Peer-reviewed veterinary case report
Retinal structure and blood vessel changes in dog retinal dysplasia
By Ripolles-Garcia, Ana et al.·Published in Veterinary ophthalmology·2022·Department of Clinical Sciences & Advanced Medicine, United States·View original on PubMed →
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Original publication title: Retinal structural and microvascular abnormalities in retinal dysplasia imaged by OCT and OCT angiography.
- Species:
- dog
Plain-English summary
A 5-year-old mixed-breed dog was diagnosed with retinal dysplasia, which caused vision problems. Advanced imaging techniques showed structural changes in the retina, including abnormal blood vessels and areas where the light-sensitive cells were damaged. The imaging helped veterinarians understand the specific issues in the dog's eyes, revealing both the outer and inner layers of the retina were affected. While the study focused on imaging techniques, it highlights the importance of advanced diagnostics in identifying eye problems in dogs.
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Abstract
OBJECTIVE: To describe the in vivo structural characteristics of multifocal and geographic retinal dysplasia visualized with advanced retinal imaging including confocal scanning laser ophthalmoscopy (cSLO), optical coherence tomography (OCT), en face OCT, and the novel vascular imaging technique OCT angiography (OCTA). DOGS STUDIED AND PROCEDURES: Two dogs were diagnosed with unilateral multifocal or geographic retinal dysplasia and underwent advanced retinal imaging under general anesthesia at the Retinal Disease Studies Facility of the University of Pennsylvania. RESULTS: In both cases, the morphological pattern of the lesions was similar including outer retinal folds that invaginated and formed tubular retinal rosettes, surrounding a central inner retinal thickening (multifocal) or plaque (geographic). The two dogs had multiple vascular anomalies in the lesions such as increased tortuosity, abnormal change of vessel diameter including aneurysms and capillary network disruption. We also identified increased autofluorescence by AF cSLO with short wavelength light source (488 nm and barrier filter at 500 nm), and several areas of photoreceptor loss associated with the lesions. CONCLUSION: The use of OCTA allowed the identification of microvascular abnormalities associated with multifocal and geographic retinal dysplasia in two dogs. To our knowledge, this is the first report where the dye-free OCTA technique is used to study vascular lesions in canine retinas.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/34808028/