ICL植入术对高度近视眼对比敏感度影响的研究

Change of contrast sensitivity after implantation of implantable contact lens in high myopia

目的:研究有晶状体眼后房型人工晶状体(ICL)植入术对高度近视眼对比敏感度的影响。方法:选择行ICL植入术的高度近视眼患者27例52眼,用对比敏感度测试仪分别测试术前及术后1wk最佳矫正视力下的对比敏感度值。测试分为明视、明视眩光、暗视、暗视眩光四种模式,每种模式测试1.5,3,6,12,18c/deg五个空间频率。结果采用配对t检验进行统计学分析,以P<0.05表示差异有统计学意义。结果:ICL植入术后1wk裸眼视力4.8558±0.6960,术后1mo裸眼视力4.9519±0.1513,术后3mo裸眼视力4.8865±0.5929。术后1wk;1,3mo裸眼视力较术前裸眼视力均明显提高(P<0.05)。术后明视、暗视、明视眩光、暗视眩光四种模式下空间频率为1.5,3,6,12,18c/deg对比敏感度值较术前均有明显提高(P<0.05)。结论:高度近视眼植入ICL后对比敏感度较术前明显提高,视功能得到显著改善。

AIM：To compare changes in visual contrast sensitivity after implantable contact lens（ICL） implantation of posterior chamber phakic intraocular lens in high myopia eyes.METHODS：Contrast sensitivity function and visual acuity were evaluated in 52 eyes of 27 high myopia patients undergoing ICL implantation.We tested the contrast sensitivity pre-operation and 1 week after operation with best spectacle visual correction.The test included 4 modes which were day and night,with and without glare and 5 space frequents were 1.5c/deg,3c/deg,6c/deg,12c/deg,18 c/deg.RESULTS：The mean value of uncorrected visual acuity after ICL implantation was 4.8558±0.6960（ranged from 4.5 to 5.1）.The postoperative contrast sensitivity values were found significantly higher（P0.05） than those of the preoperative eyes.One week,1 month,3 months postoperatively,the uncorrected visual acuity was significantly improved（P0.05）.CONCLUSION：ICL implantation improves the contrast sensitivity and visual function of the high myopia eyes.