Probably the cheapest way is to go to a 1/4" peep and see if the larger diameter won't clear it up for you. Otherwise you have to get special contacts or glasses made for correcting astigmatism.

Like I told you when you asked on the bowhunting forum though, I seriously doubt your peep is actually set right. You shouldn't actually see the peep at all, but be able to see THROUGH it clearly.