I also am using mono-vision correction. One contact for close, one for distance. Problem is...nothing is ever the right distance away! I can wander down the aisle at the market and not be able to read the soup cans because they're too in-between.
I found that I need readers in addition, so buy the really cheapo ones and punch out the lens over the close-up eye so it doesn't change, and let the readers correct the distance eye. My dusk-to-dark vision isn't so great anymore, something I'm going to discuss with my doc this year.
Getting older ain't for sissies, is it?