Ghostship, the skin and eyelash textures from your images posted 17 Sept are awesome, but I think the eye reflection is wrong. Eyes aren't glass balls. These three images are all portrait images, and one thing that is missing from all three is the surface reflection of the entire scene. I think the problem is in the cornea; the default mesh allocates it a material zone, but it has no effective shape.

Of these images, two are studio shots; that means the room was almost certainly dark so only the light aource is visible. Not an entirely fair comparison to your images, given that they are in a wide, well lit environment.

The image lower left is an outdoor shot (as indicated by the dilated pupil and how bright the iris is, and the fact the person was supposedly shooting in the desert) but there is still no real 'reflection' of the scene as you are getting.

I tend to wind back (halve) the value for reflection on the cornea after running EzSkin. Snarly's values are probably correct if the geometry of the eye was correct. My adjustment isn't ideal, but it's a quick fix to stop haveing mirror ball eyes.

While it is possible to get that horizon line across the eyeball, it's not a common thing to see. It certainly shouldn't be in every render.