视网膜缺血再灌注损伤是多因素综合作用的结果，主要包括氧自由基的损伤作用，细胞内的钙超载现象，白细胞作用以及细胞凋亡等。

Multiple factors cause retinal ischemia-reperfusion injury, including the injury effect of oxygen-derived free radicals, intracellular calcium overload, the action of leucocyte and apoptosis.

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其中K1、K2型肺炎克雷伯杆菌的抗嗜中性白细胞之吞噬作用及抗细胞内杀伤作用强于非K1、K2型，因此，K1、K2型流行率较高，毒性较强。

Where K1, K2 Klebsiella pneumoniae anti-type neutrophils and phagocytosis and intracellular killing effect against stronger than non-K1, K2 type, therefore, K1, K2-based prevalence of high toxic.

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