My cat suddenly has 2 different size pupils.

Thanks for reaching out with your concern about your cat’s eyes. What you’re describing, known as anisocoria, is when a cat has pupils of differing sizes. There are a few potential causes for this condition. It might be a result of an eye injury, neurological issues, or something as simple as light exposure changes. In some cases, it could also be due to more serious problems like glaucoma, uveitis, or high blood pressure.



At home, you can observe your cat's behavior—sit in a darker room and see if both pupils adjust to the light change, and check if your cat seems more lethargic than usual or is rubbing their eyes a lot. If your cat appears uncomfortable, is pawing at the eyes, has discharge, redness, or if the anisocoria doesn’t resolve or worsens, these could be signs of a more serious condition that requires prompt veterinary attention.



I recommend monitoring your cat closely for any additional symptoms such as changes in appetite or behavior, as these could help in diagnosing the issue. It’s a good idea to book a video consult with Dial A Vet so we can take a closer look at your cat’s eyes and medical history to determine the best course of action.