My Smith Turbo CAM goggles have a special insert from Smith that takes prescription lenses. The insert costs $30-ish and then you have Lenscrafters or whomever put regular lenses in there (hint: get anti-glare ones), and you're set.
I thought about getting some of those but then the wife talked me into trying contacts. I gave it a shot and they work great, but I only wear them when I ride other wise I wear my glasses. Just a thought you may consider.