摘要
目的观察透气性硬性角膜接触镜（RGPCL）矫正亚临床型圆锥角膜的效果以及长期配戴后角膜地形图的改变。方法对22例一眼经Orbscan Ⅱ眼前节系统检查已确诊为圆锥角膜；另一眼角膜地形同够示角膜厚度≤500μm或后表面Diff值≥0．05mm的亚临床型阋锥角膜，根据屈光度、角膜曲率和配适情况，选择适合的镜片。于戴镜后每年行Orbscan Ⅱ检查，随访两年。观察角膜前表面曲率、角膜前表面及后表面Diff值、I-S值、角膜后表面屈光度、角膜厚度、前房深度的变化。结果总体平均近视度和散光度分别为（-5．13±2．61）D和（-1．15±0．81）D。框架眼镜矫正视力≥1．0者为16例，占总数的72．7％；戴刚RGPCL后矫正视力≥1．0者为100％。配戴RGPCI。的矫正效果明显优于框架，视力差异具有统计学意义（P〈0．05）。角膜地形图各项值统计结果冠示．角膜前表面曲率半径平均值大于配戴前，I—S值降低，差异具有统计学意义（P〈0．05）。角膜前表面及后表面Diff值、角膜后表面屈光度、角膜厚度、前房深度前后变化无统计学意义（P〉0．05）。结论RGPCI。的合适配戴能在一定程度上控制亚临床型圆锥角膜的进展。
Objective To evaluation the clinical effectiveness of rigid gas permeable contact lenses （RGPCL） for subclinical keratoconus eyes. Methods Twenty-two subclinical stage ofkeratoconus eyes from 22 patients were treated by wearing of RGPCL and followed up for 1-24 months. Orbscan corneal topography system was used before and after the wearing of RGPCL. Results RGPCL can provide a significant improvement in visual acuity compared to spectacle correction for patients （P 〈0.05）. Anterior corneal surface became flatter and I-S value became smaller after the fitting ofRGPCL （P 〈0.05）. But anterior corneal surface curvature, posterior and anterior corneal surface height, corneal thickness, anterior chamber depth had no significant changes （P 〉0.05）. Conclusions It is easy to reach the ideal fit and to improve the visual acuity. The RGPCL has effective orthokeratology for subclinical keratoconus.
出处
《中国实用眼科杂志》
CSCD
北大核心
2010年第9期995-997,共3页
Chinese Journal of Practical Ophthalmology
关键词
透气性硬性角膜接触镜(RGPCL)
酮锥角膜
Keratoconus
Rigid gas permeable contact lenses （RGPCL）
Orbscan corneal topography system
