specialized Instruments: Tools such as lamps and microscopes are used to precisely examine the eye’s structure and check for any damage. - Corneal Staining Test: A staining agent is applied to detect ulcers or injuries on the eye. - Tear Flow Test: This test evaluates tear production to determine if dry eye is present. Multiple tests are often conducted together for an accurate diagnosis. Early diagnosis significantly improves treatment success rates.

A veterinarian examining a dog's eyes with a slit lamp

Treatment Is Divided Into Medication and Surgery, Selected Based on the Condition

- Medication: For mild cases without complications, we can protect the eyes and reduce irritation by using artificial tears, lubricants, and anti-inflammatory eye drops. - Surgical Indications: Surgery is primarily considered when significant secondary lesions, such as keratitis or ulcers caused by exposure, are present. It is not necessarily required in all cases. - Timing and Surgical Method: Procedures such as wedge resection or V-Y plasty are used to return the eyelid to its normal position. It is best to perform surgery after facial structures have matured, typically after 6 to 12 months of age. - Postoperative Care: As needed, we provide antibiotic, anti-inflammatory, and pain management treatments. An Elizabethan collar (neck collar) is worn to prevent self-inflicted damage from rubbing or scratching the eyes, and the cornea is monitored frequently. - Treatment Plan: Consulting with your veterinarian to create a customized treatment plan based on your pet’s condition and regularly monitoring progress significantly impacts the outcome.

A puppy recovering from ectropion surgery

Home Care Focuses on Eye Hygiene and Protection

- Daily Cleaning: Gently wipe around the eyes with a soft cloth to remove discharge and tear stains. - Environmental Management: Minimize exposure to irritants such as dust or chemicals that could aggravate the eyes. - Eye Protection and Prevention of Self-Trauma: After surgery, it is recommended to use an Elizabethan collar (neck cone) to prevent the dog from rubbing or scratching the eyes and causing injury. - Lubrication Management: Because exposed eyes are prone to dryness, protect the cornea with veterinarian-approved artificial tears or lubricating eye drops. - Thorough Monitoring: Consistently check for changes in eye condition, such as redness, pain, or increased discharge, and contact your veterinarian immediately if any abnormal signs appear. - Ongoing Care: Consistent management is essential to prevent corneal damage and recurrence, and to maintain overall eye health.

A caregiver gently wiping around a puppy’s eyes.

Certain Breeds Have a Genetic Predisposition, So Pre-Adoption Screening Is Important

Breeds with loose facial skin and floppy eyelids, such as Bloodhounds, Saint Bernards, Newfoundlands, and Cocker Spaniels, are at a relatively higher risk of developing ectropion. Since ectropion can have a genetic (congenital) predisposition, it is advisable to review the health records of the parent dogs before adoption and consult with a veterinarian about any potential hereditary conditions. Early detection and consistent care are key to maintaining your pet’s eye health.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Is ectropion untreatable?

This is a manageable condition. In mild cases or when there are no complications, treatment involves artificial tears, lubricants, and anti-inflammatory eye drops. If significant secondary lesions such as keratitis or ulcers develop due to exposure, surgery is performed to correct the eyelid to its normal position.

How long does the surgery take?

The duration of the surgery may vary depending on the extent of the ectropion and any accompanying eye conditions. The procedure is typically performed under general anesthesia, and your pet will be allowed to go home once their recovery status has been confirmed. Please consult with your attending veterinarian for a precise schedule.

Can it come back after surgery?

Even after surgery, the condition can recur or complications such as overcorrection or undercorrection may develop. Therefore, it’s important to have regular check-ups with your veterinarian to monitor the position of the eyelids and the health of the cornea.

Can it be managed with medication alone?

In mild cases without complications, the condition can be managed with lubricating and protective eye drops along with anti-inflammatory treatment. However, if severe secondary lesions such as corneal damage due to exposure are present, surgical correction should be considered.

Is ectropion painful?

When the eyelid turns outward, exposing the eye’s surface, it can cause irritation and keratoconjunctivitis, leading to discomfort or pain. The pain may worsen if an infection or corneal ulcer develops.

Comparison of Ectropion Treatment Methods

Item	Treatment Method	Efficacy	Cost	Recovery Period
Eye Drops/Artificial Tears	Temporary protection	Low	Inexpensive	Immediate
Surgical Treatment	Correction for secondary lesions	High	Moderate to High	1–2 weeks
E-collar (Elizabethan collar)	Prevents self-injury after surgery	Moderate	Moderate	Ongoing

Ectropion is managed with lubricating and protective eye drops when mild or without complications, and surgical correction is performed when there are significant secondary lesions such as keratitis or corneal ulcers caused by exposure. Surgery is best done after the facial structures have matured, and eye drop therapy is used for symptom relief and corneal protection.

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References

[1] Gelatt KN, Gelatt JP. (1995). Handbook of Small Animal Ophthalmic Surgery: Extraocular Procedures. Pergamon Press.

[2] Curtis R. (1990). Lens luxation in the dog and cat. Veterinary Clinics of North America: Small Animal Practice, 20(3), 755–773.

[3] Ny Y et al. (2006). Medial canthoplasty for epiphora in dogs: a retrospective study of 23 cases. Journal of the American Animal Hospital Association, 42(5), 435–439.