【摘要】 目的探讨准分子激光上皮下角膜磨镶术(lasersubepithelial keratomileusis,LASEK)治疗准分子激光原位角膜磨镶术(excimer laser in situ keratomileusis,LASIK)后再近视的疗效及安全性。方法对21例(36眼)LASIK后再近视患者施行LASEK。LASEK术前的平均屈光度为(-1.98±0.65)D,平均角膜瓣下剩余基质厚度为(256±18.46)μm,LASEK平均切削深度为(36.58±11.24)μm。结果术后第6个月时裸眼视力为1.0以上者22眼(占61.1%),0.8以上者31眼(占86.1%),0.5以上者36眼(占100%),平均屈光度为(-0.18±0.53)D,未见最佳矫正视力下降,术后裸眼视力较术前明显提高,差异有显著性(P<0.05)。角膜瓣haze 0级者29眼(占80.6%),0.5级者5眼(占13.9%),1级者2眼(占5.6%)。结论LASEK治疗LASIK后再近视安全有效,但更长期的效果有待继续随访。更多还原

【Abstract】 Objective To explore the effectiveness and safety of laser subepthelial keratomileusis(LASEK) for correction of residual myopia after excimer laser in situ keratomileusis(LASIK).Methods 36 eyes of 21 patients were treated with LASEK for residual myopia after LASIK.Mean preoperative spherical equivalent(SE) was(-1.98±0.65)D,mean stromal thickness was(256.17±18.46)μm;mean corneal ablation depth was(36.58±11.24)μm.Results At 6 months postoperatively,the uncorrected visual acuity(UCVA) was more than 1.0 in 22 eyes(61.1%),more than 0.8 in 31 eyes(86.1%),more than 0.5 in 36 eyes(100%).Mean SE refraction was(-0.18±0.53)D.There were no cases that had a reduced value for best corrected visual acuity.Postoperative uncorrected visual acuity improved significantly(P<0.05) in comparison to preoperative eyes. Corneal haze was at 0 grade in 29 eyes(80.6%),0.5 grade in 5 eyes(13.9%),and 1 grade in 2 eyes(5.6%).Conclusion LASEK is an effective and safe treatment for correction of residual myopia after LASIK.A long follow-up period is currently in progress.更多还原