Distorted iris reflection in cornea when rendering eye

[beyondthephylum]

Trying to recreate the dome like effect eyes have with the iris and cornea as two separate meshes. Even with that, it looks like the iris is being stretched out around the cornea. It looks semi normal from the front, but I'm worried everything I'm seeing in the cornea is being distorted.

Why does this happen?

[damaggio]

https://forums.autodesk.com/t5/arnold-general-rendering-forum/distorted-iris-reflection-in-cornea-wh...