PRK治疗复性近视散光效果分析

PRK correction for compound myopic astigmatism

目的 :探讨PRK治疗复性近视散光的临床疗效。方法 :按术前欲矫正球镜屈光度将 88眼分为A(≤ - 6D ,6 2眼 )、B(≥ - 6 .2 5D ,2 6眼 )两组 ,回顾性分析随访 1年后的残留球镜度、散光度和非矫正视力情况。结果 :术后B组球镜度仍高于A组 (- 0 .83D和 - 0 .44D ,P =0 .0 0 0 5 )。两组除术后 3个月时 ,手术前后散光度均无明显差别 (P >0 .0 5 )。两组间非矫正视力在整个随访期间差别均有非常显著性意义 (P <0 .0 1)。结论 :由于对高度近视矫正得不够彻底 ,PRK仅对球镜度低于 -

Objective:To evaluate the clinical effect of photorefractive keratectomy (PRK) for correction of compound myopic astigmatism.Methods:88 eyes were subdivided into A (≤-6D) and B (≥-6D) groups according to preoperative spherical myopic refractive error. Residual myopia, astigmatism and uncorrected visual acuity (UCVA) were analyzed postoperatively.Results:Spherical myopia in group A (-0.44D) was lower than that in group B (-0.83D,P=0.0005) after PRK. Except for 3 months after PRK, while there was no statistical difference in astigmatism between the two groups. During a one year follow up period, the UCVA in group A was consistently better than that in group B.Conclusion:PRK has proven to be an effective procedure for correction of compound myopic astigmatism the preoperative spherical refractive error is less than -6D, because of the incompletely correction of the spherical refractive error in ablation for high myopia. [FK(WB80011?6]