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Pendular nystagmus in dairy cattle.
Journal of the American Veterinary Medical Association
|April 15, 1983
Summary
In dairy cattle, pendular nystagmus (rapid eye oscillation) was observed in 15 of 2,932 animals. This condition appears benign and is not linked to other neurological issues.
Area of Science:
- Veterinary Ophthalmology
- Animal Neurology
Background:
- Nystagmus, characterized by involuntary rapid eye movements, can occur in various species.
- Understanding the prevalence and nature of nystagmus in dairy cattle is important for accurate diagnosis.
Purpose of the Study:
- To investigate the occurrence and characteristics of pendular nystagmus in mature dairy cattle.
- To determine if pendular nystagmus is associated with other health problems in cattle.
Main Methods:
- A survey was conducted on 2,932 mature dairy cattle over a 1-month period.
- Ophthalmic examinations were performed to identify and document nystagmus.
Main Results:
- Fifteen cattle (0.51%) exhibited pendular nystagmus in one or both eyes.
- The condition was present from shortly after birth in 2 animals; onset was unknown in others.
- No associated physical or neurological problems were identified.
Conclusions:
- Pendular nystagmus in dairy cattle appears to be a benign condition.
- It should not be misdiagnosed as a symptom of serious neurological disease in cattle.