PRK治疗近视术后角膜地形图分析  

Corneal topography after photorefractive keratectomy for correction of myopia

作　　者：生晖[1] 王传富[1] 卢奕[2] 

机构地区：[1]青岛大学医学院附属医院眼科,研究生现在200031 [2]复旦大学附属眼耳鼻喉科医院眼科

出　　处：《临床眼科杂志》2004年第4期309-311,i001,共4页Journal of Clinical Ophthalmology

摘　　要：目的　分析准分子激光屈光性角膜切削术 (photorefractive keratectom y,PRK )治疗近视术后角膜表面形态及偏中心切削。方法　 76例 (1 5 0只眼 )行 PRK,术前屈光度 (- 3.0 0～ - 1 0 .0 0 ) D,平均 (- 6 .0 8± 1 .2 1 ) D。术后 1、3、6、1 2个月行角膜地形图检查。结果　角膜地形图形态分为平滑型、半圆型、钥匙孔型、肾型、中央岛型和不规则型 6种。角膜地形图形态有逐渐变平滑的趋势。术后 3个月以后 ,各种类型所占比例基本稳定。平滑型术后裸眼视力较好。偏中心距离 >0 .5 0 m m时 ,术后视力恢复不良。结论　角膜地形图分析系统能精确测量、分析全角膜的前表面形态 ,观察术后效果、指导手术设计 ,从而提高 PRK治疗近视的准确性。Objective To analyze the corneal topography after photorefractive keratectomy(PRK) for correction of myopia.Methods A total of 76 patients(150 eyes) with preoperative refraction of -3.00D～-10.00D(-6.08±1.21D) were treated with PRK and followed up for 12 months.Corneal topography was examined 1,3,6,12 months postoperatively.Results Corneal topographic patterns were classified as uniform,semicircular,keyhole,kidney,central island and irregularity.3 months after PRK,corneal topographic patterns tended to be stable and more regular.Central island,irregularity patterns and decentration more than 0.50mm affected the postoperative uncorrected visual acuity greatly.Conclusions Computer assisted corneal topography system plays an important role in PRK

关 键 词：PRK治疗 近视 术后 角膜地形图 分析 准分子澈光屈光性角膜切削术 

分 类 号：R779.63[医药卫生—眼科]