Hubbard said she just woke up one morning after battling an infection and found her world had turned sideways.
"I sat up and I told my husband, 'something's not right,'" she said. "I'm dizzy, everything's crooked. My floor, my bedroom was literally in my eyes sideways."
There are plenty of skeptics who say Carrick's methods do not pass scientific muster, and yet Carrick said he has months-long waiting lists with people desperate to see him for treatment. When he treats Hubbard, he walks her through an exercise where he has her close her eyes and try to relax.
"I look very, very carefully and what's happening with her eyes, with her heads, the degree that her pupils are open or closed, and then her ability to track," Carrick said. "We find that if we do a certain motion, and we get a different tracking, this is going to have a good probability of working."
Can Will and Stacey get better with Carrick's help? Tune into "Nightline" tonight at 11:35 p.m. ET to find out what happens when they enter his treatment program.
For more information about Carrick's treatment program, visit the Carrick Institute website.