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Neostigmine test was negative. Upper eyelid weakness score was measured before and 10 minutes, 20 minutes, 30 minutes, 40 minutes, 50 minutes, and 60 minutes after neostigmine injection for 7 times for 1 hour. There was no significant improvement in ocular muscle weakness symptoms. (A) Before neostigmine injection. (B) 1 hour after injection.
