RK后的LASIK增进手术

LASIK enhancements after radial keratotomy

目的 :展示放射状角膜切开术 (Radial Keratotomy,RK)行准分子激光角膜原位磨镶 (L aser in situ keratomileusis,L ASIK)增进手术的结果。方法 :10例患者 (16眼 )于 RK手术后行 L ASIK纠正残留的近视和远视。 L ASIK术前的平均屈光度为 - 3.14± 3.0 4D (- 6 .6 75 D～± 6 D) ,最佳纠正视力为 2 0 / 2 0者有 9眼 ,2 0 / 2 5者有 6眼 ,2 0 / 30者有 1眼。裸眼视力只有 2眼好于 2 0 / 40。患者术后平均随访时间为 7.5 3个月 (1个月～ 17个月 )。结果 :所有病例均接受了一次增进手术 ,术后最后一次随访的平均屈光度为 +0 .16± 0 .6 8D (- 1.0 0 D～ +1.75 D) ,所有病例无视力下降。裸眼视力为 2 0 / 2 0者有 9眼 ,2 0 / 2 5者有 6眼 ,2 0 /30者有 1眼。有一例患者双眼在术中发生以前的 RK切口裂开。结论 :L ASIK对于 RK术后残留的近视和远视是非常有效的 。

Purpose:To present the results of LASIK enhancements after RK.Methods:16 eyes of 10 patients were treated wih LASIK for the residual myopia and hyperopia after RK,mean preoperative Spherical Equivalent(SE)was -3 14±3 04D(-6 675D to +6D). The Best Corrected Visual Acuity(BCVA)was 20/20 in 9 eyes,20/25 in 6 eyes,20/30 in 1 eye.The Uncorrected Visual Acuity(UCVA)was 20/40 or better only in 2 eyes.Patients were followed at one day,one week,one month,three months,six months,and one year.The mean follow up period is 7 35 months(1 month to 17 months).Results:All eyes received one enhancement.Mean final SE refraction was +0 16±0 68D(-1 00D to+1 75D).There were no cases of visual loss.The UCVA is 20 /20 in 9 eyes,20/25 in 6 eyes,20/30 in 1 eye.Two eyes of one patient had the previous RK incisions open up.Conclusion:LASIK is an effective treatment for correction of the residual myopia and hyperopia after RK.A long follow up period is in process for continuing evaluation.