Last year I found tinted safety glasses with a 2.00 bifocal reading lens. $4.00 each, got several pair. They are OK but not polarized.
Recently was at the Cottage Life show and came across sunglasses, polarized with a 2.00 bifocal. $20.00 each and I got 2 pair, they are very clear and cut the glare. The placement of the corrective lens isn't a problem.