Power Word Blind Spell
D&D Description of the Power Word Blind Spell : You utter a single word of power that causes one creature of your choice to become blinded, whether the creature can hear the word or not. The duration of the spell depends on the target's current hit point total. Any creature that currently has 201 or more hit points is unaffected by power word blind.
Deeper info on this Dungeons & Dragons Power Word Blind Spell