目的:探讨计划性囊口松解技术对白内障术后前囊口收缩以及视功能的影响。方法:选取本中心年龄相关性白内障患者30例42眼,行超声乳化白内障摘除+人工晶状体植入术或小切口手法白内障摘除+人工晶状体植入术,术中撕囊直径5.0mm。其中施行前囊口松解者22眼（n=22）,未松解者20眼（n=20）。术后3mo检查视力,裂隙灯下观察前囊形态、囊口直径、人工晶状体位置,并应用美国Stereo公司生产的OPTEC6500视功能分析仪分别测5种空间频率（1.5,3.0,6.0,12.0,18.0c/d）下的对比敏感度和眩光对比敏感度。结果:两组人工晶状体均无明显偏位,未松解组有2例前囊口明显机化并收缩。昼无眩光状态下,在1.5,12.0c/d空间频率下的两组之间CSF值差异有统计学意义（P＜0.05）,实验组优于对照组。昼有眩光状态下,在1.5,180c/d空间频率下的CSF值差异有统计学意义（P＜0.05）,实验组优于对照组。其余空间频率及夜间的两组CSF值差异均无统计学意义（P＞0.05）。结论:计划性囊口松解技术可以减轻前囊收缩的程度,更久地维持术后良好的视功能。

AIM:To explore the effect of planned capsule edge release in preventing anterior capsular contraction and contrast sensitivity function(CSF) after cataract surgery.METHODS:Forty-two eyes of thirty age-related cataract patients from July 2011 to September 2011 at our Center were treated with phacoemulsification and intraocular lens(IOL) implantation or manual nuclear fraction through small incision and IOL implantation. The capsulorhexis size was 5mm in diameter. The eyes were randomly divided into two groups:edge released group(n=20) and none edge released group(n=22). In addition, visual activity, the shape of anterior capsule, capsule hole in diameter and location of IOL were also observed in the current study. The CSF and glare sensitivity function(GFS) were measured with OPTEC 6500 under distance vision conditions (with spatial frequencies of 1.5, 3.0, 6.0, 12.0, 18.0c/d). Differences and characteristics among groups were compared and analyzed.RESULTS:In the day time without glare, there was a significant difference in CSF between edge released group and none edge released group at 1.5, 2.0c/d(all P<0.05) and edge released group higher than none edge released group. While in the day time with glare, a significant difference in CSF was also found between the two groups at 1.5, 18c/d(all P<0.05) and edge released group higher than none edge released group. There was no significant difference at all other spatial frequency between the two groups.CONCLUSION:Planned capsule edge release is found to be effective in limiting the degree of anterior capsular contraction, and maintaining the better CSF much longer.