Simply put, the old rogue was without his vision. He was, however, not without his wits.
Prerequisites: 1st level character
Benefit: You may take a bonus feat. However, you automatically fail all Spot checks and suffer a -10 penalty on Search checks. Moreover, everything has full concealment against you.
At the DM's discretion, you may have a +5 bonus to Listen checks for having keen listening, which helps you move about and the like. Also, many would underestimate somebody who they know is blind.
Special: This feat can only be taken by a 1st level character or awarded to a character who has become permanently blinded through the storyline.