I have a male cat, about 2 years old. He has a sister who is almost the same in color, except my male is more white with blue eyes. Funny thing is instead of a normal defined line around his pupil, the "slit" look, my cat has a very jagged "fuzzy" look. Definitely not a defined line. He gets cross-eyed a bit. I think his vision is ok because he isnt walking into doors or anything and he can still follow fast moving objects.
What I am wondering is if anyone has experienced anything like this with their feline. I have not been able to find anything online or in books that describe what is up my cat's eyes, but I am not experienced with veterinary terms and how to search correctly.
If anybody can give me some helpful info it would be much appreciated.

Thank you!

Is this a ragdoll cat? Domestic cat? Not all cats have clear define pupil eye lines. Brown eyes may look like they have defined pupils where as the closer you look, the fuzzier it can get. Blue eyes are built different. Also, it depends on the brightness of the room/environment. Cats eyes adjust to light and their pupils open and close accordingly. Nothing to be worried about.

I have 3 cats

I think I know exactly what you are talking about. My cat Tigger has this too. When we adopted our cats, we knew that they were part Manx. and part what ever kitty got a hold of the female! We had to take him to the vet one day and the vet tech there had never seen Tigger before. She said he was such a gorgeous Seal Point Lynx. I thought she was nuts. Be she was right. His eyes are of a seal point. They call them Ragdolls. That's why the one person was asking you that. We just always thought he was cross eyed. I sent you a link a pics. that might look like your cats eyes. They are not the greastest, but hope this resolves you question.