Blind
A character who has been blinded must close their eyes and can not see. They may grope around blindly and may still swing their sword defensively (though they should be careful of the speed of their swings).
The player may crack their eyelids to see, and may always open them for safety purposes. Blinded characters may not run.
A character may take a knee and spend 10 seconds clearing their eyes and they will remove this effect.