A Clinical Case from the Archives : 16/12/2005

This cat is a fascinating (to me at least!) telediagnosis from Lucy Wheeler – thanks to her for a great image! This is a four year old cat with sudden blindness, dilated pupils and this orange mass in the anterior chamber of each eye. What is going on and what work-up would you do?

Well we haven’t exhausted our work-up yet, but the cat is somewhat pyrexic and definitely hypertensive (200 mmHg). My feeling is that the cat has a hypertensive retinopathy that is making it blind, although we can’t see the retina through that brownish deposit in the anterior chamber. I guess this is a fibrinoid deposit arising from plasma protein exuded through iris vessels because of the hypertension. If it were associated with uveitis there would be a miosis not mydriasis wouldn’t there? I’ve suggested treatmemnt with oral amlodipine to resolve the hypertension, but maybe we should use intracameral tissue plasminogen activator to get rid of this fibrinoid mass.


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