Evidence-based articles on Collie Eye Anomaly and hereditary eye conditions, drawing from 28 years of clinical practice and peer-reviewed research.
Expert guidance on CEA puppy screening protocols, including optimal examination timing, fundoscopic techniques, the 'go normal' masking phenomenon, and why the 6-8 week window determines diagnostic accuracy.
Should carrier dogs be bred? What ethical framework should guide breeding decisions when a dog carries the CEA mutation? A veterinary ophthalmologist's perspective on balancing breed health, genetic diversity, and responsible breeding practice.
Does diet, supplementation, or environmental exposure influence Collie Eye Anomaly severity? A critical review of the evidence — and an honest assessment of what we know, what we don't, and what breeders sometimes claim.
How do kennel clubs and breed registries in the UK, USA, Europe, and Australia handle Collie Eye Anomaly? A comprehensive guide to registration requirements, endorsed breeding schemes, and how different systems approach CEA transparency.
Collie Eye Anomaly in Border Collies differs in important ways from other affected breeds. Exploring prevalence figures, working dog implications, breed-specific testing strategies, and how the working Border Collie community approaches CEA management.
A specialist veterinary ophthalmologist explains exactly what is observed during a CEA examination — the instruments used, the specific features identified, how findings are recorded, and why specialist examination matters.
Your puppy has just been diagnosed with Collie Eye Anomaly. Here are the twelve questions I hear most often from new owners, answered honestly by a veterinary ophthalmologist with nearly three decades of experience.
A current assessment of surgical interventions for Collie Eye Anomaly complications, including retinal reattachment surgery, laser photocoagulation, and emerging therapies. What works, what doesn't, and realistic expectations.
Can a dog with Collie Eye Anomaly compete in agility, work as a herding dog, or serve as a guide or assistance dog? A practical assessment of how CEA affects working dog capabilities across different disciplines.
A deep dive into the molecular biology behind Collie Eye Anomaly. How the NHEJ1 gene deletion disrupts eye development, why the same mutation causes variable outcomes, and what this means for testing and breeding.
How Collie Eye Anomaly is diagnosed at different life stages, from the critical 6-8 week puppy window through adulthood. What changes, what stays the same, and why age matters enormously for accurate detection.
Everything Rough Collie breeders and owners need to know about Collie Eye Anomaly: historical prevalence, examination protocols, breeding strategies, and the road toward a healthier breed population.
How retinal detachment develops in Collie Eye Anomaly, recognising the warning signs, what constitutes a veterinary emergency, and the surgical and medical treatment options available for affected dogs.
Why the same NHEJ1 mutation produces vastly different clinical outcomes. Exploring the modifier genes that influence Collie Eye Anomaly severity, current research findings, and implications for future genetic testing and breeding decisions.
A global survey of Collie Eye Anomaly prevalence across countries and breeds. Examining which national breeding programmes have achieved the greatest reductions and the strategies behind their success.
A detailed guide to choroidal hypoplasia grading scales in Collie Eye Anomaly. How ophthalmologists classify severity, what each grade means clinically, and how to incorporate grading data into breeding decisions.
Collie Eye Anomaly is not limited to Collies. How CEA presents in Australian Shepherds and Shetland Sheepdogs, breed-specific prevalence data, and why screening protocols must be tailored to each population.
Practical breeding protocols for reducing Collie Eye Anomaly whilst maintaining genetic diversity. Evidence-based strategies from programmes that have achieved dramatic improvements.
A comprehensive guide to Collie Eye Anomaly, from mild choroidal hypoplasia to severe colobomas. Understanding why the same genetic mutation produces vastly different clinical outcomes.
Comprehensive guide to DNA testing for Collie Eye Anomaly. Comparing laboratories, understanding the NHEJ1 mutation, interpreting results, and why genetic testing complements clinical examination.
Practical guidance for owners of dogs diagnosed with Collie Eye Anomaly. Understanding prognosis, monitoring for complications, environmental adaptations, and maintaining quality of life.
A detailed walkthrough of the CEA screening examination from a veterinary ophthalmologist's perspective. Equipment, techniques, and what specific findings we document.
