A blindfold, I hope that is visible. Although it stands for the ability to see, just with your inner eye, fantasy, imagination, being creative, but also empathy, something you do not use your eyes with ("The essential things in life are seen not with the eyes, but with the heart." - Antoine de Saint Exupéry).
Justitia wears a blindfold, too, and justice is very important, I was never good in standing injustice.

This was an assignment for an online art course over at dA.