准分子激光屈光性角膜切削术治疗高度近视探讨  

Excimer laser photorefractive keratectomy in the treatment of severe myopia

作　　者：杜之渝[1] 周希媛[1] 张大勇[1] 郭红[1] 李祥平[1] 

机构地区：[1]重庆医科大学第二附属医院眼科中心,400010

出　　处：《眼科研究》2001年第2期150-151,共2页Chinese Ophthalmic Research

摘　　要：目的探讨准分子激光角膜切削术（ＰＲＫ）治疗高度近视的效果。方法应用ＶＩＳＸ２０／２０Ｂ型准分子激光仪，采用多光区切削法治疗－１５ Ｄ以上超高度近视。术后随访 １９～３８月，并对结果进行分析。结果术前最佳矫正视力 ０．６９ ±０． １９，术后裸眼视力 ０．６１ ±０． １１。术后 ３月左右角膜上皮下混浊（ｈａｚｅ）明显，１年后最轻，该组 ｈａｚｅ平均（０．５３±０．１７）级，屈光度回退平均（３．１５ ±１．５６）Ｄ。结论对于角膜较薄，不适于准分子激光原位角膜磨削术（ＬＡＳＩＫ）的超高度近视患者，ＰＲＫ的多光区切削方式仍不失为一种安全、有效且稳定性较好的方法。ObjectiveTo investigate the therapeutic efficacy of excimer laser photorefractive keratectomy for the correction of severe myopia.MethodsAutomatic multizone ablation technique with Visx 20/20B excimer laser were used to treat severe myopia(>-15D).The therapeutic efficacy was investigated during 19～38 months of follow-up.ResultsPreoperatively best corrected visual acuity was 0.69±0.19 and postoperatively uncorrected visual acuity was 0.61±0.11.The corneal haze was observed to be severe at postoperative three month and diminished considerably at one year.Haze of this group averages 0.35±0.17 level.Diopter regression averages 3.15±1.56 D.ConclusionExcimer laser PRK automatec multizone ablation technique is an effective,safe and stable method for the severe myopia cases that corneal is thinner and not suitable for LASIK.

关 键 词：准分子激光屈光性角膜切削术 超高度近视 PRK 

分 类 号：R779.6[医药卫生—眼科]