Peer-reviewed veterinary case report
How common are cataracts in dogs by age group
By Williams, D L et al.·Published in Veterinary ophthalmology·2004·Queen's Veterinary School Small Animal Hospital, United Kingdom·View original on PubMed →
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Original publication title: Prevalence of canine cataract: preliminary results of a cross-sectional study.
- Species:
- dog
Plain-English summary
A study of 2,000 dogs found that cataracts, which can cause cloudy vision, are quite common as dogs age. On average, about half of all dogs will show signs of cataracts by around 9.4 years old, and nearly all dogs over 13.5 years old have some degree of lens opacity. The research also showed that certain breeds may develop cataracts earlier, and the likelihood of developing them increases with age. If you notice your dog having trouble seeing, especially if they are older, it’s a good idea to consult your veterinarian for an eye exam.
People also search for: dog cataract symptoms · how to treat cataracts in dogs · dog eye problems age-related
Abstract
OBJECTIVE: In this study 2000 dogs were examined ophthalmoscopically to determine presence of cataract. MATERIALS AND METHODS: The dogs examined were predominantly from veterinary hospital populations but also from the Waltham Center For Pet Nutrition, rehoming charities and breeding kennels. Prevalence of cataract was thus determined for different age groups (year cohorts). The age at which prevalence of cataract was 50% (C50) was determined indirectly from a fitted prevalence curve. RESULTS: The mean +/- standard deviation of C50 for all dogs in the study was 9.4 +/- 3.3 years. All dogs over 13.5 years were affected by some degree of lens opacity. C50 was determined for animals of different genders and different breeds. For dogs of six breeds sufficient data were available for calculation of breed-specific C50. In these dogs C50 was positively correlated with longevity with a least squares correlation coefficient of 0.74. CONCLUSION: The study yields novel findings regarding the prevalence and incidence of cataract in the dog and forms the basis for considerable further work on the epidemiology and pathophysiology of age-related cataract in the dog.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/14738504/