Just by way of an update on this thread. My 5 year old Optilabs polorised prescription lensed glasses gave up the ghost, I broke the frame and cracked a lens.
Last Thursday I contacted Optilabs for a new set, sending off my order, with my up to date prescription in the post this Monday.
Today my new set arrived, how's that for service.
The cost including postage ?102.45, I think the price is unbeatable for the quality of the product.
See their website <a href=http://www.optilabs.com/homeframeset.html>Optilabs</A>