Multifocal chorioretinal lesions in Borzoi: causes & care

Multifocal chorioretinal lesions in the Borzoi are linked to a unique condition known as idiopathic retinopathy, also called Borzoi retinopathy or breed-specific choroidopathy. This non-progressive eye disorder manifests as multiple discrete lesions in one or both eyes, located primarily in the peripheral tapetal area of the retina, causing changes in pigmentation and areas of depigmentation.

Diagnosing Multifocal Chorioretinal Lesions in the Borzoi

Diagnosis requires a veterinary ophthalmologist to perform a thorough fundoscopic examination to identify the characteristic round or oval lesions. The vet will take a full medical history and rule out other conditions, including:

• Collie Eye Anomaly (CEA)
• Progressive Retinal Atrophy (PRA)
• Ivermectin sensitivity retinopathy
• Infectious anterior uveitis

Although once thought to be related to PRA, current research confirms that this disorder is stable and does not progress to more serious retinal disease. Testing can begin from seven weeks of age. Advanced imaging techniques and electroretinography can assist with diagnosis.

Breeds Affected by Variants of This Eye Condition

Although idiopathic retinopathy with multifocal chorioretinal lesions is seen primarily in the Borzoi, other breeds can present variants of this condition, including:

• Labradoodle
• Coton de Tulear
• Dogue de Bordeaux
• English Mastiff
• Cane Corso
• Great Pyrenees
• Lapland Reindeer Dog
• German Spitz

Inheritance and Breeding Advice

The exact mode of genetic inheritance is currently unknown, but the condition is believed to be hereditary, particularly in the Borzoi. Responsible breeding practices recommend that any Borzoi diagnosed with multifocal retinopathy be neutered and excluded from breeding programmes to help reduce the risk of passing the disorder on.

Treatment and Management

As the condition is non-progressive, no specific treatment is generally required. Some dogs may experience mild visual impairment but typically continue to live full and happy lives with appropriate care and the understanding of their owners. Owners should provide a safe environment and adapt to any visual limitations their dog may have.

Living with a Borzoi with Idiopathic Retinopathy

Owners should be aware that their Borzoi's vision may be affected, which can impact the dog's ability to see clearly, particularly in low light or unfamiliar environments. However, many dogs adapt well and can thrive with gentle guidance, consistent routines, and a loving home. Regular veterinary check-ups can help monitor any changes or complications.