I ordered a set of no line bifocals and I liked them except for fact that the only spot you could see clearly was in the middle of the lens.  Called and complained and they said all their no line bifocals were made that way.  Told them I never heard of that and they said it was explained in their blog.  I said I didn't read their blog but read all the FAQ about their glasses and the info on the different type of lens.  They offered me half my money back or 100% store credit minus shipping.