Here is a photo of my cat’s eye up close. She likes to sit on my lap every time I sit down so I thought I might as well take her picture.
As cat’s age, the color of their irises changes and they may have a “lacy” pattern. The edge of the black pupil can also become less sharp and distinct. My Pixie-Bob cat is fourteen and a half.

Great photo Siobhan
Thank you, Brian!
Sweet
Thanks!
Lovely detail – I was not aware their eyes changed with age, interesting.
Yeah, I didn’t know until our current vet pointed it out recently. Our eyes change as well. Mine are green but started out blue.