Back in June 2010, Chuck posted about a blind photographer, Rosita McKenzie, who was having her work shown at the Edinburgh Art Festival. But apparently Rosita is not unique. There's quite a few blind photographers. Enough for there to be a website devoted to the community of blind photographers, blindphotographers.org. Although the site expands its coverage to include visually-impaired photographers.
There's also an accompanying flickr group: blind photographers. I suspect most of the photos were taken by people who are merely visually impaired. That is, maybe they wear glasses. Because the photos are simply too well composed to have been taken by people who can't see at all what they're doing.