摘要
本研究共１５人（２３眼）于准分子激光角膜切削术后因欠矫而实施二次切削。术前平均屈光度为－９．８６Ｄ（－５．００—－２０．００Ｄ），其中２眼为中度近视（－３．２５—－６．００Ｄ），６眼为高度近视（－６．２５—－９．００Ｄ），１５眼为超高度近视（≥－９．２５Ｄ）。准分子激光二次切削采用治疗性角膜切削术（ＰＴＫ）和光学性角膜切削术（ＰＲＫ）相结合的方法。术后６个月随访结果表明：９１％的裸眼视力≥０．５，７０％的裸眼视力≥１．０，７０％的屈光度在±１．００Ｄ，角膜无明显混浊。由此证明：准分子激光二次切削治疗近视性角膜切削术后欠矫及角膜混浊是有效的。
Fiveteen patients(23 eyes) treated by photorefractive keratectomy (PRK) for myopia required retreatment because of underc orrected.The mean preoperative refraction of these eyes had -9 86D (range -5 00 to -20 00D).No eyes before photorefractive keratectomy had low myopia,two eyes had myopia between -3 25 and -6 00D,six eyes had myopia between -6 25 and -9 00D,15 eyes had more than -9 00D of myopia.The retreatment were performed using a dual ablation technique utilizing a phototherapeutic keratectomy followed by a photorefractive keratectomy.At the 6 month after retreatment,percentages of uncorrected visual acuity ≥0 5 and ≥1 0 were 91% and 70%,percentages of ±1 00D were 70%,and corneal hazes were few.To date,retreatment is an safe and effective procedure for manifest scars and regression.
出处
《中国实用眼科杂志》
CSCD
1997年第3期149-151,共3页
Chinese Journal of Practical Ophthalmology
关键词
近视
角膜切开术
二次切削
欠矫
Myopia Corneal refractive surgery Excimer laser PRK Retreatment
