方法：前瞻对照试验。选择2012-05/2014-02入院的眼轴≥28mm的高度近视合并或不合并白内障的患者，分为两组，行超声乳化白内障吸除术，分别植入Bigbag人工晶状体和Sensar人工晶状体，观察术后6mo的并发症、晶状体后囊的状况，比较术前术后晶状体后囊到视网膜距离的差值。

结果：共有52例63眼纳入研究，Bigbag组24例30眼，其中男9例11眼，女15例19眼； Sensar组28例33眼，其中男12例14眼，女16例19眼。术后6mo时，Bigbag组术前术后晶状体后囊到视网膜距离的差值为1.49±0.06mm，与Sensar组(1.67±0.09mm)相比，差异有显著统计学意义(P<0.01)。术后6mo时Bigbag组有2眼出现后囊膜皱缩(6.7%)，Sensar组有9眼出现后囊皱缩(27.3%)，差异有统计学意义(P=0.031)。

结论：Big bag人工晶状体由于囊袋内的稳定性高，后囊膜皱缩的发生率也较低，更适合高度近视患者使用。

METHODS: In this prospective control trail, axial length ≥28mm of high myopia with or without cataract patients in our hospiotal from May 2012 to February 2014 were selected. They were divided into two groups and were implanted with Bigbag IOL or Sensar IOL after phacoemulsification surgery. After 6mo, complications and the status of IOL posterior capsule were observed, the differences of distance between posterior capsule and retina before and after operation(Δd)were compared.

RESULTS:Sixty-three eyes of 52 cases were included. There were 30 eyes of 24 cases(female: 19 eyes of 15 cases; male: 11 eyes of 9 cases)in the Bigbag group and 33 eyes of 28 cases(female: 19 eyes of 16 cases; male: 14 eyes of 12 cases)in the Sensar group. The Δd was 1.49±0.06mm in the Bigbag group and 1.67±0.09mm in the Sensar group, with statistically significant difference(P<0.01). At 6mo postoperatively, posterior capsule striae(PCS)were found in 2 eyes(6.7%)of Bigbag group and 9 eyes(27.3%)of Sensar group, with statistically significant difference(P=0.031).

CONCLUSION:The stability of Bigbag IOL is better than Sensar wiht low incidence of PCS. The Bigbag IOL is more suitable for high myopia.