Shadowy rings during render?...

Having an issue.... I can't really explain - so heres a picture, lol.
https://i.gyazo.com/20a3fd9b3079c8c2ae7589fc5ef5e6b0.png
I have no clue why it's happening but it's driving me insane. It's ruining many renders.
Edit:
Shadow ring in main characters eye: https://i.gyazo.com/f5d518328a7be2504336c78cb7a2e565.png
Post edited by LadyStorm on
Comments
Render engine being used? How are you lighting? Is there a geometry shell applied to the model?
Iray - No shell - Lighting is spotlight and Environment.
This is the first time I have ran into this type of issue.
(P.S - Thanks for the quick reply.)
Hmm, that kills a couple of my thoughts. Is it using Iray materials? Which character is it?
Iray Materials. Kenya. It's also doing it for my other character in her eye. :\
Does it happen with other lights and environment maps?