At the BBQ tonight, I found myself talking to a man about my somewhat unconventional habit of going blind. One of my friends had apparently mentioned something about it and he had quite a few questions. What made the exchange a touch unusual was the fact that he's blind.
His questions were trying to pin down the feeling I get when my sight fails. Having once been a sighted person, he remembers the day that his blindness struck as a pretty horrific event. Therefore, he had a hard time imagining going through the experience more than once.
Having described the typical migraine attack to him, he said that it sounded somewhat familiar. Except, of course, that his sight didn't return. After a slightly awkward pause, he laughed and said 'but at least I got a free dog out of it'.