I am posting this reminder here because of something that was just reported on the hyperT forum...
A person's cat had unusually dilated pupils, and seemed to be bumping into things. The cat was taken to the vet tonight, and unfortunately is now blind! High blood pressure had caused detached retina.
There is some hope that the cat will regain partial sight with the BP medication being started.
Many people are not aware that dilated pupils (especially when they stay pretty wide in brighter light) are a sign of high blood pressure in cats. As with humans, high blood pressure can damage all sorts of body systems, including the brain, heart, kidneys and eyes. Middle-aged to older cats can have high blood pressure as a result of common diseases in that age group, including kidney disease and hyperthyroid.
Just a reminder--if you see unusually wide pupils in your cat, take the cat to the vet right away! With quick treatment, the sight can sometimes be saved, and other organ damage can be prevented.
(And have your own blood pressure checked at least yearly; more often if you are being treated for high blood pressure.)