Pet Health

Why Is My Dog’s Eye Swollen?

Discover the common causes of your dog's swollen eye, including allergies, infections, or injury. Learn when to seek veterinary care for your furry friend!
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
Close-up of a dog's face showing one eye swollen, illustrating the condition discussed in the blog post about dog eye issues.

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Noticing that your dog’s eye is swollen can be alarming. Whether it appeared suddenly or has been getting worse over time, it’s natural to worry about what might be causing it and how to help your furry friend feel better. While there are many potential reasons for a swollen eye, understanding the symptoms and taking the right steps can make all the difference in ensuring your dog’s health and comfort.

⚠️ What to Watch For

Swelling in or around your dog’s eye can come with other symptoms that may give you clues about the underlying cause. Keep an eye out for these signs:

  • Redness or irritation around the eye
  • Excessive tearing or discharge (clear, yellow, or green)
  • Squinting or difficulty keeping the eye open
  • Pawing at the eye or rubbing it on surfaces
  • Cloudy or discolored appearance of the eye
  • Visible bumps, scratches, or injuries near the eye
  • Changes in vision, such as bumping into objects

If you notice one or more of these symptoms, it’s important to address the issue promptly. Left untreated, some eye problems can worsen and lead to more serious complications.

🔍 Possible Causes

A swollen eye in dogs can be caused by a variety of factors, ranging from minor irritations to more serious medical conditions. Here are some common causes:

  • Allergies: Allergic reactions to pollen, dust, mold, or certain foods can cause swelling and irritation around the eyes.
  • Injury or Trauma: Scratches, bites, or blunt trauma to the eye area can lead to swelling and discomfort.
  • Foreign Objects: Debris like grass, dirt, or small particles can get trapped in the eye, causing irritation and swelling.
  • Infections: Bacterial, viral, or fungal infections can cause inflammation, discharge, and redness.
  • Conjunctivitis (Pink Eye): This common condition involves inflammation of the tissue lining the eyelids and can lead to swelling.
  • Glaucoma: Increased pressure in the eye can cause swelling, pain, and vision loss if left untreated.
  • Eyelid Problems: Conditions like entropion (inward-rolling eyelids) or tumors can irritate the eye and cause swelling.
  • Insect Bites or Stings: A bite or sting near the eye can lead to localized swelling and discomfort.

Identifying the exact cause often requires a closer examination by a veterinarian, especially if the symptoms persist or worsen.

✅ What You Can Do at Home

For mild cases, there are a few steps you can take at home to help reduce swelling and provide relief for your dog:

  • Inspect the Eye: Carefully check for any visible debris, scratches, or injuries. Avoid touching the eye directly and use a flashlight if needed.
  • Rinse with Saline Solution: Gently flush the eye with a sterile saline solution to remove irritants. Do not use medicated eye drops unless prescribed by a vet.
  • Cold Compress: If the swelling is due to an insect bite or mild irritation, you can apply a clean, cold compress to the area for a few minutes to reduce inflammation.
  • Prevent Rubbing: Use an Elizabethan collar (e-collar) or similar device to stop your dog from pawing at the eye, which could make the problem worse.

While these steps can help in minor cases, they are not a substitute for professional veterinary care if the symptoms persist or are severe.

💡 When to Call a Vet

It’s always better to err on the side of caution when it comes to your dog’s eye health. Contact your veterinarian if you notice any of the following:

  • Severe swelling or sudden onset of symptoms
  • Cloudy, discolored, or bulging eyes
  • Thick or greenish discharge
  • Signs of pain, such as whining or reluctance to open the eye
  • Changes in vision or coordination
  • Symptoms that don’t improve within 24–48 hours

Some conditions, such as glaucoma or serious infections, can progress rapidly and may lead to permanent damage if not treated promptly. A veterinarian can perform a thorough examination and recommend the best course of action, which may include medications, eye drops, or other treatments.

According to VCA Animal Hospitals, untreated eye conditions can worsen and result in complications like blindness or chronic pain (source).

FAQs

Q: Can I use human eye drops for my dog’s swollen eye?
A: No, human eye drops are not formulated for dogs and can be harmful. Always consult your vet before using any medication.

Q: My dog’s eye swelling came on suddenly. What should I do?
A: Sudden swelling may indicate an allergic reaction, injury, or serious condition. Contact your veterinarian immediately for advice.

Book a $49 online vet consultation at https://www.dialavet.com for fast, expert advice.

References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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