Pigmentary Vascular Keratitis Treatment for Dogs
Pigmentary vascular keratitis is inflammation of the cornea that causes dark pigment and blood vessels to spread across the clear surface of the eye, and without treatment it can lead to loss of vision. At Animal Eye Clinic, Dr. Robert M. Gwin diagnoses and medically manages pigmentary keratitis and pannus in dogs at our Tulsa and Oklahoma City offices.
Request an AppointmentWhat Is Pigmentary Vascular Keratitis?
Pigmentary vascular keratitis is inflammation of the cornea that has many causes. It occurs specifically in dogs because they have cells containing melanin (pigment) at the junction of the cornea and sclera, called the limbus. Inflammation causes these pigmented cells to migrate onto and across the cornea. Blood vessels often grow in along with the pigment, which is why it is called pigmentary vascular keratitis.
This type of inflammation is not uncommon and can lead to vision loss as the dark material builds up on the cornea. Early diagnosis and proper therapy, which is usually medical rather than surgical, are important for maintaining or regaining your pet’s vision.
Types of Pigmentary Keratitis
Immune-Mediated Keratitis (Pannus)
The more aggressive form is an immune-mediated keratitis in which pigment, blood vessels, and granulation tissue invade the cornea. It is frequently seen in German Shepherds and also occurs in several other breeds. This form tends to progress and requires ongoing treatment to keep it under control.
Pigmentary Keratitis in Brachycephalic Breeds
A more benign, slowly progressive form with more pigment and fewer blood vessels is common in brachycephalic, or flat-faced, dogs such as Pekingese and Pugs. Chronic irritation from prominent eyes, nasal folds, entropion, abnormal hairs, or dry eye often contributes. This commonly leads to decreased or total loss of vision if not treated medically.
Treatment and Long-Term Management
Treatment focuses on controlling inflammation and addressing any underlying source of irritation. Medical therapy typically includes topical anti-inflammatory or immune-modulating medications, and many dogs need lifelong maintenance therapy to keep the condition from progressing. When eyelid problems or distichia are contributing, surgical correction of those problems can help. Regular rechecks allow Dr. Gwin to adjust medications and protect your dog’s vision over time. Explore other ophthalmic diseases we treat.
Pigmentary Keratitis FAQs
What does pigmentary keratitis look like?
It appears as brown or black pigment, often with blood vessels, spreading across the normally clear cornea, usually starting near the edge.
Which dogs get pigmentary keratitis?
The aggressive immune-mediated form is common in German Shepherds, while a slower form is common in flat-faced breeds such as Pugs and Pekingese.
Can pigmentary keratitis cause blindness?
Yes. As pigment builds up, it can block vision, which is why early diagnosis and treatment are important.
Is surgery needed for pigmentary keratitis?
Treatment is usually medical. Surgery may help when eyelid problems or abnormal lashes are causing ongoing irritation.
Will my dog need medication forever?
Many dogs need long-term maintenance therapy to keep inflammation and pigment from progressing.
Can the pigment be reversed?
In some cases, early treatment can reduce active inflammation and help clear the cornea, but the main goal is stopping progression and preserving vision.
Protect Your Dog’s Vision
Call (918) 632-0508 (Tulsa) or (405) 751-3821 (Oklahoma City) to schedule an evaluation with Dr. Gwin.