I realized I didn't have my glasses on.
I remembered they were in the bathroom, where I left them last night.
So I got up, got to the bathroom... turned the lights on, and left.
Only when I sat down and looked at the screen did I realize I still didn't have my glasses on.
I could remember getting up, but couldn't remember what I'd done at all. It was like the last 30 seconds were just entirely gone.
When I got to the bathroom for the second time and saw the lights on I remembered.
ADD really is something.