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Could my cat's dilated pupil be a symptom of FIV infection?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 11 years and 1 month old | 11 lbs

I have been noticing that one of the pupils in my 12 year old cats eyes seems to stay dialated. I took him to my vet and she did bloodwork in the office. My office test showed he was FIV negative, who had tested around 2006 when he wondered up in our lives. But the bloodwork we sent off showed a strong positive. If he proves to be true FIV positive, could that be causing the eye issue?

1 Answer

Most Helpful Answer

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Answered By Dr. Davis

Veterinarian

Published on August 24th, 2017

Yes if he's FIV positive he may have inflammation in the eye causing the pupil dilation. Smokey may have gotten infected just before you did the first test that is why it didn't show up. Many cats live normal lives with FIV. The important thing is to get immediate treatment if he gets a cold or infection, stops eating or otherwise seems sick. With supportive care these infected cats usually recover. Since his immune system is compromised with FIV he is more likely to get an infection and also some blood disorders and tumors. Hopefully he isn't infected. Thanks for using Petco Pet Education Center, formerly Petcoach to help you get answers to your veterinary questions.

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