Okay, here we go. Imported a Poser scene into CarraraPro 4.1, using the TransPoser1 included in the package. Figure is one of the Mil kids, with a Thornworks texture package. Deleted all the lights from the Poser scene and set up custom lighting in Carrara.

Top render is with a single Distant Light, all default settings.

Middle render is with the Distant Light set to invisible and "Sky Light" enabled in the Global Illumination box. Notice the dark eyes. In fact, the outline of the actual eyelash mesh is quite obvious, and that is what appears to be casting a shadow. I did a couple of renders with no transmap at all and the lashes set to 100% transparency for the same effect.

Lower render is best result after ten hours of work. Notice the render settings. Setting the engine to tens of thousands of photons, changing the photon map, including indirect light, clicking and unclicking "light through" or "shadows," setting quality to highest or lowest -- none made a significant diference to the shadows.

The lower, incidently, is with the TransPoser-created channels tossed and a new shader that uses alpha channel with the transmap below a Shader Ops filter. Of course "no light interactions when fully transparent" is checked.

She has black eyes, but I'm the one who's ready to cry.