I too use the NYX glasses, but in my case I had trouble with the prescription insert on the frames that Piedmont sells (the Carbon style). I spoke to the NYX guys and found that they sell a variety of frame types. The one that Piedmont carries holds a lenses that is a single piece, the NYX guy exchanged this for the Classic Competition style which contains separate left and right lenses. In my particular case this worked better and I did not experience side-to-side distortion with the prescription insert in the Classic Competition. Of course everyone’s face is different and I've seen several people that use the prescription insert with the Carbon style with no problems either.

Piedmont put together a special package with NYX that has a good combination of lenses for pattern competition ([link=http://www.piedmontmodels.com/nyx_rc_glasses.htm]http://www.piedmontmodels.com/nyx_rc_glasses.htm[/link]). To view additional lens options or to view the different frame styles you can also check out the NYX site ([link=http://www.nyxgolf.com/styles.html]http://www.nyxgolf.com/styles.html[/link]).

I was really impressed with how helpful the NYX guys are and how willing they are to make their customers happy.

KeithB