Power Word, Blind

When a power word, blind is cast, one or more creatures within spell range and area of effect will become temporarily sightless. 

The spell affects up to 100 hit points of creatures, but the duration is dependent upon how many hit points of creatures are affected. If 50 or less points are affected, blindness lasts for 2 to 5 (d4 + 1) turns, If 51 or more hit points of creatures are affected, the spell duration is but 2 to 5 rounds. 

Note that the spell caster must indicate which creatures he or she desires to affect with the spell, noting one as target center, prior to determining results. Creatures with over 100 hit points are not affected.

Blindness can be removed by cure blindness or dispel magic.