Berniebac wrote: You didn’t mention if your glasses were the newer style progressive lenses. If they are you get blurred vision around the outer edges of the lenses. This can make it difficult to see thru the lenses towards the bridge of the nose. If you have progressives, get a pair with regular lenses and you may find a difference. It made a difference for me.

Yeah, what he said. I started stumbling in the woods a few years back and couldn’t figure out why. Eventually I linked it with wearing my new-to-me progressive bifocals – I wasn’t seeing the ground properly. I immediately got a single vision pair for the woods, which is all I wear now while in the woods and whenever shooting (three under and instinctive). Makes all the difference!