Clinical observation of iris location combined wavefront guided LASEK in myopia

Abstract

Objective To evaluate the clinical effects with iris location combined wave-fiont guided laser-assised subepithelial keratomileusis(LASEK)in the treatment of myopia.Methods Iris location combined wave-front aberration guided LASEK was performed in 39 patients(78 eyes)as experimental group,and traditional LASEK was performed in 41 patients(82 eyes)as control group.The therapeutic effects were compared between two groups.Results At 6 months postoperatively,the naked vision of all patients in two groups surpassed the preoperative best corrected visual acuity of each group.The poswperative naked vision of 29 eyes(37.18%)in experimental group and 16 eyes(19.51%)in control group were higher at least one line than the preoperative best corrected visual acuity.The experimental group was obviously better than control group(P ＜0.01).The remainder astigmatism postoperatively of 31 eyes(39.74%)in experimental group and 17 eyes(20.73%)in control group were within ± 0.5D.The experimental group was obviously better than control group(P＜0.01).The root mean square of higher order aberration value were(0.537± 0.31)μ m in experimental group and(0.715± 0.43)μ m in control group.The root mean square of higher order aberration value in experimental group was less than that in control group at 6 months postoperatively(P ＜0.05).Total higher order aberration value of experimental group added 21.60% and control group added 38.88%.The increase of total higher order aberration in experimental group was less than that in control group(P ＜0.01).There were 76 eyes (97.44%)in experimental group and 74 eyes(90.24%)in control group feeling comfortable with visual quality at 6 months postoperatively(P ＜0.05).Conclusion Good therapeutic effects can be achieved in iris location combined wave-front aberration guided LASEK in the treatment of myopia. Key words: iris location; wave-front aberration; laser subepithelial keratomileusis; myopia