Multifocal chorioretinal lesions in Borzoi: causes & care

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

Diagnosing multifocal chorioretinal lesions in Borzoi

Diagnosis requires a veterinary ophthalmologist to perform a careful fundoscopic exam to identify characteristic round or oval lesions. The vet will take a full medical history and exclude other conditions such as:

• Collie eye anomaly (CEA)
• Progressive retinal atrophy (PRA)
• Ivermectin sensitivity retinopathy
• Infectious anterior uveitis

Although once thought related to PRA, current research shows this disorder is stable and doesn’t progress into more serious retinal diseases. Testing can begin from as early as seven weeks of age. Sophisticated imaging and electroretinography may assist diagnosis.

Breeds affected by variants of this eye disorder

Though idiopathic retinopathy with multifocal chorioretinal lesions is primarily observed in Borzoi, other breeds can exhibit variants of this disorder, including:

• Labradoodle
• Coton de Tulear
• Dogue de Bordeaux
• English Mastiff
• Cane Corso
• Pyrenean Mountain Dog
• Lapponian Herder
• German Spitz

Inheritance and breeding advice

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

Treatment and management

Since the disorder is nonprogressive, no specific treatment is typically required. Some dogs may experience mild impaired vision but usually continue to live full, happy lives with proper care and understanding by their owners. Owners should provide a safe environment and accommodate 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 their ability to see clearly, especially 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.