It can be more useful to read people's experience on a forum, but it's good also to know what the research says for conversations with your doctor:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1772854/

I think I've read studies which say that ptosis is pretty hard to get rid of even with meds. You might look for some of those studies.

As far as your situation, negative tests with ocular myasthenia and early in the disease (or later) are possible.