Strange mark on cat's eye

I've just noticed a strange mark/object on my cat's eye.

There is a circle, that looks very much like a small contact lens, on her right eyeball.

The object moves around on her eyeball but doesn't seem to be causing her any pain or discomfort.

Does anyone know what may be causing this and/or how to clear it up?

Thanks!

Leanne

Sorry, I don't. Your best bet is to ask a Vet. WIthout actually looking at it it is hard to tell

Are you sure it's not a hair?