Hi SaskCat20,
Have a chat with your local optometrist and their staff, they should be able to prove you with a regular or prescription
pair of sunglasses. These lenses from an optometrist are a bit more expensive, but have all the safety standards needed for your eyes.
Make sure you tell them your an angler and would like the polarized lenses.
There are also extra options to add, like scratch resident guards as well as other things.
I just ordered a pair of prescription sunglasses myself the other day.
WW