I just got progressive lens glasses for the first time a few months ago. And made the mistake of using them while working on my PC. Result: BAD recurring head

I just got progressive lens glasses for the first time a few months ago. And made the mistake of using them while working on my PC. Result: BAD recurring headaches for the first time in my life. I switched back to my old single-vision glasses til now, but all the providers I deal with are pushing "computer progressives" as the default solution; they look at me like I'm crazy when I ask for a single-vision prescription for use with the computer. Any experiences with "computer progressives" out there in HN-land?