6结论

    IOL抵抗PCO的能力可以归纳为形成囊袋弯曲结构的品质。其主要因素为方边设计，但IOL材料的生物学特性对囊袋弯曲的形成也有一定的作用。其他因素是囊袋弯曲能否360度隔离光学部，以及囊袋弯曲的力量。囊袋弯曲的力量由光学部材料，尺寸，IOL设计，及手术因素所决定。其中手术因素又包括适当大小的环形连续撕囊，彻底清除皮质，及IOL囊袋内位置等。目前的一些革新设计，如单片式设计，可能降低囊袋弯曲结构的长期效应。其他，如圆边前缘，并不降低囊袋弯曲的品质。由于皮质再生产生的Soemmering’s环结构是IOL设计的障碍，开发既能加强囊袋弯曲结构品质，又具抑制皮质再生功能的新型IOL值得我们充分期待。

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