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Blindness, optic atrophy and sinusitis in the horse
K C Barnett1, A S Blunden, S J Dyson
1Center for Small Animal Studies, Animal Health Trust, Lanwades Park, Kentford, Newmarket, Suffolk, UK. keith.barnett@aht.org.uk
Veterinary Ophthalmology
|December 17, 2008
Summary
Equine vision loss linked to spheno-palatine sinus infections. Advanced imaging like MRI is crucial for diagnosing optic nerve compression and guiding treatment in horses with visual deficits.
Area of Science:
- Veterinary Ophthalmology
- Equine Neurology
Background:
- Visual deficits in horses can range from blindness to transient disturbances.
- Ocular examination may not reveal abnormalities in cases of optic nerve compromise.
Observation:
- Three horses with varied histories of upper respiratory tract infection presented with visual deficits.
- Specialist veterinary ophthalmological examination provided limited diagnostic value.
Findings:
- Infection of the spheno-palatine sinuses was identified as the common cause.
- Sinus distension led to compression of the optic nerves and optic chiasm.
Implications:
- Magnetic resonance imaging (MRI) and computed tomography (CT) are essential for accurate diagnosis.
- Early diagnosis via advanced imaging facilitates timely and potentially successful treatment.
- Spheno-palatine sinus involvement causing visual disturbances is noted in both equine and human medicine.
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