Drawing with foundation: Eyes

I see a lot of tutorials that either tell you how to draw something with rigid, stylized guidelines and no prior insight into anatomy (save some keywords and the occasional funfact)... Or tutorials that show you how to create something beautifully, but also lack information or just have gaps. This is a new mission to provide artists with drawings and facts (and the occasional reference image) to draw with a strong anatomical foundation. These are things artists need to know; not 'just-cartoonists', and not as in-depth as a doctor may need to know. I'm trimming the fat for YOU!

I hope to make others, especially one for the mouth and one for the nose, then move on to other parts. I'll kinda post these on a "I studied this tonight, here're my notes, go crazy" basis. AKA if I'm not doing a book report or something more substantial.

All references/irises from Google (save the one in the bottom left, but credit is given. It's a gorgeous photo, go look)
I drew/wrote everything but the irises.