Finished UVing and started texturing my new Eyeball model shown earlier.

I went with a UDIM mapping with the Eyeball occupying the 0-1 tile and the Cover the 1-2 tile...

I managed to map it so there is a minimum of distortions overall, there's a tiny bit of stretching but nothing that will show on the textures themselves or at least not noticeable. Here's the main Eyeball  with a UV checker applied, green indicating the iris material

The Cover

Wires Eyeball

Wires Cover

Templates

I also started the texturing process. For this I'm repurposing some eye maps I made for the Nova Poser figure; as I created those textures with each element on a seperate layer in a psd, it was easy enough to rescale and reposition everything to fit these UVs and then fix seams with the 3d painting tools in Mudbox. I mostly used the clone tool there.

Here's an example texture for the Eye...

A turntable preview animation out of Poser, one level of subdivision 

This new Eyeball should be optimal for my upcoming projects, seamlessly and over all mapped. All that needs to be done is a bit more texturing. I'm very happy with how this turned out...