The past week, I've been getting dizzy. Yesterday, when I was walking around, whenever I turned my head, I felt this pressuring dizziness. Today, in the morning, my eyes sort of filled with this black vision momentarily. The black filling visions haven't happened in a long time, but one or two months ago, when I was riding the elevator at the library, I had trouble walking/balance problems when I just got out of the elevator. About one complete year ago, one of my eyes suddenly became weird. It was as if someone took my glasses and placed one lens close to my eye and the other lens far away.