As long as you haven't gotten effective treatment yet, you might note that the following condition is associated with oscillopsia.

http://edoc.ub.uni-muenchen.de/14000...gel_Rainer.pdf

(English starts on p. 12)

Meds to treat it, apparently no matter what the etiology:

http://www.efns.org/fileadmin/user_u...scillopsia.pdf

(See p. 3)

If you're interested in the MS and MG meds:

http://www.ncbi.nlm.nih.gov/pubmed/21734596

It's all a little vague as far as what it may all "mean" but maybe some of this could help figure out a med which would work.