有18只眼是后发性白内障（22.0%），其中2眼需进行 YAG激光后囊膜切开术。
The posterior capsular opacity were occurred in 18 eyes(22.0%)with YAG laser capsulectomy on 2 eyes.
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.
结论：根据后囊膜混浊的程度和视力的情况灵活选择激光参数，确保高比例有效的脉冲能量，是YAG激光治疗后发性白内障的关键。
CONCLUSION: We should choose the laser parameter flexibly in order to ensure effective high proportion pulse energy, which is vital in the treatment of after cataract by YAG laser.
结论：根据后囊膜混浊的程度和视力的情况灵活选择激光参数，确保高比例有效的脉冲能量，是YAG激光治疗后发性白内障的关键。
CONCLUSION: We should choose the laser parameter flexibly in order to ensure effective high proportion pulse energy, which is vital in the treatment of after cataract by YAG laser.
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