Why did you doodle eyes?
I don't really know.
I think when I was younger I really connected to the whole 'eyes are the windows to the soul' idea. So perhaps subconsciously drawing eyes has something to do with that - like what I'm drawing is a representation of the idea of a soul seeing as the soul has no universal visual symbol attached to it.
Another idea is that perhaps it's a human connection thing - when we interact with people in person, the eyes are what we hold focus to. Could doodling eyes be a subconsciousness desire for interaction with other people? Maybe - and when you look at the fact that my doodles, for example, occurred during class time or when I'm by myself or whilst on hold on the phone, these are activities where I'm not interacting intimately with anyone, so it seems plausible that the doodles occurred during moments when interacting with someone might have felt more stimulating than the task at hand. Or maybe it's not even to do with interacting with a person - if I somehow attach eyes to the soul, and I doodle them during boring activities, it could easily be a reflection of my desire to be doing something soulful/passionate instead of something boring.