Looking at the Book of Iron Might, one could create a special blinding maneuver like so:
The base effect is Blinding Attack: On a successful hit, the opponent is blinded for 1d4 minutes, 2d4 on a critical hit. Base cost: -30 to hit.
Now we can offset this with some drawbacks:
Draws AoO: +10
Effect only (attack does no damage): +5
Full Rround action: +5
Target gets saving throw: +5
So we could stop here: a blinding attack is a full round action that draws an attack of opportunity. Once the character declares a blinding attack, she takes a -5 pentalty to her attack roll. If she hits her target she does no damage, but the taregt must succeed at a Fortitude saving throw (DC = 10 + 1/2 character's level + Wis modifier) or be blinded for 1d4 minutes, or 2d4 minutes on a critical hit.
I think there has been some debate on whether or no one could construct a maneuver with no penalties to hit. I can't remember how that played out, but I don't think it would be unreasonable to balance a +5 bonus by reducing the effect's duration to rounds instead of minutes and dropping the critical effect, so it reads thus:
A blinding attack is a full round action that draws an attack of opportunity. Once the character declares a blinding attack, if she hits her target she does no damage, but the taregt must succeed at a Fortitude saving throw (DC = 10 + 1/2 character's level + Wis modifier) or be blinded for 1d3 rounds.
One could then conceive of a companion feat built along the lines of Improved Sunder or Improved Bull Rush:
Improved Blinding Attack[General]
Prerequisites: Whatever
Benefit: You do not draw an attack of opportunity when attempting the blinding attack special action.
Normal: The blinding attack action draws an AoO.
And so on, and so forth.