How to Draw Eyes

When you learn to draw eyes, it is useful to think about the anatomy of the eye. Watch a friend's eyes as they look from side to side. You can see that the eyeball is not a perfect sphere. The cornea bulges out in front of the iris (the colored part), so that the while the iris looks flat, reflections from the front of the eye show a curved surface.

Note that when viewed from an angle, the pupil sits in the plane of the iris, and being in perspective is oval rather than circular.