Canine Multifocal Retinopathy in Dogs
Canine Multifocal Retinopathy is a low-severity eye condition that can affect dogs of all ages and breeds. Canine multifocal retinopathy (CMR) is a hereditary eye condition caused by mutations in the BEST1 gene. It produces grey-brown retinal lesions that often resolve spontaneously and rarely cause significant vision loss, distinguishing it from PRA. It is documented across 5 breeds, though prevalence and severity can differ significantly between them. It typically becomes apparent at Under 1 year. Early signs to watch for include retinal lesions visible on ophthalmoscopy, usually no vision loss, lesions may resolve or persist, and occasionally mild vision changes. When treatment is required, costs are estimated at £0-£200 (monitoring) depending on severity, location, and the specific intervention needed. Canine Multifocal Retinopathy has a hereditary component, so health-screening certificates from the breeder are strongly recommended for predisposed breeds. This page covers symptoms, treatment options, and preventive steps — along with breed-specific information where available.
Signs & Symptoms
The following symptoms are commonly associated with Canine Multifocal Retinopathy in dogs. If your dog displays several of these signs, consult your vet promptly — early diagnosis typically leads to better outcomes.
- Retinal lesions visible on ophthalmoscopy
- Usually no vision loss
- Lesions may resolve or persist
- Occasionally mild vision changes
Treatment Overview
No treatment is required as the condition rarely affects vision significantly. Monitoring by an ophthalmologist is recommended.
Typical onset: Under 1 year
Prevention & Screening
While not all cases of Canine Multifocal Retinopathy can be prevented, the following steps reduce risk or enable earlier intervention:
- DNA test available (BEST1 mutation) for several breeds
- Screen breeding stock before mating
Estimated Treatment Cost
Treatment for Canine Multifocal Retinopathy is estimated at £0-£200 (monitoring), depending on severity, the specific intervention required, and your location. Costs may be higher for surgical procedures or ongoing management. Comprehensive pet insurance covering hereditary conditions is strongly recommended.
Breeds Affected by Canine Multifocal Retinopathy
The following 4 breeds are documented as being susceptible to Canine Multifocal Retinopathy. Click any breed to view breed-specific information about this condition, including prevalence and recommended screening.
Looking for more information? Browse all dog health conditions or explore the health guides for in-depth breed care advice.