摘要
目的：探讨准分子激光近视治疗术后屈光回退和欠矫的原因,为临床提供理论依据。方法：将我院近视中心准分子激光术后发生屈光回退并行二次手术的45例70眼,按<-6．00D为Ⅰ组,>-6．00D度为Ⅱ组,将两组患者两次治疗前后屈光度、术后不同时间的视力、术式、切削光斑直径、角膜切削量及残留厚度等相关资料进行了对比分析。结果：两组未手术时屈光度差别显著(P<0．05)。屈回退后两组屈光度差别无意义(9>0．05)。Ⅰ,Ⅱ两组首次激光术后6mo内,不同时间点裸眼视力与术前矫正视力有明显差别(P<0．05)。二次手术后,1wk内裸眼视力与矫正视力差别明显(P<0．05),1-3mo无差别(P>0．05)；Ⅰ组于6mo时裸眼视力与矫正视力出现差别(P<0．05),Ⅱ组差别不显著(P>0．05)：两组激光切削光斑的直径及角膜切削量有明显差别(P<0．05)。结论：准分子激光近视治疗术后,屈光度回退程度与术前屈光状态无关。不同屈光度屈光回退程度相同。高度近视、LASIK多区切削和切削光斑直径小是发生屈光回退和欠矫的主要原因。
AIM： To analyze the causes of regression after excimer laser photorefractive keratectomy （PRK） and laser in situ keratomileusis （LASIK）.
METHODS： Forty cases （70 eyes） were retreated for the regression after PRK and LASIK. They were divided into 2 groups by their myopia diopter. The data on the patients and the operation at the first and second surgeries were recorded and compared statistically.
RESULTS： The naked eye＇s visual acuities in the 2 groups were not significantly different after myopia regression （P〉0.05）. There were differences in the primary diopters and the ablation bed＇s sizes at the first treatment （P〈0.01）.
CONCLUSION： There is no relationship between the regression diopter and original myopia diopier. The main causes may be high myopia, LASIK＇ s multi-beds ablation and size of ablation.
出处
《国际眼科杂志》
CAS
2005年第6期1198-1200,共3页
International Eye Science
关键词
准分子激光
近视
屈光回退
laser surgery
myopia
myopia diopter with regression
