Blindness will prevent you from seeing the world around you.
Cured By: Purity dust wafer.
Afflicted Line: You feel your vision grow dark as the sight of the world leaves you.
Diagnose Line: blind.
Cured Line: The sight of the world returns to you.
Caused By: Niricol (Poisons)
NOTE: blindness also acts as a defense from some sight-based attacks, such as Glamours.