it's hard for me to look in anyone's eyes, even my own mother's for more than a second. to me, eye contact means anger, hostility, and aggression. my father would angrily force me to look him in the eye as a child and i couldn't do it because he had big, blue, scary crazy nazi eyes. then there's the implication of genetic inferiority, feeling like i "have no right" in the eye-contact pecking order because i have brown eyes. and it also means intimacy of a sexual nature, because the only people i can make eye contact with have been boyfriends, so therefore i don't want to imply i'm hitting on someone and have them be offended.
it seems to have different levels and factors. if a person is wearing glasses, i find it easier to maintain eye contact a little longer, because of that barrier. the more female, young, tall or caucasian a person is, the less i am able to make eye contact.
lastly, i don't see what the big deal is about eye contact. it's just an organ.