G4 MLP Anatomy Notes - Eyes

EDIT:
Feb 12, 2013: Moar content.
Jan 2, 2013: Changed name of the series for 'marketability' reasons, added a few tidbits.
Dec 3, 2012: Edited to be more objective

If there are stupid errors, bad phrasing, or anything else which makes these notes less awesome, don't be afraid to point it out.

Also check out what I've written for
...the nose: [link]
...the legs: [link]
...the ears, tail, and the core: [link]
...neoteny & acceleration: [link]

Source for photo of horse's eye: [link]
Source for photo of the girl's eye: [link]

The example I pulled as an example of a totally comical art style is from Edd, Edd, n' Eddy. Like the pics of MLP, I consider its usage fair use.