Could drug store reading glasses be contributing to post GK headaches?

[buzneg]

The first few days after GK, I felt pretty good.  For about a week after that, I've felt pretty crappy.

I heard one doc says something about the tumor shedding cells as it dies and that can make a person feel crappy after GK for a while.

Reading glasses from the drug store... bad?  They didn't have a negative effect before but I think they may be now.  Coincidence or paranoid?

To be safe, I'll go the eye doc and get prescription readers to be safe.  Also, I haven't started working with the vestibular rehab therapist yet.  Does anybody out there have experience pro or con about this type of therapy?