Today I noticed that my 10 year old (indoor only) cat Tazzie has developed patches of brown blotches in both her eyes (not huge but definitely noticeable).

She is quite playful and alert but the changes in her eyes kind of threw me into a bit of a panic and I am wondering if this is normal as cats get older or if this is a sign that all is not well?

Any advice would be appreciated. :)

Age does make many changes to a cat but a rapid onset of anything should be examined by a vet or at least call and talk to one. I know my cat's eyes did this, teeth got longer, face got more prominent and bony looking, etc. I'd take him in if I were you, just to be safe!