Originally Posted by
secrettrek3
I should add that my prescription is strong for near-sightedness, my sphere is -4.25...
There's a pretty good chance you won't be able to find anything. I am also quite near-sighted, and tried to get wrap around prescription sunglasses, and was informed that they couldn't be made for me. The reason given was because that type of sunglasses have a curve to them which ends up distorting the lenses.
I tried to order them from several local glasses shops, and they would have been able to order them for me (so you can indeed try Lens Crafters), but they all told me that it would be a waste of something in the neighborhood of $500.
So I went with sunglasses with prescription inserts from MEC. Those glasses were under $100 ... and are useless. They had to curve the lense ever-so-slightly which distorted it, and I cannot use them for cycling.
Talk to your Lens Crafters and see what they say.