Why do we get eye boogers?

Protein in your tears. If you have a lot of build up you likely have an allergy that can be treated.

If they aren't green, I can't help you.

Your eye sockets, ears, nose, and throat are all connected inside your head. Mucus in your eyes is most obvious with allergies or an infection (such as pink eye), but smaller amounts are present all of the time. The "sand" in your eyes when you wake up (the origin of the "sand man" myth) is little bits of dried mucus. Many regions of the human body cavity have an internal layer of a mucosal membrane that produces mucus for two main purposes: (1) trapping pathogens and (2) preventing dehydration of your internal tissues.

This is a question for google.

Google it. How lazy are you ?