角膜屈光手术后继发性圆锥角膜的RGP矫正疗效观察

目的评价硬性透气性角膜接触镜(rigid permeability contact lenses,RGP)矫正角膜屈光手术后圆锥角膜的疗效。方法选择笔者医院收治的11例(21眼)角膜屈光手术后圆锥角膜患者配戴RGP,观察1年后角膜前后表明曲率,RGP和普通软性角膜接触镜的角膜地形图改变。结果配戴RGP1年后角膜前表面最平平均曲率值和后表面曲率值没有明显变化。RGP矫正1年后角膜前表面的最陡平均曲率明显下降,角膜地形图SRI,SAI,散光减少,PVA提高。对照组佩戴普通软性角膜接触镜1年后角膜地形图无明显改善。结论经1年的随访观察,RGP对角膜屈光手术后的圆锥角膜能明显改善患者的角膜前表面最陡平均曲率,角膜后表面和角膜前表面最平平均曲率保持稳定。是目前矫正角膜屈光手术后圆锥角膜的有效方法。

RGP Correct Corneal Ectasia after Corneal Refractive Surgery

Objective To evaluate the effect of rigid permeability contact lenses(RGP) for correcting corneal ectasia after corneal refractive surgery.Methods 21 eyes from 11patients identified as developing corneal ectasia after corneal refractive surgery were used in this study.The change of corneal curvature front surface and after the surface was observed.Also the change of corneal topography of after wearing RGP and soft contact lens after 1 year was observed.Results Front surface MIX corneal curvature value and after surface corneal curvature value did not change significantly.Front surface MAX corneal curvature was decreased significantly after wearing RGP 1 year.SRI,SAI and stigmatism were obviously decreased,and PVA was improved after wearing RGP 1 year.At the same time corneal topography did not change significantly after wearing soft contact lens 1 year.Conclusion By 1 years of follow-up,front surface MAX corneal curvature,stigmatism are obviously decreased after corneal refractive surgery.The patient′s vision is obviously improved.Front surface MIX corneal curvature value and after surface corneal curvature value remain stable after wearing RGP 1 year.The RGP is effective to correct the corneal ectasia after corneal refractive surgery.