Causes of Pigmentary Keratitis in Dogs
Pigmentary keratitis is the direct result of repeated irritation and inflammation from structural, environmental, or infectious conditions. The pigmentation is formed when chronic inflammation prompts the collection of melanin granules that embed and darken the innermost layer of the cornea. Most commonly, this condition is seen in brachycephalic breeds including Pugs, Boxers, Bulldogs, and French Bulldogs.
There are several possible causes of inflammation that can cause pigmentary keratitis, including:
Symptoms of Pigmentary Keratitis in Dogs
The most prominent symptom is a visible pigment deposit within the cornea. Sometimes it can be seen in normal light, or it may need a closer look. It may appear in one or both eyes. Other symptoms that are related to an underlying cause may include:
Causes of pigmentary keratitis in dogs
Chronic eye irritation and inflammation are the primary causes of pigmentary keratitis. Conditions that can result in eye inflammation or irritation include:
Pigmentary keratitis may also be inherited, and the underlying cause for the condition is not found in all cases.
A black spot, brown pigment or a black film on your dog’s cornea are all symptoms of pigmentary keratitis. Other symptoms may include:
The pigmentation usually appears at the inside corner of the eye and expands to cover the central part of the cornea and the pupil. If most of the eye is covered by the pigmentation, light can’t enter the eye, and your dog may have trouble seeing.
Many dog owners don’t know about pigmentary keratitis. If your dog has any of these symptoms, take them to your vet as soon as possible.