Hi, I had vision therapy for about 4 months, and the 1st session was definitely the hardest on my brain. It took a few hours for it to settle down afterwards. I was also a bit nauseous. The therapist gave me exercises to do at home, as well. And they also bothered me. But each session got a bit better, till I could handle it fine.

Take it easy after you get home, if you can. And rest. That always brings me relief.

Best of luck to you.