Years ago, when I was in college, the eyesight (near-sightedness) in my left eye degraded quickly and by the time I saw the eye doctor, I had stopped "using" my left eye, which was causing me to feel nauseous all the time, especially when driving - looking back and forth between the road and the instrument panel. They prescribed what I think you are talking about.
I have no idea the cost, but for me, it involved going to an optometrist's office and spending a few half-hours (I think?) a week doing various "games" where they tried to train my eyes to work together again. Oh, and the other critical part of this was to have glasses that worked for both eyes so that they were both feeding my brain clear images. For me it seemed to work, but I have no idea whether simply the new glasses that were the right prescription would have worked just as well without the eye therapy exercises.
Best of luck!
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