Eye formation

[Ofnuts]

Very quickly, an attempt:

1. Filters>Render>Cloud>Solid noise, and set large X and small Y to have mostly vertical wiggles
   
2. Filter>Distorts>Polar coordinates (make sure you have "To polar'" checked)
   
3. Color>Map>Gradient map to apply color (maybe add some contrast first)
   
4. Add pupil