I wanna CRY!!
Oh, Rach, sweetie

, HOW HORRIFIC!! I've got an artist friend on the Isle of Wight (hope I spelled that right) who has lost the sight in one eye -- and is threatening to lose the sight in the other (TREATABLE optic tumor) -- just because of stubborn, foolish, pig-headed, IGNORANT "mess" like this!!
Never having HAD the EMG or SFEMG, I don't have any advice. Well, maybe.......do you have pets in the house? Are they treated with any insecticides or pesticides? Has your house been recently treated for bugs? Anything like this "might" affect your results -- Mestinon, pesticides, and insecticides all basically act on our systems in a similar fashion.
I feel TREMENDOUSLY blessed today -- having been diagnosed ONLY on symptoms and on positive antibody tests (AChR) -- and, I guess "reinforced" by the fact that Mestinon works for me. *sigh*
Third World?? HUMPH!!! "Old time" medicine seems to be far more humane!!!!!