I have been using fit overs, but want to upgrade to Solar Bats. Prescription lens with bi-focals.

Take a long hard look at Costa's.  They have been in the business of making glasses exclusively designed for fishing for years.  The company was started by two eye doctors who sight fished the flats in Bimini for Bonefish.  The company has recently introduced a new formula for their lenses that is nothing short of amazing.  A really neat feature is in the design of the frames.  Many of them prevent back glare which can often be a real issue in bright sunlight on the water.  As a wearer of prescription eye-wear since I was 12 y.o. ( A very long time ago) I can easily appreciate quality when I see it.  One last consideration and warning.  I would strongly recommend that any glasses you fish with have lenses that are polycarbonate.  I have seen several pictures of eyes that were damaged by sinkers, lures, etc that came back into the anglers face on a violent hook-set or when trying to retrieve a hung-up lure.
I get my prescription Costa's custom made by a person in St. Louis who make nothing but glasses for anglers,hunters, and trap shooters.  If you are interested give me an IM and I will provide his name and phone number.

Smitty

AKA Dune Hopper

Sounds good, thanks for your input guys. At this point in my youth I am not in need of any prescription eyewear (crossing my fingers since my twin brother is as blind as a bat haha) but the recommendation for the guy who makes custom eyeware for Costa's is still greatly appreciated Smitty, so thanks for that. I think I am going to go with a pair of Solar Bat Patriots due to them being a little more affordable than the Costas even though they do look awesome.