The listing, Unique Green Cat's Eye Sphere- has an eye, please read has ended.
The eye is a spot on one cap of the sphere with the cat's eye line located as an equator. Although it appears strikingly in the photo, here 1st picture, it's actually is hard to see from afar, just a spot of slightly darker green. Up close it's clear and acts as a binocular. It magnifies what ever is below it. You can even read using these!