Spiritual blindness is different from eyes that are not functioning properly or are ruined. Spiritual blindness has to do with allowing our lives to be the final authority on what is accepted and true. It is blindness because we are not the authority. When we make ourselves the authority, we can only reflect upon our projections of reality. So, we surround ourselves with a type of knowledge limited to ourselves. This excludes knowing what is beyond us because we cannot admit contradictions to the biases of our fleshly mind. Being impressed with ourselves is a little like being in a room of mirrors, wowed at the seeming infinite, while after all being in a small room.