方法：分析55例患者术前准备经过，包括抗胆碱酯酶药和皮质类固醇激素的应用，补钾及麻醉前用药等。
Methods: to review the 55 MG patients' preoperative preparation, including administration of cholinesterase inhibitor (CHEI), corticosteroid, potassium and preanesthetic medication.
局部应用皮质类固醇激素，使角膜组织抵抗力下降，促使真菌在角膜内增殖而致病。
The local use of corticoid decreased the resistance of cornea tissue. Then fungi would be propagated.
局部应用皮质类固醇激素，使角膜组织抵抗力下降，促使真菌在角膜内增殖而致病。
The local use of corticoid decreased the resistance of cornea tissue. Then fungi would be propagated.
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