Brown Spot on Cat’s Eye

so my cat starting getting a brown/orange spot on her eye…..i’m not sure if that’s normal. any advice? should i bring her to the vet? left picture is from july 2020. you can see a slight brown spot. and the right is from yesterday.

Hello!  Thankyou for posting in here and well done on your sharp eyes.  The answer is that yes, I would be concerned about this; cats irises are usually one colour and do not change but there is a clear mark in the anterior chamber here and it is growing.  Cancer and cysts of the anterior chamber are both quite common and although I am no opthalmologist, as a vet I would be speaking to either a pathologist or eye expert about this as soon as possible, in order to rule anything worrying out.