I'm developing a serious game for collecting behavioral data and I need to convey to each player some status information about the other players in the game. One piece of information I wish to convey concisely (and thus preferably graphically) is (ironically) if a particular person can see or not.
For example, below is a mockup of a status bar for a game with three players:
Is there no more-or-less-conventionalized way of indicating blindness and/or (severe) vision impairment in a multi-user environment to people who can actually see?