That's one extreme exposure! The noise is actually very grain like.
The color tone and crop. Like you said, it works well to highlight the eye. Cool shot :)
-Techo
Eye spy... with my not so little eye...! :-) Definitely round. Definitely captivating. Shot at ISO2500... wow I don't think I have ever tried shooting in that range... it reminds me that I do need to play more with ISO settings too, when required. Nice post. Thanks!