The brand names that manufacture one of the most expensive glasses include Louis Vuitton and Dolce & Gabbana. They make very pricey glasses, definitely not worth the price.
The Optic Jewel Glasses is worth over one million dollars and have over 200 crystals around the frame of the glasses. There are only a few that are made so these are hard to get.
The most expensive prescription glasses are those produced by the big name brands. Prada makes a pair of frames, so does Louis Vitton. I believe Versache might also have some out there.