Why honey, don't you know? He got a hankering for a brand new updated eyeball, so he went to the big Evolution Box Store some forty miles away in the big city of Slime Pit. He picked out the model he wanted from thousands upon thousands of choices. It took quite some time, with so many selections to choose from. He didn't mind the time, nor the work, because he was very set on seeing. He finally choose the XYP model, which saw everything quite clearly.
Now the next thing was to find a skeletal model adjusted to fit his wonderful new eye just right. He tried on many skeletal models, but finally settled on the one he liked best. Thankfully it fit perfectly.
It took a long time, too, because he also had to find all the many, many right accessories to go with his new eyeball, and skeletal model. He knew without all the right accessories all his great effort would be for absolutely nothing. It was all quite an exhausting endeavor, but when he was finally all finished he was exceedingly pleased with his new eyeball.
"He was last heard saying, while toasting to his new eyeball with all of his many still sightless old buddies, "Here's to seeing you!".
Interesting? But why did he pick the model with the inverted photoreceptors for us?