Well, the reason your first switch from computer screen chess to OTB chess is difficult is it's going from 2d to 3d. So to work on your "OTB vision" you'll need to play some games or do some analysis on a physical 3d board.
OTB vision- without a board??
It could just be me, but I felt like the vision part was overrated. Your mind makes the adjustment better than you'd think.

It could just be me, but I felt like the vision part was overrated. Your mind makes the adjustment better than you'd think.
My first time switching killed me -- I played on Yahoo! for about 3 years before anything else, then one day I got out a board and played a friend and couldn't believe the stuff I missed.
It's no problem now though.
And maybe for higher rated players it doesn't matter at all? I was still pretty green even after 3 years.
What a coincidence! I seem to have the same problem...
One thing I'm thinking of doing is "estimating" the likely variations in my online games before I turn on the good ole' analysis board to see what I've missed.
Scrawls on pieces of paper...I've tried it in Research Practicum class. Didn't work out so well... mostly because I'm not a good artist so I had to rely on algebraic notation...
I'm taking part in my first over-the-board chess tournament at the end of February, and I figured I should use the time in between to get my OTB vision up to speed.
Of course I'll work on it at home, but it seems like a good use of boring ol' Chemistry class to get some more practice in. I can't just show up to class with a big chessboard, though. Does it help OTB vision at all to just draw chess diagrams in my notebook?