摘要
目的为评价准分子激光角膜切削术矫正近视的结果。方法应用SVSAPEX型准分子激光治疗仪对150例(260只眼)近视患者进行准分子激光角膜切削术,并对随诊的患者进行观察。分别于术后10d,1、2、3、6、12月就视力、屈光度、眼压、角膜透明度、角膜地形图进行随访评估。150例(260只眼)近视患者术前等值球镜屈光度为-125~-1000D(-467±163D),散光0~200D(-033±045D);按屈光度分为两组:A组(-125~-590D),B组(-600~-1000D)。结果A组术后第10d,有689%裸眼视力达到矫正视力,1月、3月、6月和12月分别为90%、96%、95%和94%。B组术后第10d,有359%裸眼视力达到矫正视力,1月、3月、6月和12月分别为83%、87%、86%和84%。1a时,裸眼视力≥05、08、10者,在全组分别为993%、956%、913%;在A组分别为100%、988%、947%;在B组分别为955%、902%、685%。其中,术后全组最佳矫正视力下降1行或2行者分别为66%和0%。全组仅3只眼(064%)除外,均为?
Objective To evaluate the efficacy and accurcy of photorefractive keratectomy(PRK) for myopia and myopic astigmatism.Methods SVS APEX excimer laser with a wave length of 193nm (Summit Technology Inc.Waltham,Mass,USA) was applied.316 myopic eyes of 168 patients were treated with PRK between September 1996 and October 1997,and 260 eyes(84%) of 150 patients were followed for more than three months,including 68 males(116 eyes,40 1%) and 82 females(144 eyes,59 9%).The preoperative splerical equivalent refractive errors ranged from -1 25D to -10 00D(mean,-4 67±1 63D),and astigmatism ranged from 0 to -2 00D(mean,-0 33±0 45D).The patients age ranged from 18 to 50 years(average,27 years).We divided the patients into two groups according to the refraction;group A(from -1 25D to -5 90D) and group B(from -6 00D to -10 00D).The number of eyes in the two group were 220 and 40,respectively.Most of the haze showed 0 5-1 grades except 3 eyes with the haze of 2 grade at 3 or 6 months and it changed to 1 and 0 5 grade respectively at one year.Result On the 10th days and 1,3,6,12 months postoperatively,the corneal haze was noted in 32 9%,84 8%,62 8%,9 0% and 2 8% of the treated eyes respectively.In group A,on the 10th days,36 7% has the VCUA equal to or one line better of lower than the preoperative BCVA.At 1 and 3 months,94% and 99% had the UCVA equal to or one line better or lower than the preoperative BCVA,respectively.In group B,on the tenth days,at 1 month and 3 months,UCVA equal to or one line better or lower than the preoperative BCVA occurred in 47 1%,68% and 86% of the patients respectively.Conclusion We found that 193nm excimer laser PRK was a predictable,safe,stable,and effective refractive surgery for correcting myopia up to -10 00D in Chinese patients,and the effect was better in myopia lower than -6 00.
出处
《济宁医学院学报》
1998年第4期9-13,共5页
Journal of Jining Medical University
基金
陕西省卫生厅资助
关键词
近视
散光
PRK
治疗
Excimer laser photorefractive keratectomy
Myopia
Myopic astigmatism