Super Hero MS Vision?

What is with my MS vision lately???    Although that sounds rather Super Hero-ish I don't think it is.  I went early today to do some grocery/Christmas shopping at Sam's and Wal-mart.  When I walked in to both stores the brightness or something about the lights almost dropped me to my knees.

Am I a vampire??  no, that's the sun.   Is the bright fluorescent lighting messing with my head??  Maybe all the wide-open space? 

Whatever it is when I go to those stores of that type my vision gets rather swirly and I just want to cover my eyes.  Throw in some vertigo and instant panic and my shopping mood comes to a halt.   

Maybe it's not MS.  Maybe it's just me. Maybe I have some kind of allergy to discount shopping.  

If anyone else with MS has this issue then whew!  I feel better.  I would google this symptom but I'm not a fan of all thousands of other ailments it might say I have!!