Understanding Corneal Ulcers in Dogs and Cats

If you have noticed your dog or cat squinting, pawing at their face, or showing signs of eye discomfort lately, you are not alone. Eye issues can be both sudden and alarming for pet owners, especially when your companion seems to be in pain or their eye looks cloudy or red. As we enter October, seasonal changes, allergies, and increased outdoor activity often contribute to a rise in eye problems for pets in Plano and surrounding communities. One of the most urgent conditions our team at Animal Eye Specialists sees is the corneal ulcer—a potentially serious injury to your pet’s eye that requires advanced, specialized care.

In this blog, we will help you understand what corneal ulcers are, how to recognize their signs in dogs and cats, what causes them, and why prompt referral to a board-certified veterinary ophthalmologist at Animal Eye Specialists in Plano, TX gives your pet the best chance for a healthy recovery. We will also cover treatment options, home care tips, and when to seek immediate veterinary attention. If you are searching for expert advice on squinting or eye discomfort in your pet, our experienced veterinary ophthalmology team is here to help.

Recognizing the Signs of Corneal Ulcers in Dogs and Cats

Corneal ulcers are wounds or erosions on the clear surface of the eye, and they can develop rapidly in both dogs and cats. Early recognition is crucial, since untreated ulcers may lead to complications or even vision loss. The most common signs that your pet may have a corneal ulcer include frequent squinting, increased blinking, or keeping one eye closed. You might also notice your pet rubbing or pawing at their face, showing sensitivity to light, or displaying visible redness around the eye. Some pets will develop a cloudy, bluish, or whitish appearance over the surface of the eye. Clear or greenish discharge may also be present, and in severe cases, you might spot a visible defect or divot on the corneal surface.

Dogs are often more obvious with their discomfort, sometimes crying out or refusing to let you touch their face. Cats can be more subtle, choosing to hide or become less active while squinting or tearing up. Since these signs can overlap with other eye conditions, it is always safest to have any sudden or severe eye issue evaluated promptly by a veterinary professional. For more detailed information on squinting and tearing in dogs or cats, you can review our pages about dog squinting or blinking caused by corneal ulcers and eye trauma and cat squinting or tearing, including corneal repair and entropion.

What Causes Corneal Ulcers in Pets?

Understanding why corneal ulcers develop can help you protect your pet and recognize when their eyes may be at risk. In many cases, corneal ulcers are the result of trauma—such as a scratch from a branch, contact with another animal, or rubbing the eye on carpet or furniture. Dogs with protruding eyes, such as Shih Tzus, Boston Terriers, and Pugs, are especially prone to ocular injuries due to their facial structure. In cats, playful swats from other cats or accidental contact with sharp objects are common causes.

Other factors that can lead to corneal ulcers include chronic dry eye (keratoconjunctivitis sicca), chemical irritants, or foreign material trapped under the eyelid. Infections with bacteria or viruses can also contribute, sometimes making the ulcer worse or slowing healing. Some breeds are genetically predisposed to certain eyelid abnormalities, such as entropion, where the eyelid rolls inward and causes lashes to rub against the cornea. Allergies, exposure to dust and pollen, and age-related changes in tear production can further increase the risk of corneal injury for pets living in the Plano area, especially during dry or windy months.

How Veterinary Ophthalmologists Diagnose Corneal Ulcers

Because the cornea is so delicate, accurate diagnosis is essential. At Animal Eye Specialists, our board-certified veterinary ophthalmologist will begin with a detailed history and a complete ophthalmic examination. One of the most important diagnostic tools is fluorescein staining, a safe dye that highlights ulcerated areas on the eye’s surface. This test helps us determine the size, depth, and severity of the ulcer so we can choose the most appropriate treatment. You can learn more about this process by visiting our page on fluorescein staining used to diagnose corneal ulcers and other eye surface injuries.

In some cases, we may recommend additional tests, such as a slit lamp examination for detailed evaluation of the cornea and other eye structures, to assess the extent of the injury or look for underlying problems like eyelid abnormalities or foreign bodies. Advanced imaging and laboratory tests can also help diagnose more complicated or non-healing ulcers.

Treatment Options for Corneal Ulcers in Dogs and Cats

Prompt, specialized treatment is key to a successful outcome. Treatment for corneal ulcers always begins with identifying and addressing the underlying cause. The most common approach involves topical antibiotic medications to prevent infection, as well as pain relief to keep your pet comfortable. In some situations, your pet may require medications to control inflammation or promote healing.

For simple, superficial ulcers, medical management and protective measures—such as an Elizabethan collar to prevent rubbing—are often effective. However, deep, large, or infected ulcers may require advanced interventions. At Animal Eye Specialists, our veterinary ophthalmology team is equipped to perform a range of surgical procedures if needed. These may include corneal repair techniques, conjunctival grafts, or other microsurgical approaches to stabilize and heal the eye. You can read more about our specialized veterinary corneal repair procedures for pets with corneal injuries or ulcers.

Non-healing or complicated ulcers, such as those caused by underlying diseases or resistant infections, will often benefit from our specialized experience and advanced technology. Our specialized care for complicated eye conditions in dogs and cats ensures your pet receives the highest level of attention and expertise for even the most challenging cases.

Throughout treatment, follow-up care is critical. Our board-certified veterinary ophthalmologist will closely monitor your pet’s healing progress and adjust the treatment plan as needed. We will provide guidance on medication administration and home care to support your pet’s comfort and recovery.

At-Home Care and Prevention: Supporting Your Pet’s Eye Health

While not all corneal ulcers can be prevented, there are steps you can take to reduce your pet’s risk and support their healing. Preventing trauma is one of the most effective measures—supervise play with other animals, keep sharp objects out of reach, and avoid letting your dog stick their head out of car windows. For breeds prone to eye problems, regular checkups with your family veterinarian and prompt attention to minor eye issues can make a big difference.

If your pet is recovering from a corneal ulcer, it is important to administer all prescribed medications exactly as directed and to prevent rubbing or scratching of the eyes. Keep the Elizabethan collar in place until your veterinary ophthalmologist confirms it is safe to remove. Maintain a clean environment and monitor for signs of relapse, such as renewed squinting or discharge.

Routine eye checks at home can also be helpful. Look for any new redness, cloudiness, or behavioral changes that might indicate discomfort. For pets with known risk factors—such as dry eye or previous ulcers—your veterinarian may recommend ongoing preventive medications or tear supplements. Any changes in your pet’s eye appearance or comfort should prompt a call to your veterinary ophthalmologist.

When to Seek Veterinary Care for Eye Injuries

Corneal ulcers are always considered urgent, since delays in treatment can lead to complications like infection, scarring, or even loss of vision. You should seek veterinary care right away if your pet is squinting, blinking excessively, pawing at the face, or if you notice any cloudiness, visible wounds, or discharge from the eye. Do not attempt to treat eye injuries at home; over-the-counter products can do more harm than good, and waiting may allow the ulcer to worsen rapidly.

Your family veterinarian is an excellent first point of contact for sudden eye problems, but pets with moderate to severe ulcers, persistent symptoms, or recurrence should be referred to a board-certified veterinary ophthalmologist for advanced care. At Animal Eye Specialists, our team is dedicated exclusively to eye health, providing rapid assessment and personalized treatment plans for pets throughout Plano and surrounding communities. If your pet has recently undergone surgery or is recovering from an eye injury, we also provide ongoing post-operative treatment and follow-up care for veterinary eye procedures to ensure the best possible outcome.

Compassionate, Advanced Eye Care for Your Pet in Plano

Corneal ulcers are a serious but treatable condition when addressed promptly by an experienced veterinary ophthalmologist. By recognizing the signs of eye discomfort early, understanding the potential causes, and seeking advanced care when needed, you can give your dog or cat the greatest chance for a full, comfortable recovery.

If you suspect your dog or cat has a corneal ulcer, or if you are searching for a specialty "ophthalmology vet near me," Animal Eye Specialists in Plano, TX is here to help. Our board-certified veterinary ophthalmology team is committed to providing compassionate, state-of-the-art eye care for pets across Plano and surrounding communities. To schedule a consultation or referral with Dr. Stephanie Beaumont and our team, call (972) 845-9948 or visit our website at peteyevet.com. We are proud to be your trusted local resource for advanced eye health and vision preservation for your pet.

If you have more questions about corneal ulcers, diagnosis, or treatment options, our team is always happy to help guide you and your family veterinarian every step of the way. Your pet’s comfort, vision, and quality of life are always our top priorities.