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Hypertensive retinopathy and choroidopathy in a cat
András M Komáromy1, Stacy E Andrew, Heidi M Denis
1Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, FL 32610-0126, USA. komaromy@vet.upenn.edu
Veterinary Ophthalmology
|January 24, 2004
Summary
Amlodipine besylate successfully treated vision loss in a cat with hypertensive retinopathy. This L-type calcium channel blocker lowered blood pressure, restoring sight and improving retinal function.
Area of Science:
- Veterinary Ophthalmology
- Cardiology
- Internal Medicine
Background:
- Systemic hypertension is a common condition in older cats, often leading to ocular complications.
- Hypertensive retinopathy and choroidopathy can cause significant vision impairment, including retinal detachment.
- Early diagnosis and management are crucial for preserving vision in affected animals.
Observation:
- A 17-year-old Domestic Short-haired cat presented with bilateral hypertensive retinopathy and choroidopathy, complicated by bullous retinal detachment.
- The etiology of the systemic hypertension remained idiopathic (unknown).
- Ophthalmic examination revealed severe retinal changes consistent with sustained high blood pressure.
Findings:
- Oral administration of amlodipine besylate, a potent L-type calcium channel blocker, effectively reduced the cat's blood pressure.
- Following blood pressure normalization, the cat experienced a significant improvement in vision.
- Electroretinography confirmed enhanced retinal function and recovery after treatment.
Implications:
- Amlodipine besylate is an effective therapeutic option for managing systemic hypertension and associated ocular disease in cats.
- Prompt treatment of hypertensive retinopathy can lead to vision restoration and improved quality of life.
- This case highlights the importance of blood pressure monitoring and ophthalmic screening in feline patients.
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