Welcome!

Since you are in the medical profession, you may have an advantage than most of us had, but you will still learn much from the wonderful folks on this site.
I too started with the sudden onset of double vision and also ptosis. It's now been a year since diagnosis -- crisis in November, thymectomy in December, radiation treatment January-March. It's been a wild ride, but I'm doing OK now. Still taking Mestinon. Handling the heat better this summer than last.