后囊混浊是由于术后位于晶状体前囊及赤道部的上皮细胞增殖，并迁移至无细胞的后囊所致。

In PCO, residual LECs in the anterior and equatorial regions of the lens capsule after surgery proliferate and migrate onto the previously acellular posterior capsule.

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术后晶状体囊残留的晶状体上皮细胞的增殖、迁移、纤维化生是形成后发性白内障的主要原因。

PCO is caused by the lens epithelial cells retained in the capsular bag following surgery, which proliferate, migrate and transform to myofibroblasts.

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